SCIENTIFIC ABSTRACT REBINDER, P.A. - REBINDER, P.A.

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SCIENTIFIC ABSTRACT
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'D a~TTHOR SEGYALOVA E.E,, SOLOVYEV417E.S. and RERBINDER P,A., PA-2,920 Member of Academy. TITLE Development of crystallization structures in tricalcium alumi-riate suspensions. (Kristallizatsionnoye strukturoobrazovaniye r suspenziyakh trokhkalltsieyogo aluminata.- Russian) PERIODICAL Doklady Akademii Nauk SSSR 1957, yo~ 113, Nr 1. PP 134-137 V.S.S.R.) Received: 6/1957 ReTiewed-- 7/1957 ABSTRACT The peculiarities of the processes of structure formation in water suspensions of Portland cement are determined generally in the first stages after their production by aluminate minerals, esepeclAaly by tricalciumaluminate. The study of these processes becomes particularly interesting by the circumstance that just in this stage the system wat;-r - cement can be easily influenced in such a way as to regulate the structure of the cement stone. In the case of a mixture of 1 - 5 % tricalciumaluminate and 99 - 95 % quartz sand, only the former substance is responsible for the formation of the structure, The great amount of inert filling substance facilitates the study and a:)proaches the hydration conditions of C2R to those of the cement dough. The authors characterized CARD 1/4 x-~'asob the Of studi-,d PA - 2920 Development of crystallization structures in tricalcium aluminate suspensions. influence of the wash- admixture in suspensions of tricalcium- aluminate. On the one handq this admixture slows down the structu- re formation and the hydration as well as the crystallization of the new forms, on the other it causes an adsorption peptiza- tion and a dispersion of the initial particles Of the C3A. By this these processes are accelerated. Furthermore, the wash blocks off the points of possible contact and loosens the strength of the crystal structure. The total influence of thewash depends on the predominance on one of these two factors, in the case of one or the other concentration. Hydration slows down and dispersion increases with growing concentration of the wash. No water is bound during an induction period. Not before this period is terminated does an intensiye hydration commence. In connection with this process plastic strength increases and leads to the formation of hydroaluminate. In the case of large admixtures of wash strength may increase to 8-10 times its original value. On +his occasion the hydroaluminate crystals CARD 3/4 PA - 2920 'Development of crystallization structures in tricalcium aluminate suspension, become so small that they cannot be distinguished in the electron microscope with a magnification of 40.000. The highest degree of adsorption of wash amounts to 4,5 g per 1 Cram of C A. In the case of a further increase of the amount of wash tK strength of the crystal structure of the hydro- ilit.utinate again decreases. (With 2 illustrations, 1 table with 6 micro photographs and 1 table) ASSOCIATION: DeDartment of Colloidal Chemistry of Moscow State University 11M.V. Lomonosow". (Kafedra. kolloidnoy khimi i Mosko-rskogo gosudarstvenoho Universiteta im, M.V. Lomonosoya) PRESENTED BY: - SUBMITTED: 27-9. 1956. AVAILABLE: Library of Congress. CARD 4/4 AUTHOR TsETLIN, B.L., YaTTOVA, L.P., SIBIP01CM, G.K., REBIFD~'.R,P.jt,, idember of the kc;ademy. TITLE '~_heproperties of plasti-a masses filled with graphite and the effect produced by high filling. (Svoystya napolnennykh grafiton-, pla3tmass i efffekt Ty-- okogo napo2meniyn - Russian) PERIODICAL Doklady akademii nauk SSSR. 195Ti Yol 114, Fr lo PP 146~148 (U.S.S.R.) ABSTRACT The properties of various materials cp_q, as is known,, be considerably improved by the introducticn- of aoti-va fil'~Tz In the present case the effect produr3ed by graphite as an acti-re filler was investigated in connection with a number of systems. The mechanic strengt1h, heat cenductivity, al~_ heat storage were investigated. The rest,'Jts obtaIned arra shown by two drawings. Also the ccu_rse of the ~_hor_fng the heat-storing capacity is underat~anda*bla.. whJch that at high temperatures the stri-agtharxing -,a mc_-rs pronounced. Technological researo"n. worlk. carried out on tlaa )f this paper proved '~-he iorractnass of the re-si:.1-;,s by the in-restigations. (wizh 2 draw *:.z-,.gs, _Tmvr~ 20-114- 3- 39/60 AUT11ORSs Segalova, Ye. Ye., Izmaylova, V. N., Rebinder, P. A., Member of the All USSR TITPLE: Investigation of Supersaturation Kinetics in Connection With the Development of Crystallization Structures in 'the Solidi- fication of Gypsum (Issledovaniye kinetiki peresyshcheniya v svyazi s razvitiyem kristallizatsionnykh struktur pri tver- denii Cipsa) FERIODICALs Dolklady Akademii Nauk SSSR,1957,vol 114,1-fr 3,PP 594-597(USSR) ABSTRACTs In the dispersion systems, two types of structures can be form ds coRGulation striictures and crystallization structures. 1, mechanical destruction of the crystallization structure dL.rin--- the procs-ss of its fo=ation is irreversible even if hydration still is far from beinF completed. In this context, the continuous hydration and the connected crystallization cf the dihydrate do not lead to the formation of a crystallization structure. This can only be explained by the circumstance that in this case the favorable conditions for the formation of the crystallization contacts between the different micro- Card 1/4 crystals of the dihydrate gypsum are lacking. This, in turn, 20-114-3-39/60 Investigation of Supersaturation Kinetics in Connection With the Development of Crystallization Structures in the Solidification of Gypsum 13 probably caused by the excessive amount of dihyrate accumu- lated in the suspension. '_'hu value cf oversaturation and the kinetics of its change can be observed conductiometrice]-l'y 1111 the suspension of the semihydrate ~:ypsii._ in all of 'the seiqihydrate gypsum, made of over 8 6 CaSO /1 liter, the same maximum oversaturation is observed, coiresponding to the CaSO concentration of 8.0 g1l in the liquid phase of suspensign. This again corresponds to the value nbich con- ventionally is assumed as 'solubility' of the semihydrate. The maximum oversaturation remains constant as long as the supply velocity of the ions Ca ++ and 30 into the solution compensates the loss velocity of the sage ions as a result of the crystallization of the dihydrate. It can be seem from fligure Nr 1,as contained in the paper under review, that the higher the concentration of the suspension the sooner the re- duction in the oversaturation be-ins and the more quickly it is reduced. The decrease in the hicrhest solidity oil the cry- stalli%ation structure of gypsum, as observed in the experi- ments conducted b.Y the authors of the paper under review, can be explained b:t the reduction in the maximum level of the Card 2/4 oversaturation, which is attained in the presence of the di- 2-0 -114 - 3 - 3') /6 C Investigation of Supersaturation Kinetics in Connection With the Development of Crystallization Structures in the Solidification of Gypsum hydrate additions. The latter reduction (of only short dura- tion) decreases the probability of the growing together of the microcrystals, i.e. the formation of crystallization con- tacts. If the concentration of the dihydrate in the sWen- sion is high, only small oversaturations take place, lasting only a short while, Under these circumstances virtually no crystallization contacts ard formed and thus no solidifica- tion structure is created. It is exactly this circumstance which, at a sufficient amount of the new formation accumu- lated in the suspension - of the dihydrate -., prevents furth- er hydration solidifcation after the not yet fully formed crystallization structure has been destroyed. From this point of view it becomes clear that in suspensions of a highly dis- persing dihydrate gypsum, proposed '%r some authors a3 a bind- ing material with particular properties, the crystallization solidification is impossible under normal circumstances. The solidity in such systems - if density is sufficiently high - Card 3/4 as well as in the case of clays/is caused by the dehydration V, k AUTHORS kbrosenkoya,V.P.,Logginov,G.I.,i"IAWBNL -,P.A-'~ - 20-3.4159 Member of the Academy ------ TITLE Binding of Lime Into Calcium Hydrosilicate Under Normal Conditioas. (Syyazyyaniye izvesti v gidrosilikat kalltsiya pri normallnykh ualoyiyakh - Russian) PERIODICAL Doklaky Akademii Nauk SSSR,195T,Vol 115,Nr 3,PP 509-511(u.S.S.P.) ABSTRACT It is usually said that the formation of calcium hydrosilicate on the occasion of the interaction between limestone with silica in the water medium by hardening of the binding calcareous-sili- cious building materials can only take place by hydrothermal treatment in autoclaves at temperatures of an order of magnitude of 1700.kt normal temperatures this process is assumed not to ta- ke place i.e.it is not expressed in a noticeable increase of strength of the formedprpduotion. Some building productione,ae e.g. wall blocks,which are used more and more in low buildings, do not need the strength obtainable in autoolaves. On the other hand,the papers of the authors confirm the assumption that,be- sides a hydration hardening of the calcareous-arenaceous binding Bubstance,the binding of the calcium hydroxide gradually develop* in the surface strata of the sand grains.The better this surface was developed and the more it was activated in the common break- ing process,the greater is the quantity of limestone bound into calcium hydrosilicate.By means of the radioactive isotope Ca45 Card 1/2 (as Ca45(OH)2) it was determined that the bound quantity of cal- 20-.2-18146 AUTHORS: Veyler, S. Ya. Likhtman, V. I. , Rebinder, P. A., Academician TIME: Adsorption Plastification of a Surface Layer Under the Influence of Lubricants at the Pressure Workin- of Metals (Adsorbtsio-rinoye plaotifitsirovaniye poverkhno3tnogo sloya pod vllyaniyez smagok Pri obrabotke metallov davleniyem) PERIODICAL: Doklady All SSSR, 1957, Vol. 116, Nr 3, PP. 415 - 413 (USSR) ABSTRACT: The authors illustrated the following: The essential part of the effect of liquid active lubricants at pressure working of metals is not the exterior friction but the resistance of the treated metals against the flow in a quite thin surface layer. This re- sistance determines the intensity of the tangential stress which occurs in the surface layer of the deformed metals. The liquid active lubricants reduce strongly the additional shearing deforma- tion of the surface layer of thettreated metal. The strong reduc- tion of the "effective" friction coefficient (of the tangential stress) is caused by the localisation of the plastic friction in a thin layer of the softer coverin- metal. Stronger thinner cover- a.-es (nitration, carburization, chromium plating) impair upon the d.rawing process by intensification of the tan,-,ential stress. The Carr, 1/3 shearing resistance T 1 of the layer as computed by the measurements 7"t rs dGes not depand on tll-,,~ 1 n-,- Ok t r-. r. e%,cL 3a i In 0 L I V e M e ti s I e f t'e c t e -1 ln3rea-;-, of an TI-2 surface-active r -,s- r cr e t h,2 deform tior. de, ee. t e for aluminum b,-,.n,is d:---.-vr. out in t-"he.~e clata sliow clearl,- +.i.lt. ~Ihe -.f f d Dti b ri c a n t s. u pon th, 1. pJ ir, a., ve ~'iin -,!u--face layer of the tre----t,7d met-il if, rp,hzc--,!. e no:3s of thu -3tit c. zlr, :L I- I -,I C. r. -', _rO 5; in,~I~z:?nce rj' t'nin r.,overa~- -~l t aare A j r-. - r ~2 V- c h L; rl rawn en--mnle r,f a cn n i-- the f-,Isorption T i Is t ~n n C-. -e axl~ent tj r 'v emuera'-ure~3 2n,~r :-.2 i n r n c t~ F, 20-3-18/46 Adsorption Plastification of a Surface Layer Under the Influence o:6 LubricantE at the Pressure Working of Metals ASSOCIATION: Institute for Physical Chemistry of the AN USSR (Institut fizicheskoy khimii Akademii nauk SSSR) SUBMITTEDs June 29, 1957 AVAILABLE: Library of Congress x Card 31, AUTHORS: Rozhanskiy, V. N., Pertsov, N.V., 20-5-14/48 Shchukin, Ye. D., Rebinder, P. A, Academician TITLE: --Effect of Thin Mercury Coatings on the Strength of Metallic Monocrystals (Vliyaniye tonkikh rtutnykh pokryti.T na prochnost' metallicheskikh monokri3tallov). PERIODICAL: Doklady AN SSSR, 1957, Vol. 116, Nr 5, PP. 769-771 (USSR) ABSTRACT: At first the authors shortly report on respective literature. In the present works the monocrystals. of zinc, tin, cadmium and lead (degree of purity 99.99 %6, diameter 0.5 mm, length about 10 mm) were investigated. As surface-active substance served mercury'which was applied in form of a thin coating by means of immerging the sample into an Hg2(NO3)2-solution. The mercury covered the monocrystal with an equal film of about 0.1 g thickness and was rapidly saturated with the metal to be investigated. The investi- gation of the strength properties of the amalgamated mono- crystals in their expansion with constant velocity showed that the strength of the zinc- and tin- monocrystals Card 1/3 covered with mercury was a few times less than the strength Effect of Thin Mercury Coatings on the Strength of 20-5--14/1,8 Metallic Monocrystals. of the non-amalgamated monocrystals. Such an abrupt decrease of strength is obviously connected with the important decrease of surface tension at the metal/Mercury boundary as well as with the decrease of the production operation of a new surface at the crack. The investigation of axial ground sections of amalgamated zinc-monocrystals according to their deformation showed the following-- The cracks can develop on the surface as well as in the interior of the monocrystal, which can be seen in observing the axial ground sections. The development, of the cracks in the inner parts can be connected with a noticeable diffusion of mercury into zinc (atroom temperature) with subsequent decrease of the surface tension on the developing inner separation surfaces. The rise of temperature up to 1600 C annihilates the above-mentioned phenomena of catastrophic brittleness with the zinc-monocrystals investigated and reconstitutes completely the plasticity and the strength. Also the decrease of the deformation velocity causes phenomena which are similar to those developing with the rise of Card 2/3 temperature. The strength of the body decreases with the Effect of Thin Mercury Coatings on the Strength 20-5-14A8 of Metallic Monocrystals. decrease of the surface tension on the just produced crack surface, but it increases with the creation of conditions which prevent the accumulation of great dislocation. avalanches near the possible potential barriers. There are 4 figures, and 11 references, 6 of which are Slavic. ASSOCIATION: Chair for Colloidal Chemistry of the Moscow State University imeni M. V. Lomonosov (Kafedra. kolloidnoy khimii Moskovskogo gosudarstvennogo universiteta im. M. V. Lomonosova). SUBMITTED: July 10, 1957. AVAILABLE: Library of Congress Card 3/3 AUTHORS: Segalova, Is. Ye.x Solov'yeva, Ye. S., 20-117-5-32/54 Rebinder- P_ A., Member of the Acadeny. TITLE: A Determinatiom of the Supersaturatiom Value of Tricalcium Aluminate Suspeitsiorm in Water Medium, and the Kinetics of its Variation (Onre- deleniy* velichiny peresyshchaniya . v vodnoy, srede suspens4- trekhkall- tsiyevogo alyuminata i kinstiki yoya izmeneniya). PERIODICW. Doklady-AN SSSR, 1957Y Vol. 117, Nr 5, PP. 8"44 (usn)- ABSTFXT: No systematical investigations exist up to now of the value of supern saturation and of the kinetics of its variation. The purpose of the present paper is such an investigation of suspensions of tricalcium, aluminate, The measurement of the kinetics of supersaturation in these suspensions was conducted by means of a conductometric method in 4, rLttrogsn atmosphere at an optimum velocity of mixing. A diagram illu" *trat*3 the modification of the specific electric conductivity at 2oOC in tricalcium. aluminate suspensions with differing concentrations. In all suspensions with a sufficient concentration a constant level of the electric conductivity is arrived at, corresponding to the maximum supersaturation. This constant level is reached comparatively slowly, that is to say, the faster, the higher the concentration of the sus- Card 113 pension. At low concentrations it is easily possible to divide the 20-117-5-32/914 A Determination of the Supersaturation Value of Tricalcium Alilminate Suspensions in Water Medium, and the Kinetics of its Variation. curve of the kinetics of the electric conductivity into two parts. Initially, the electric conductivity increases quickly, until. it ream ches a sharp salient point, and afterwards it increases much more slowly. Then the mechanism is described, an which these kinetics are based, that is to say, that protective films are formed on the sur- face of the particles of the tricalcium aluminate consisting of nemly formed substances. This may be verified by the following means; 1) By the introduction of small crystals of previously produced, fini- shed hydroaluminate. 2) By the introduction of small admixtures of surface active substances. A diagram illustrates the kinetics of the electric conductivity in suspensions of tricalcium. alumJnate in the presence of,admixtures of finished hydroaluminate of vaxying quantim ties and of small admixtures of sulfite-alcoholL grains- The admixture of hydroaluminate has a markedly accelerating effect on the increase of the concentration in the solution. The small admixtures of sulfite-' alcohol grains (which are completely absorbed by the initially exi- stent particles of tricalcium. aluminate) do not modify the maximum level of the electric conductivity, but have an essential influence on th~"kinetics of the process. Card 2/3 There are 3 figures, and 7 Slavic references. A Determination of the Supersaturation Value of Tricalcium 20-117-5-z2/54 Aluminate Suspensions in Water Medium, and the Kinetics of its Variation. ASSOCIATION. State University imeni M. V. Lomonosov, Moscow (Moskovskiy, gosudars vennyy universitet imeni M. V. Lomonosova). SUBMITTED. JulY 1-9s 1957. Card 313 20-6-32/47 AU"'HORS; Luiclyanova, I., Segalova, Ye. Ye., Rebinder, P, &., AcademIcian TITLE; On the Nature of the Induction Period in the Hydration of PortlAnd Cement With Additions of a Hydrophilic Plastifier (0 prircde ina dukts;ionnogo perioda gidratataii portl-andts.ementa s dobavkami gidrofillnogo plastifikatora). PERIODICAL: Doklady AN SSSR, 1957, Vol. 117, Nr 6, pp. 1034PZ-03(a (USSR)s ABSTRACT: The interaction between Portland cement with water takes place without a perceatible induction period. The hydrophilic plastim fiers (ligno-sulphonates of the "sulphite, distillerts washil, in the following called SSS) bring about an induction period. This faet is beside other favorable influences of these additions used for the consolidation of the disperse structure of the cement stones In spite of several works dealing with the part played by the SSS (references 1-5) the.causes of the induction period remain unknown* It is the object of the present paper to determine the part plVed by the adsorption of the surface-active substan--e from the water medium of the suspension on the developing small crystals and points of formation of the new phase, the new hydrate formations. Card 113 The authors found that- the initial adsorption of the lignosulphow 20-6-32/47 On the Nature of the Induction Puriod in the Hydration of Portland Cement With Additions of a Hydrophilic Plastifier. nates in the cement suspension.may be considerably reduced and its content in the water medium correspondingly increased. This can be done by the introduction of small quantities of salt whicli form insoluble compounds at the surface of the cement particles and can therefore be better absorbed by cement than Lignosulphonatese Caro bonates of alkali metals expecially act in this manners AIDW w�thout SSS, they are not capable of bringing about the induction period, The calorimetrical investigation of the cement hydration leads to the determination of the kinetics of the separation of heat, (figure 3.). The addition of Ox5 O/o SSS leads to a shcrter induction period, after which the hydration takes place more interp sively than without such additions. The induction period is rapidly prolongued by increasing K2CO3-additions. The separation of heat during this period increases almost proportional-with the duration, and the total separation of heat during the induction. period ins creases with increasing content of SSS in the liquid medium. The a-wme rules are also noticed for the separation of heat with increase sing total content of SSS in the cement suspension- in the cast of an equal effective carbonate content (figure 2). By effective quans Card 2/3 tity is to be understood that which remains after deduction of the 20-6-32/47 on the Nature of the Induction Period in the Hydration of Portland Cement With Additions of a Hydrophilic Plastifier. quantity consumed in the exchange reaction with the Ca-lignosulphow nates. The phenomena described raise the assumption that the begin- ning of the induction period is caused by the presence of a hydro- philic surface-active substance in the liquid medium of the suspens sion. Thus the chief factors determining the duration of the induc- tiomperiod of the cement hydration in the presence of SSS are: a) the initial concentration of the plastifter in the water medium of the cement suspension which is dependent on its total content. and on the quantity of adsorption at the primary cement particles, b) the velocity of the binding of the plastifier by developing crystallization points of the hydroaluminate. It has to be pointed out that the stabilizing actiom of the layers of adaorption, of the Idgnososulphonates of the SSS also plays an obvious part in the pL-:Lst:Lfyi-ng total effect. Thereby the formation of the coagulationa structures is prevented. These layers may also slow down the dissom lution of primary cement particles in the water. There are 2 figures, and 7 references, 6 of which are Slavic. SUBMITTED.- July 19, 1957. VAILABLE: Library of Congress. Card 3/3 REBINDER, P. A. (Moscow) "Structure Formations in Dispersed Systems; Structure Types and Their Rheological Properties." report submitted Third Intl. Congress of Rheology, Bad Oeyngausen, M, 23-30 Sep 58. REBINDER, P. A.) MIKHAYLaV, N. V. and IVANOVA-CHUMAKOVA, L. V. ---. - "Rheological Ebramination Methods of the Formation and Development of Volume Structures in Colloidal and Polymer Solutions and the Results of the Application of these Methods." report submitted Third Intl. Congress of Rheology, Bad Oeyagausen, GFR, 23-30 Sep 58. SLERB-SERBINA, N. N. and REBINDER, P. A. '. Physical and Chemical Basis for Regulating Structures and Mechanical Properties of Clays and Clay Rocks," paper distributed at the International Clay Mineralogy Congress in Brussels, Belgium, 1 - 5 Jul 58. Comment: B-3,116,8591- 11 A, f~'r~ ') iIF-:-r17. NaKRAYLOV, N. V. an REBINDER, P. A. (Moscow) "The Rheological Properties of Bitumen and Influence of Temperature, Filler, Additions, Solvents (Plasticizer) and Surface-Active Substances an the Same." report submitted Third Intl. Congress of Rheology, Bad Oeyngausen, M, 23-30 Sept 58. RABIWAII, Petr Aleksandrovich, akademik; PAYNBOYM, I.B., red.; GUBIN, H.I., ~ .~.o I:hn . r.ed. ' -" ' - (Physicochemical mechanics; a new branch of science] Fiziko- khimicheskaia mekhanika; novaia oblast' nauki. Mosk-va , Izd-vo "Znanie.' 1958. 63 p. (Vaesoiuznoe obahchestvo po rasprostraneniiu politicheskikh i natichnykh znanii. Ser.4, nos.39/40) (MIRA 11:3) (Hecb,snics) 5( it', PfMSE 1 BOCK KUTDIDITATION SOV/2610 Akademiya nauk Uk--kv-.,.r;-z lk-crp-- F.SR. In-Etytut mashynoznavstva ta avtmatylk,y Dey9ki 17tannya mek-1ccia-Aky metaliv (Ftyr-.1cal, Chemical, bzd Mec~-a=,Ical Properties. of Me4-als) Kyyiv, 1958. 142 p. i-opies printed. Resp. Ed.: H.V. Karpeako, D-D~?tor of Technical.Sciences; Ed. of Publisli-Ing Fous~-: V.-'-. Tech. Ed.: V.I. Yurchyshyn. PUFF1,1SE -The collc-rtioa -'.6 ----tended for metallurgical engineers desiring infor- mation on fatigue ezid corr,~iion. COVERAGE: Tae colll-cticfc -.f 15 A-rt;icles in Tkxainian cmpiled by 9 authors en- gaged in and -~51aa research,, is devoted to the subject of engineer,. ing practices iii testing the properties of metals, mainly steel, with a Darticular on, of corrosion fatigue and the effect of various liqtxid meuz_'a upon fatl~it--. Methods of investigation are deEcrihed Card 1/5 Phyt4ica.l, Chem' cal, a-rid SOV/26lo and the resultt-, --~olieir'-'Lon is dedicated to the sixti eth anni-versax-j of the Ac.aJL-vidLt!--!.az- Petro Oleksandrovych A.1eksandr?7ich) Rebinder, an emlnent The tests vere conducted at the Instytut bUCU've2lacryi me1t.'aniky -Mechanics Institute), Kiyev,, Instytut mash7noznawt-va ta ar, 1ding and Autmation I tjtui*e) -- L ns Llvoirl 'br-,th ur-dji---r t.!:.e Tirk-rainian Academy of ScienCe6 and at the _Cal T-nZt-TtUte), Khar1kov. Referr-nees fc-11cri, 1ABLE. ~::F C~'JR-11TITT-6: Rebinder P. M4F.;--.!1'aLAns 3 7 KarperLko, H.V. Effect -3j' on Strength of Metals 17 Afendyk, L.H. Peformat-lou A-n1sc+.r-:Ty- of Mechanical Properties of Steel in Certa-in Nonurl-L",~---m Pr----esses of Plastic Deformation 23 --ard 2/5 Phys, Leal, Chemleal., and Mechanical (cont.) SOV/2610 Karpeako., H.V. New Concepts on the Mechanism of Corrosion Fatigue 47 Yanchyshyn, F.P. Effect of Agressive Liquid Media on the Fatigue Strength of Steel Subjected to Stress Concentrati&s 53 Yatsy-uk, A.I. Absence of Direct Relationship Between the Fatigue Strength and Corrosion Resistance of Steel 75? Karpenko,, H.V. av4 F.P. Yanchyshyn. Effect of the Tapping Temperatuzz* of 44M_Steel Upon its Corrosion Resistance and its Corrosion-Fatigue Stre~gth 83 Stepurer-ko. V.T. Corrosion Resistance of 114511 Steel &9 Stepu---enkc, V.T. Corrosion-Fatigue Strength ~f 1145" Steel in Hydro- sulphuric Sclutions [Acid 97 Card 3/5 Chemical and Mechanical (d-ont. SOV12610 Yanchy-ihyn:, F.P. Nature of Fatigue Failure of Induction-hardend specimens of ",45" StF4el with Stress Raisers lo6 Chayevsll,~, M.Y. Brittleness of Low-carbon Steel Caused by the Action of Hydpogen 112 Chayc-vslk,v,v, M.Y. Effect of Molteh'Tin lLpon the Fatigue Strength of Steel 116 Tynn-y-y, A.N. Effect of Suljphiding by the MAZ (Minsk Motor- vehicle Plant) Method on the Weax-resista~ce of Iron and Steel 123 Chayev-.45 1qruiVdA Machine for Fatigue Testinf in Certain Id;quid Media 134 card 4/5 Physical, Chemical, and Mechanical -: (Cont.) SOV/2610 chyshyn Methods of Yatsyuk, A.I., V.T. Stepurenko, and F.P.Jan Investigating the Fatigue Strbngth oil Metals in Aggressive Liquid Media with the NU Testing Machine 140 AVAILABLE: Librax7 of Congress (TA-465.A42) TM/gnp Card 5/5 12-22-59 A- AUfHORS; Titov, A.I.; Vlodavets, I.N.; Rebinder, P.A. 69-20-1-13120 TITLE- The Processes of Structure Formation in Milk Pat andTheir Significance in the Manufacture of Butter (Protsessy strukturoobrazovaniya v molochnom zhire i ikh znacheniye dlya proizvodstva slivochnogo masla) PERIODICAL: Kolloidnyy Zhurnal, 1958, Vol XX, # 1, pp 92-101 (USSR) ABSTRACT4 A study has been made of the strength characteristics of milk fat and butter. It was found that in order to satisfy the consistency of butter)the fat must form a mixed crystal- lization-coagulation type of structure with the coagulation structure predominating. The specificities of structure for- mation in the production of butter by churningjand by the con- tinuous chilling of high fat content creamphave been examined. Two major ways have been indicated for improving the butter consistency: controlling the crystallization temperature of the milk fat, which allows changes to be made in the total solid phase content of the system, and regulating the me- chanical treatment in the hardening process, which allows changes to be made in the character of the structure formed Uard 112 so as to bring it closer to the crystallization or to the 69-20-1-13120 The Processes of Structure Formation in Milk Fat and Their Sifnificance in the Manufacture of Butter coagulation type. There are b figuresl and 15 references, 11 of which are Soviet, 3 English and 1 Dutch. ASSOCIATION: VEesoyuznyy nauchno-issledovatellskiy institut molochnoy promyshlennosti, Moskva (All-Union Scientific Research Insti- stute of the Milk Industry, Moscow) SUBMITTED; July 19, 1957 AVAILABLE: Library of Congress Card 212 AUTHOR. Re b i nd_e ~A_ -- sov-69-20-5-21/23 TITLE: Current Problems of Colloidal, Chemistry (Sovremennyye proble- my kolloidnoy khimi--*) PERIODICAL: Kolloidnyy zhurnal, 1958, Vol XX, Nr 5, PP 527-538 (USSR) ABSTRACT: All two-phase disperse systems can be divided in two groups according to the value of the specific interfacial free en- ergy a- which may be higher or lower than the border value a-t- The aggregate instability of lyophobic systems increa- ses with the decrease in particle size and with an increase in their number per unit volume, i.e, with the increase of Brown~s movement and the probability of effective collisions. In lyophobic emulsions, further dispersion is impeded by the increase of the reverse processes of coalescence. The dif- ferences between lyophobic and lyophilic systems are especi- ally pronounced for systems with liquid interfaces, i.e. emulsions or semicolloids. These may be formed continuous- ly from the lyophobic systems, type "oil in water", by in- -active compcnen-1, like soap in suffi - troducing a surface j i cient quantitie3, Solutions of surface-ac-cive substances with a hydrophilic polar group and with a sufficiently long Card 1/3 hydrocarbon chain are lyophillc colloids, The volume con- Current Problems of Colloidal Chemistry SOV-60-20-5-2/2A .L .1 1 tent of the solid disperse Dhase is considerably increased by stabilization, The high elasticity, i.e. the strongly developed elastic after-action is a property of the coagu- lation structure. The transitional colloidal systems easi- ly form thixotropic coagulat-ion structures, i.e. gils, al- ready at small concentrations of the disperse phase- The mechanical properties of coagulation structures may be con- trolled by increasing the degree of filling of the system introducing stabilizers and coagulating agents, The part- icles of the filler form a suspension which favors the de- velopment of a three-dimensional structure, The electric conductivity is influenced by the active filler, e.g. car- bon black in rubber, and increases with the increase of the potentials, The processes of destruction of solid bodies and the foregbing deformation processes are very sensitive to physical-chemical facto--s /~ef_ 307, The destruction pro- cess, i-e. the appearance of new surfaces with correspond- -ng surface enrgy, takes place at the expense of the elast- I - ic energy accumulated during the preceding deformation, Un- der the same mechanical conditions of destruction, the new- ly formed surface is larger in a surface-active medium than Card 2/3 in an inactive one. The investigation of the dispersion pro- Current Problems of Colloidal Chemi-stry Sol" - 6 9/ - 220 - 5 - 2/2 3 cessoa, permits tho continuous Lransition from the mechani- cal destruction to spontaneous dispersion. There are 34 re- ferences, 33 of which are Soviet and 1 German. ASSOCIATION: Institut fizicheskoy kh-imi-4 AN SSSRIOtdel dispersnykh sistem. (Institute of Physical Chemistry of the USSR Academy of Sci- ences, Department of Dispersed Systems),. Moskovskiy univer.- sitet,Kafedra kolloidnoy khimi-4 (Moscow University Chair of ~.Iolloidal Chemistry) SUBMITTED: June 16, 1958 1. Chemistry--USSR 2. Colloids--.4-nalysis 3. Col-loids--P-roperties Card 3/3 SOV-69-20-5-13/ /2`5 AN11"HORS: Segajova, Yr. . Ye. , Sarkisyan, R R , Yebinder P A. TITLE: The Effect of Hydrophilic Plasticizer Additions on the Ki- netics of Structure Formation in Cement Hardening (Vliyaniye dobavok gidrofilinogo plastifikatora na kinetiku strukturo- obrazovaniya pri tverdenii tsementa) PERIODICAL: Kolloidnyy zhurnal, 10,58, Vol XX; Nr 5, pp 611-619 (USSR) ABSTRACT: The influence of hydrophilic organic surface-active substan- ces of the sulfite-alcohol slops type on the properties of cement, concrete, etc. is investigated. A Portland cement suspension passes three phases during mixing: 1) The appear- ance of a coagulation structure of the cement particles, 2) The appearance of a complex loose crystallization struc- ture of hydro-aluminate, 3) The appearance o--F' a coagulation structure of the initial cement particles and the newly formed micro-crystals, Figure 1 shows the increase in the plastic stability at various intervals of mixing in the pre- sence of sulfite-alcohol sloDs SSB, The stability decrea- ses due to a prolongation of the induction period of struc- ture formation, then it increases rapidly due to 'he form- ation of a hWdro-aluminatecrystallization structure. Figure 2 shows that the plastic stability increases with the quan- Card 1/3 tity of SSB added, The greatest plasticizing effect is SOV-69-20.-5-13/23 The Effect of Hydrophilic- Plasticizer Additions on the Kinetics of Struc- ture Formation in Cement Hardening obtained in phase 1 during mixing (Figure 3). Figure 4 shows the water-cement ratios necessary for the producticn of an equally plastic cement, in the presence of SSB. The greatest Dlasti-cizing effect, i.e. the greatest decrease of the water-cement ratio is observed in phase 1 of the mixing, This minimal water-cement ratio does not depend on the mine- ralogical composition of the cement, The duration of phase 1 with various additions of SSB is given in Table 2 for the two cement types AERM and KI'S. Various specimens of cement with different additions of SSB were tested for res-~stance after 3, 28, and 90 days, The results are given in Figures 5 and 6. The resistance curves for cement with preliminary hydration (Figure 6) show a drop which begins at an earlier stage than in the curves of phase I (Figure 5). The final resistance of cement prepared by SSB i; always lower than without SSB, if the %mater-cement ratio is constant (F--gure 7), if the initial plasticity is the sa:;-Ie (FiFure 8); the Card 2/3 resistance of the cement is increased in the presence o! SOV-69-20-5-15/23 The Effect of Hydrophilic Plasticizer Additions on -,he K~ret-'C= cF S~-r-ac- ture Formation in Cement Hardening SSB_ There are 3 tables, 1-0 graphs, and 4 Soviet referen- ces, ASSOCIATION! Yoskovsk-iy universitet,Ehimicheskiv faklul~teT,Kafpdra kol- loidnoy khimii (moscow University; Dert. of Chemistry, Chair of Colloidal Chemis-Gry) SUB11ITT"ED: April 18, 1958 1. Coment--Hardening 2, Cement--Cherrnical reactions Alcohols--Chemical reactions 4. Sulfides--Chemcial reactions Card 3/3 'AUT:T0'PS- F..A, SOV-6q-20-5-18 Shchukin, Ye.D., Rebinder /23 , . TITLE: The For-ation of TTe_,N__5-urf`Yc-esDur.n;z t~e Deformation and Rupture of a Solid in a Surface Active Medium (Obrazovaniye novykh poverkhnostey pri deformirovanii i razrushenii tver- dogo tela v poverkhnostno-akt-ivnoy srede) KoIloitIny.,1 zhurnsil, 19~8, Vol "'A, 111", 9, pp W-61)4 Oj'isi,) P.;7,"jT Pl~ 'I.,!e ;,Ist-,r:,tion ,)f surface-ac"vc- by -a body wh_'ch is being de-_F'ormea, may lnfluencc- -s de~crma-_on and resistance properTies. This is -,rue for tfle deform-atfor. of monocr-~stals of tin, zinc, and other metals- in solutions of non-polar vasel-ine oil, Tn comparison to the free sur- ~ace energy of these monocrystals (500-1,000 qrg/cm the reduction amounts to only some tens of erg/cm-. This effect is ex:)lained by the movement of dislocations and their In- teraction with the surf-ace ener6ry, T';-e dislocation .s a thermodynamically unstable ciefect. It, is attracted to t*ne surface and the attraction force is reverse'%- proportiona-* to the distance from the surface. Brit~leness and a decrease in resistance ma-; be observed in monocrystals of metals in the presence of a covering of a low-melting metal, like tin or mercury. The decrease of the free sur-face ene_rlgy on -he Card 1/1 Borden between the metal and its saturated solutz~on is con- The Formation of New Surfaces During the Deformation and Ruptule of Solid 7. 1. in a Surface Active Liedium ASSOCIATION-, S'LJ'M'=1TED: 2 siderable. i' amounts to hundreds of' erg,/cm ~he a- -tual rupture stresses on the cleavage Dia U ~ nes are lower than the calculated values. This is due to micro-cracks in the cry- stal, The change in deforma-tion and rea-istance rrcperties under the influence of adsorption is also observed in glass, It has been established that the presence of water vaDor re- duces the rupture stress of glass fibers, Under th~ influ- ence of adsorDtion, the free surface en-rgy of a sclid body may be reduced to some tenths of erg, /cm. -, !n such a case, a spontaneous dispersion of the body intc. partilcles of cc!10- idal size wilth 10 0 cm in diameter takes z)lace, U-ere are 2 sets of graphs and 28 references, 1q of which are Soviet, 7 English, and 2 German, Institut fiziche3koy khimif AN SSSR Ot-del dis-pe_~sr:-kh sistem l';'.oskva (Institute nr Physical Chemistr_,,, of the M;R Academy of Sciences DeDartment of _Diszersed S-1-stems'lloscow) june 16, 19~8 - - s. !. Single crystals--Defc-_-mation 2. Metal crystals--Properties Card 212 SOV-69-20-::-19/23 A U T.", 0 R S Bartenev, G..,',, Yudina, !,V., Reb--nder- P.A-C TITLE: A Contribution so the Theory of the Sponzaneou_= -Dispersion. of Solid Bodies (Y teor-ii samoproizvo--,'.,icgc die-perairo-,raniya tverdykh tel) PERIODICAL! ~olloidnyy zhurnal, 11c,11-9, Vol. XX, Nr 5, pp 655-664 (USSR) I ABSTRACT: The cause for the resi,3tance decrease of a solid in a sur- face-active me C14UM 4S the redu--,'lon of zurface energy on the border solid-medium. Media which are simllar i- their molecular nature decrease the aurface ter3ion of 'he solid and rupture takes place, For metals, suzcn medla are low- melting metals and alloy3,, Spontaneous dispersion tak6s place along wakened borders, whereas dest-ru3tion from out- side moves along the plane of greatest stress. The growth of cracks proceeds with increasing spead unde_- outside stress. In spontaneous dispersion, she speed is more unifcrrm, a!- though low, In Figure _22 the left Zinir:-=_ _--f potential ener- .gy corresponds to the stable cond-itisn of "'-e pars-1cles in the body, the right minim-um to t"ne stable condition on the new free surface. in every crystal, there are surface de- fects and micro-cracks which appear dur-inG the growth of Card 112 the crystal. During spontaneous dispersion the active me- 7 J, Ili; M( P; Taubman, A.,B,, S ~'V - 6' Q 15 - z 2 3 TI TLE The Fourth All-Uni-on Conference on Colloidal MLml_,~rry (Chet- vil ertalya vsesoyuzna,,,a konferents".ya po kollo-idnoy lciiimii) PEPITODICAL.- 'i Kolloidny- zhurnal, 1958, Vol XX, Nr 5, pp 677-6?a (75SR~ AES7RACT: Tie Fourt', All-Urion Conference on Colloidal Chemistry -took z)iace ir. Tbilisi from 7-ay 12-105, 1958_, ;.*ere than 1-50 paDers _TT_ -_ )resen-ed - ~.~V. , - - were ,,manskiy read a paper on th~ history of colloilal-chemical investi~-ati 7.h in tne USSR - e con- ference '-ieard the 1'c-J_lo-.-:ing reT.orts: V A. KarBin, Tsvet- kov, S.~... Lipatov, on nolymers, their solutions and semi- colloids: 4.T. Yurslenko, Khomilkovskiy, on the mecl-a- nism of polymerizationj B,.A.. Do--adkin, on tile pro- dL;ction and the prc!-,erties of the ink-,erpolymer of natural and butad-Jerestyrene rubber; Zubov -or the mechanism , of the formation of pollymer filmis in gluing proce_sseS; S.S. Voyutskiy and 1),7.'. S-andom`rskiy, on col-icid prcpertieS o-f latex systems; A.S, K'uz'mirskiy and A_!', Pisarenko, on ~-he properties ci~ rubbed and resin solutions; V,,A. F'c-~'_'n, on the struc"-,-irii-,-.c-cl,.ani-ca1 propertles of gplati~.e gels; -~_A. Demchenko. cn sclubll]._-ation 4n soa~~ sc-11----ons; ;-7, Du- Car-i 1,14 manski-Y- c- me t,-.o,,i3 iY-:-2s-igari.--g 'u-he s rruc 'u_-es ~af Tii;4 Foiirth Al I -*.Jr,-i or, I I ci' o? I (:k) 1 loit I a, C1142ir 1~-'i:_-Y -'3 0" - t s oa D s and re s A . 1)eb r d e r an s u-f formation in sclidification Prccesses o~ birding "~-r-a7S; A,A.. Trapeznikov, S.S, Voyut-akiy, B,Ya. S-%--Y; :C.v. Vinogradov, on nroblems of rheology and struc"-urtn formatIon In oleophilic systems; L..A, Kozarovitskiy on the mechan-ism of the printing process -and the influence of the rheological Dronert--es of prJntinE dyes; 7.T:. Vlcdavets, P.A.. Reb4nder on the process of structurt, formaticn in food STIUPFS; VT, Likhtman, G.I., 3a_~tprev, Ye-.:1), Shc-ukin, P - ~-_ = ~~4 E? r ; on deformation processes, the rheologicall .ondu~-, an-i _e de- struction of solids and metals; P,.--'. T'isser (GEPIRI), an the surface disper S4 on or- ---o!4d bod'es: Lin4c '~GDR), on the in- I'luence oF surface on tl-.e kineti zs cf heterogeneous I,* Y e ,iqh 'ash Drocessos of diftision excnange; -n-- v4 1 Volaro-,rich, I's N. Serb-Serb.na, Den-_.sov, Z-Ya. Beres~_ neva, A,S.. Korzilij t2v, S.-P, ;?:_Jch_Jpo_-enko, C.T. Kukole.-..ra., F , -D. Ovcharerko, 1,T, - An-,4pov-Karataye,~ , on ztr~icture to=atlon in the colloidal clcemistry of cla~7s and 3.7v, DeryaEin on the interact.on of twisted netal threads in scluticns of electrolytes; A.D. Shel:dko, Y_B. Radvinsk-4y, on the resist- ance of free films and foar:s; Sc'L !.'erpin, on the hydror-ne- charics and thermodYnamics of tilin filins and their _4rfluence Card 2/14, on soil properties; S-Yu. 71'e-lovich, On catalytic processes The Fourth All-Union Conference on Colloidal ",eln4stry in foams; Yu. M. Glazman, on the first mathematical theory of ion antagonism; 0.1". Grigorov, D.A. Fridrikhsberg, S,G, Teletov, on the elec-crokinetic properties of colloids in zonnection with their coagulation by electrolytes; Ye,!,!_. 11apobashvili on radiation ~~olloidai chemistry; BA Dogad- kin, on 'the chemical sorption of sulfur and rubber on car- bon black; S,G, L!okrushin, on the formation of thin colloi- dal films, N.A. Krotova, on the influence of an electrical field or. the dispersion of a liquid; E.1,11, Natanson, V.,G. Levich, L,Ya. Vremnev, A,B_ Taubman, on the resistance of emulsions and suspensions in connec--ion with the stabili- zing action of struct-ure-mechanical properzies of protec- tive surface layers; P.S. Prokhorov, B,V. Deryagin, G.I. lzmaylova, S,S,, Dukh-4n, on the adsorption of vapors by con- densation nuclei and the2.r influence on the format-ion of water aerosols; P.I. Kaishev, 0.1%'. Todes, on the kinetics of formatien anddestruc'ion of aerosols; .4-B. Taubman, on Card 3/4 the kinetic wetlng in the Process of co-1-12-eo-C.Ing ausr by use SOV-069-20-5-23/23 I -, - The Fourth All-Union Conference on Ool_,cida- Chemstry of solutions of surface-active substances; A.,N, Frumkin, Dubirin, B,P, BerinG. V.V. Serpinskiy; V.!,*. Luk'ya- novi~,h, L.V. Radushkevich, G,V. T3iTsishvil-_.; N,F. Yermo- 'enko, on the adSorpl4on from -vapors and 1'quids 1. Chemistry--USSR prope--t-iLes Card 4/4 .~rj A4) ' AUTHOP,6: Segalova, Ye. Ye., KorL)rovich, S. I., SO11/20-12 7/-,7- 36154 1 hobinder, P. A., Academician TPPLI~: lli'eatures of the Kinetics of Supersaturation in Aqueou-s Suspensicras of Calcitmi Oxide (Osobennosti kinetiki perz,syshche-1--ya, v vodr4kh sucprjr.,ziyakh okisi kalltsiya) PERIODICAL: Dokiady AkadeMj4 n-,uk SSSR, Vol *12-'., Nr 3, Piv 5109-512 (USSR) ADSTEACT: The authors inves~i~~-ate the abovc-mentioned kinetics in order to find the characteristic fe--~.-ures of its h.~dration hardening and the nature of the supersa-turations In these suspensions. The abovp L -- --mentioned ware. de',3=-ined cc nduc tome tri Cally in a spe-;ia7- vesse]. with bl--Aenc-d electrodes, a stirrer, and a thermometor. The exie-~Im~2n-s vre carried out in a nitrogen atmosphere at a temperature cf 21.6 � 0.050. A diagram shows the variation of the electric conductivity (concentration) of an aqueous suspension or CaO as a function of the rate of intermix - ing of the suspension. AccordinE to this diagram, the rate of intermixing-, has an influence not only or- the rate of obtaining Card 1/3 the --ax.-mim value of the electric conduc IlD, 4-+I-y, but aisc on. iss -"he f f-,Ije X4 -,~ ' U SCV120-1, porsaturatiC~n In Aqu-e~;us S,_;sparsi--Dns -C Caiz:`am. Oxide Su allsoluto va",aa. Even at- an anguiar v-~Iocity ,;f !600 rev~lutf::FIR /M :-,' the mixerl r,--., stea!y supe--saturatio-n was obeerved. Ther-at-d-ral way of detectln.,, the s',-alblo leve! of supersaturation is by Intr-.ducti(-,rL of sur%kia-active substari.(-.Os into 'the aqueo-.:.s suspens-ions 6f CaC1. Ylnese admixtures preactuically dr, r_.~t change the solati.-Lity anid ::a--q stabilize the gen-erated nm,~~Iei and prevent thpir 3rovith. In this way, the supersaturation in the li(luld phase of the suspensicn is decreased. The authora Jintroba,,.-~d adr,4~-tj:LreS of sulfite-alichol vinasse fbarda) ari By the addit-1--n- of surfe.,,~-acTlve a3m~4-',_-rcs -*,.L'.:) a.-uaous sus-ensions *'I C-=.O, their elsztric; ~.-.cndiwt_J*~7.Ltk,- sharply Jrc_-eases. A sta'Ke of supers-, tura tion, is obtained by introd-_,cticn- Of a suff_`ciijn-~ quant-Ity cf awLiaixturet- Moreover, it was neoessary to irnestiga~e +he depe-nd-ance ~f the o_.-talned maxiimum supc~z- saturations on ~Iie bat,-~h of CsO. The increase in temDerature was -,bse-_--,~d after the int~oduc-,_`, -:n cf ihe first batch of CaO. The in teE:pere~ture --ausea *oy ~he introduct.-_*on ,)f the foilo-.~72,nz batches de~,,reases the rrumbar the ba-t.:.hes. The -ritr.-,duct'On of CaO inte the s t- icn cf 'he surfarte-actlive su'bstance sharply increases the Card 2/3 e 1 e c t r.-L r- rcnductivity which then remains constant for some sov ")c -,13 3 6 /5 4 K t ~ : ~3 n s or i J e ~.r ric -,onduc tivitY. u-,; The f a c t t I-. a t t h,~ ax - 1. 4 G a s vjen ~---f the ba ch c s tb at there pc; C~*Ilstarl level Df supr- which ~,?,n be corsidered as the "ution cf CaO X-Ide - e a, s-o dissclubility of 73e-2-um 0--- - - I t is attained. unto.--, the msy-iEuUl S11 9 f the of calcium ri ~. L )-.ydratia A dLss`-,uti~Dll P:-I-,~~?ea lizes 0a', oc,l-ut~t7--.. T-Ine con-ln,-traticn of c -s ystal L- - d t! ~il s oon be ~-: tarr..iined 1 v~ 41. -011-) C,,- n iL- an1. Iv- d I elect--,de. p0 0 -~ - +,E! n -"OME t -:L " ' Y of I-1-1hich :%-,-:~dnoy ASSOCCIATIONt 77. tE. 4-ersity V. Lomonosov) Otdel of Moscow State Urd. d-isp-rsnykh sistcm instituta fizi-,heskoy kh-imii Akademi-i na-ak SSSR (Lrancll of Dispersed Systems of the InZtitutte of Physical Cheuds'--Y :f 'u'llie Acad--m7, -r S3~on;---S, USSR) SUDYITTED 6111-. 'is, -1,98 Card 18M 'J'C,-7/2o-1 25-A -24/5 5 AU`77 OR S ~ n o y 11. A., lcademician i f _ ----------------- =_ T iT LE 'I'lie Influence of Surface- ctive ":!edia on the Surface-14ardening of I.Tet.-..ls (Vliyaniye -overkhnostio-aktivn,ykh sred na uiover- knostnyy naklep metallo-i) PEIRIODI'3AL Doklady Akademii nauk S3SR, 1)~A: Vol 12'5. pp 607/,-.L,)66 (USSR) S T RAC T Vlhen inve.-ti.-&,'~ing the hardening of metals it is necessary to di~tinLmish betaeen true am' c-ffective The truc h_~rderiinff of the nlippinL- surfaces means increase of given surface with ~,,royiinz, ab- the shearing strencth alonn- a r solute shearing. The effective stren.-thenini: of a sinjle as a sin,,le cryo-tal characterizes the increaoe of the i increas- resi:3tance of the metal to -1,~stic deformation vitl ' in,~, deformation and -s ex-,,resse-l b the -effective hardening .L Coefficient dx/da, rhere a "cencfes tAe specific crys- t-MoCra-,dhic dis-.,lace-ment 4r, the brain. Fnr the true harden- coefficient 1- it bolds "t-at 1- = dTildo, where -c denotes e-.~treme tan.-ential tension an', s - the absolute S'iear. Card 1/11 Betveen 1- -an!] ;~ the connection = ilk `iol(Is , w,':ere h deliotes '7he Tnf 1 uence o_-~' 5~a-f a c e-Act ive Mcd i a on e 51~rfac -H a r J --n in. -T'e 'a is ,0 rjonsity of 'ho slippin,,, layers. The effective coefficient of lriardenin,,,r thiis rle:-~,nds not only on the true .-trenuthenin-, capacity of t'ie slippin- ,,,irf aces but also on the de.-reu of dispersion of the crystal durin- deforLiiation. '~'J I Q T; rl2sent oaner descrilnes tlif- results obtkined bZr th e com- T)le;c investif-,.-tion of tho kinetics of the formation of the harden(_~d lw'-er in Lhe aurface nardeniri- of teclhnically pure iron in air and in some acLivo nelin. In this Connection. the influence exercised by sov,.~! Civen. effects producod by the Uvon ~Iie laicrohardriess of 'hardeninc- iris trunient (sriall roll) 1 tfle sample sLirfkace, the friction~il force, t*,,.,c.. structure of the hardened surface of the sa~mpie, thr,. specific Vorl: cf hi-rdening, -nJ the teimperature at t~~e ,Iace of contact between roll L~nrj sEimple, are investigate,]. 12hese investi,.-ations were carried out bY the met-hod developed b~r '7. Y~~. L-,,--ubiMo1ra (:,?ef 3) in an improved form. . dia~Tram shw-is, by way of an the. results obtained b,,,, experiments carrilei out --*n air and in a 0.2G713 soluticn. of st~,~ric acill in Decalin. '11he micro- ha_-d!ies:_- increase.~3 witk --n Jincrease DI tiIe nuTn".er 0~ 0 Card 2 h-_.-..rden ine-, 1c' ions : this increaso iz irre ular and -,assec SOV/2o-12,`-4-24/53 The Tnfluence of Surface-'ctive Nedia, on the Surface-H-rden-ing a' ~Tetals L it ,h several maxima. A very characteristic quantity is throup the differential work of the plastic Dressin,,,-in of a hol,~, (a = dA/d!1). This qu,ntif. y conveys an idea of the degree of res:~tance offered by the sam-ple to -rowinlg- plantic deforma- tion. Surface-active raedia exercise a dual influo-nce upon the process of -metal surface hardening: As a result of the reluction of stren.;-th due to adsorption, they fQcilitate the development of plastic deformation durinj the first Sta,reS of hardenin-- and "iey cause an intense stureno-thening- Of tile surface layer durinE the follo-in.g. eta:~es of hardening. '"he strengthening and t;lasticizinl- effect produced by surface- actice media is able to influence the Drecess of imetal cold- workinf considerably. In the cutting of metals the strengthen- in and effects of these rietals ugually lead to to the sarie result, viz. to a reduction of the de-ree of volume-deformation of the cuttin,,,-s anti of the suriace layer of the w-~rkpiece. There nre 5 fi~;7_,res an(I 3 Scviet refor- unces. 5 ' ' ) i, '~ A JTHU'HS P~-rtsov, 11. V., Rebinder, P. A-, SOV/20-123-6-30/50 Academician --------------- TITLEt On the Surface Activity of Liquid Mletallic Coatings and Their Influence on the Strength of Metals (0 poverkhnostnoy aktivnosti zhidkikh metallicheskikh pokrytiy i ikh vliyanii na proc!inost' metallov) Pz~RIODICAL: Doklady Akademii nauk SSSR; 1958., Vol 123, 1Tr 6, -1 ~p,) .063 -- 1070 (USSj'j) One and the same coating of easily fusible metals diminishes the strength of som-ci metals but exercises no influence on other metals. On the other hand, also the behavior of one and the sarae metal depends on the chemical nature of the metallic coatinC~ The d,~-crease in strength can by no means be ascribed to the dissolvin6 effect of the molten coating, nor need it be connected with the selective effect on the grain boundaries. Experimental data on the influence exercised by easily fusible metal coatizi.-s upon the mechanical properties of metals are divided into two distinctly separated groups: 1) The strength Card 1/~: of the investigated metal is considerably reduced. 2) There 1 0 .On the Surface Activity of Liquid 'Lletallic Coatings :ZCV/20-123-6-30/50 and Their Influence on the Stren3th of Metals is no such reduction of strength. A comparison of these data with the diagrams for the fusibility of the corresponding binary systems metal-coating shows that to the decrease of the stren-,Yth of a solid metal under the influence of a liquid coatinC there always corresponds the existence of a sufficiently narrow but absolutely finite domain of the formation of a solid solution. Corresponding to the complete lack of strength reduction, there corresponds, in this diagram, a wide range to which there corresponds the formation of a solid solution of the metal coating in the investigated metal, Seen from this point of view, the results obtained appear to be trivial. If, however, the range characterizing the production of the solid solution is so narrow that also the system metal coating is ou"Iside this ran,-Ie, the deformation of the metal takes place in the oresence of the liquid phase of the coating. The reduction of the strength of the solid body (of the metal) !itay be explained by the absorptive effect of the molten metal coatin.g. In polymolecular transition layers to the film of Card 2/.1 On the Surface ActivitY of Liquid Metallic Coatings SOV1120-123-06-30150 and Their Influence on the Strenath of Metals 0 the liquid phase on the surface the work of formation on the discontinuity surfaces decreases with an increase of recipro- cal fusibility. There are 1 figure, I table,and 8 references, 7 of which are Soviet. AS',OCIATION: Kafedra khimii Mo8kovskogo stankostroitellnogo institata (Chair of Chemistry of the Moscow Machine Tool Institute) Kafedra kolloidnoy khimii Moskovskogo gosudarstvennogo universiteta im. 14. V. Lomonosova (Chair of Colloid Chemistry of M~oscow State University imeni M. V. Lomonosov) SUBi.!ITTED. September 16, 1958 Card 3/3 PHASE I BOOK EXPLOITATION SOV/3604 Alcademiya nauk SSSR. institut mashinovedeniya Povysheniye effekti-v-nowl-I toA-moznykh us-tbroystv. Svoystva frik-usion- nykh materialov (I=~-easing the Efficiency of Bx-aking Devices. ProDerties of Friction Materials] Moscow, Izd-vo AN SSSR, 1959. 183-p. Errata slip inserted. 1,800 copies printed. Reop. Ed.: V.S. Shchedrov, Doctor of Technical Sciences, Professor; Ed. of Publishing House: P.N. Be-lyarrl.n; Teah. Ed.: T.V. Polya- kc~va. PURPOSE; This collection of articles is intended for engineers and zeientifia workers specializing in brakes and fricl.-lion materials. COVERAGE: The first- group of articles deals with basic design measures for increasing the life and efficiency of brakes, the second group with problems related to the development and fields of application of new friction materials, the third group with testing methods and the results of investigat-ions of friction Card 1/7 Tr,,3rp Cy (cont. SOV/3604 -asing the Efficien pairs and brakes, and the foux-th group wi44-,h the design of brakes and ir!alxilation data. No pplrsonaliti-,is are mentlo~-je--d- References a-ccrimpany most of the articles. TABLE OF CONTENTS: ,--Rebinder., P.A., Academician, and, V.-R. Vik'5-dr~JvieY,---Kta:gej I skiy This artlicle describes "he wor1r. ~--f -that- on the theory of and prG-rerties of snow, textile rriateria1s, Principal published works cf 1.V. Kralgellskiy Shcha-lrov, Professcr. Igor' 3 Kragel I skiy, in particular wear. t-he physic o-mechanical 'and vegetation. 7 PART I. BASIC' DESIGN MEASURES FOR INCREASTNG THE LIFE AND EFFICIENCY OF BRAKES 10 Chupilko, G.Ye. Kinetic Energy Loading a-rid Capacity of Aircraft Wheel Brakes 10 The author discusses various types of landing gear brakes and Card 217 LYSIKHINA, Aleksandrs Ivanovna, starshiy nauchnyy sotrudnik;.RN~B P..A., skedemiki retsenzent; SMB-SMINA. N.N., kand.khim. nauk, starshiy nauchnyy sotrudnik, retsenzent; KHOTUNTSU, L.L., kand.tokhn.nauk, starshiy nauchnyy sotrudnik, red.,- ZUBKOVA, M.S., red.izd-va; DONSKAYA, G.D., takhn.red. (Surface activating additives for increasing water-resisting properties of pavements mde with bitumens and tars] Poverkh- nostnoaktivuye dobavki dlia povysheniia vodoustoichivosti dorozhnykh pokrytii s primeneniem bitumov i degtei. Moskva, Nauchno-tekhn.izd-vo M-va avtomobillnogo transp. i shosseinykh dorog RSFSR, 1959. 232 p. (MIRA 13:2) (Pavements, Bituminous) WOK r(pW1M4,TjCff SOV/3559 All-dood" mauk SWR- 10otlt-t al"llUM'" 3&=h"7 -evat YO Problem. sh~ra- procnaylen Pl~tvov 16-14da'ma'Y's PO %ber"ayrachnys' fiPlavea, t- 5 (rnvs4tlN%LJmm& Of Rest-Roeilts, A1.1-ye, Vol 5J X-CIw, 124-eO AN WSR, 1959- 425 P- Errata Lip La.,ortol. 2,000 copies printed. 94- at POLIghl-C Honed: V.A. XIIAOV, Tech. Ed.; I-F- rAzlftin; 741itorl.&I 1'..rd: I.P. 3ard.L., Acadcuician, G.V, Xurdymoy, AxadmlcLm, N.V. Agayer, Corresponding 14-be UWR A ftdoay of Sciences (Posp. ?A.), I.A. 0,ling, j.X. and I- F. ZU414, Caad:dat. of Tomhalcal Sciences. rLTU"WIt This back is intended for wate.1laygical am4ineors, "61-th worksm QtAUurgy. and say also be of Interest to studeats or joyaccod O~.. 14 : . 3A tsadrgy. CO"MLUI ThIs books consisting of a amber 00 papers, deals vith the pra;.~ ; ties or beat-redioung metals and alloys. &c4 at the ;m;*m I* devoted to the study of L" facto" wtolch art.-C the -4 behavior or The orr*cto or various elements such as C', No, on,1 w an the h~s%_m4i.tJmg proportion o- verlous alloys am tudlel. DeforcabIlity and wrkblIlty tAI ar certain " mlAt"% to to. thensal candItlons; s.ro the object of : 11 oz at or at U m cribod. The pooble-oa at hy1rogen ambrittlOacat, dl. -fuaLcet wA the deposition of c.rooda -oatlngd on catta surface& by manan of oloctrophoresis a.- oxnaltod. Ono paper doAcribas tb. np.~stu* &,14 Inethwa wed for gro~itlcg monocryntalm of mt&ls. Borom-b- zct&La oret crittc&Llj, -lo 1 and yLluat. d. Ro.uttm am gtron a!' tudleo or interatomic bootto : Z arA " btas or or Ltoosi to metal. Test# of turbine and compressor bl&1as a m described. No personalities a.ro menticood. ReforanI,as scom;uny awt of the artl4lai. AJ 11,Y.. Pmd-Oca or FO-CLIIO As'. f- lurb- dC-p--r 1~n V.7., and N.D. rmvolcping Aptr*tus and Methods - ev --r;r GUL.rFiFC 74c... z F-Ing ..ad It. Effect on tt.9 Pr,perti*a of CortaAn HickPI _,r,L=mn, nd AIII.rational Vcr.... I- 49444LT-7G~7.ory.t.l. Al! -sp"t ....... D!4p ... 11,. 1. a Llqu.td X,dlus. Llfr-lon Co4tine. On Ylolybd-,% L.1, Chud-~-, -Ad G-TI. Ks-d-y- Application or Car-- by )U3 h.l. Ad A.A. Y-r-1- ~-t FL-It.t.n.. or , - , --- ym ~n All Uy i Ad A.7. St.n.n.y. T~,.V-tur. Af pJ..tJcJt7 Ad 0.7. x --is ;-~VxTluj- . Ni7 A.D. -tik-, and Study of Thoem~dyrxxln A. Zhukhovit.k!y A , , j IAJ~jj-C-mf a a kli-Y. A. 0,inis and Of the Y~-oihtY Of At') 0 1 330 .ChudI, kly, A_.. study of Th.ro:ll Ch.r.ot.ri.ti.3 of All.y. -2 331, . .r!%l and R.F. H-h-Iyuk. On FthOda Of Toxt!ng Blade Xat , t fo i - rot I or. a Ad Cor. ox f6W fi4 $10 1. A I c " IJAdo r 5 -. zu.n t a d Ove - t I A a Cm AtU t I G - 3 46 D!lat-*trla Study Of Rfll-ti.n of and P,M. Vjd(PYqY- Dovidonk- " _ , plaitic.Ily 1:~f-d Alloys 35 Ldr-n-1, S-V- Fath-d or yloA,.tj.A by ,_ej,,: Ulth thI, Uso or Book Pr ... 11r. 31,11 Frobl- !, Voch-lcol Froparti- A7AJJ,jdiLL, Llbr.ry or c.he.... VK/ b Cord 9/9 .n, Z, t -7T~T~ All rnrii) 71 of I-urll ~I-je!dcal all for -Tillillg Kiel Fift~, 3c, 1 ay at t~~' jurlp "C~w York. MNR, TF. 113,as-,c Probieins of P-, sico-chemical ~Jecl-ianlcs of D~sperse and H-h-MO7 .1y -3~t Iic. tu rc,~~ report presented at the 3ection on Col-Loid Ch,:rdst-ry, '1111 Mendelleyev Conference t)f Genc.ral aiA AgpliuCl Chemisti-j, MOSCOW) 16-23 1,1--rch 1959. (Koll. 7-dmu.. v. 21., No. 4, PP. 509-511) 15(6) AUTHOR: Rebinder, P. A., Academician SOV./30-59-1-5/57 TITLE: New Trends of Colloid Chemistry (i'Tovyye puti razvitiya kolloidnoy khimii) PERIODICAL: Vestnik Akademii nauk SSSR, 1959, _Nr 1, PP 44-51 (USSR) ABSTRACT: At present, colloid chemistry plays an especially important part in political economy as it is a physical-chemical science concerning substances of modern engineering~ It is of great practical iMDortance that at present it is possible to carry on uninterrupted transitions from lyophobic to lyophilic systems. Thus, it is possible to obtain technically important substances with the required structural-mechanical properties. The theory of highly molecular substances and their solutions has developed into an independent branch of colloid chemistry. The vitality of modern colloid chemistry is proved by the fact that it produces many new independent branches of science. Further, the author describes the course of the 4th All-Union Conference of Colloid Chemistry which took place in Tbilisi on May 13-16, 1958. It was organized by the Otdeleniye khimiches- kikh nauk Akademii nauk SSSR (section of Chemical Sciences, Card 1/6 Academy of Sciences, USSR), in common with the Akademiya nank New Trends of Colloid Chemistry SOV/30-59-1-5/57 Gruzinskoy SSR (Academy of Science, Gruzinskaya SSR). The research work by M. Ye. Shishniash-~ili in.the field of sus- pensions of betonite clay-types, as well as agrocolloids - new organomineral preparations to increase soil fertility - is mentioned. G. V. Tsitsishvili reported on adsorptive pro- perties of natural and activated aluminum-silicate adsorptives, in connection with their structure and their use as catalysts. Ye. M. Nanobashvili spoke about radiation colloid chemistry. The Conference was attended by about 400 reuresentatives of nearly all the centers for colloid-chemical research at schools, universities, and industrial enterprises of the country, as well as by representatives from Bulgaria (R. Kaishev, A. Sheludko), the German Democratic*Republic (P. Tissen, G. Linde), Poland (A. Waksmundzki.,), and Czecho- slovakia (K. Spurny*'-). About 160 reports were discussed. The resolutions of the 2. Vsesoyuznoye soveshchaniye stroiteley v Kremle (2nd All-Union Conference of Building Experts in the Kremlin), which was dedicated to the development of the build- ing material industry, were of great importance to the work of the Conference. The author of this article reported on modern Card 2/6 problems of colloid chemistry. New Trends of Colloid Chemistry SOV/30-59-1-5/57 Further, the following talks were given: V. A. Kargin determined an analogy between the properties of colloid solutions and polymeric solutions. B. V. Deryagin reflected on the importance of surface forces in the kinetics of dispersion systems. E. M. Natanson (Kiyev) reported on the present state of research in the field of colloid metals. A. D. Shpludko (Bulgaria) determined theoretically and experimentally the regularities of synaeresis in foams. M. P. Vollarovich w-ith collaborators spoke about the results of examination of water properties and structure of peat by means of radioactive isotopes. M. Ye. Shishniashvili considered questions of adsorption and chemosorption of electrolytes in colloid dispersion systems. B. V. Deryagin and his collaborators reported on the develop- ment of the electrostatic stability theory as well as the coagulation of dispersion systems, and on the theory of formation and the properties of aerosols. L. Ya. Kremnev, A. B. Taubman reported on the role of the structural-mechanical barrier-as a factor of practical Card 3/6 guarantee for a full stabilization of dispersion systems, Naw Trends of Colloid Chemistry SOV/30-59-1-5/57 as P. A. Rebinder showed it in his-investigations (Ref 1). V. G. Levich theoretically showed that an increased viscosity of the protective coverings of the stabilizer is sufficient to prevent a -coagulation of particles. M. M. Dubinin and his pupils dedicated a series of reports to examinations in the field of structural characteristics. A. N. Frumkin with collaborators examined new appearances of adsorDtion in the theory of electrode processes. B. A. Dogadkin, A. Ya. Korolev discussed questions of adsorp- tive interaction of active fillers with p olymers, as well as of the chemical modification of the surfaces of solid partic- les (soot). Ye. Ye. Segalova, P. A. Rebinder and collaborators reported on the clarification of the process-of formation of crystallizat- ion structure in the hardening of mineral binding agents. G. M, Bartenev showed that the appearance of high elasticity is connected with the formation of dispersion structure. L. S. Palatnik (Kharlkov) examined the colloidal state of agin,g alloys in thin films and massive samples., Ye. D. Shchukin, V. V. Yudina clarified the theoretical criteria Card 4/ 6 of spontaneous dispersion of solid bodies, especially metals, New Trends of Colloid Chemistry SOV/30-59-1-5/57 in surface-active surroundings. V. I. Likhtman reported on the appearance of adsorptive plastification of lead and tin at normal temperatures., L. A. Kozarovitskiy and collaborators examined the influence of rheological properties of printing colors on their behavior in the printing process. I. N. Vlodavets reported on the regulation of crystallization and coagulation structures in the production of best table- butter. V. A. Kargin, Z. Ya. Berestneva described the synthesis of aluminum-silicon jelly of crystalline structure. V. N. Tsvetkov et al. examined the optical properties of macromol.ecular solutions and their structural peculiarities. B'. A. Dogadkin and collaborators reported on questions of compatibility of polymers and their solutions. V. A. Kargin, P. I. Zubov and collaborators discussed the process of gelatin formation and its role in sticking processes. S. M. Lipatov,,S. I. Meyerson referred to the coincidental results of thermochemical And dilatometrical examination Card 5/6 methods of the transition of gelatine jelly into'a liquid New Trends of Colloid Chemistry SOV/30-59-1-5/57 solution at a rise in temperature. A. I, Yurzhenko and collaborators (LIvov), P. M. Khomikovskiy reported on the clarification of polymerization processes in the state of dispersion. B. Ya. Yampol I skiyWU Shn-chliu, S. S. Voyutskiy, A. P. Pisa- renko and collaborators examined the process of the influence of active fillers on the processes of structural formation of polymers. A. V. Dumanskiy with his school, A. A. Trapeznikov, G. V. Vir.ogradov and collaborators examined the properties of soap solutions in connection with their structural peculiarities and the theory of consistent lubricants. The reports on questions of dispersion systems in polymers showed the utility of a combination of problems of colloid chemistry and the physical chemistry of polymers. The results of the Conference indicate that, besides limited consultations on individual scientific problems, comprehensive congresses are also useful and necessary, uniting the investigators and comprising the results of achievements in wide fields of science. There is 1 Soviet reference-. 616 I f 15(o) SOV/29-59-3-7/23 -AUTHOR: Rebinder, P. A., Academician TITLE: On the Threshold of Three Sciences (Na etyke trekh nauk) PERIODICAL: Tekhnika molodezhi, 1959, Nr 3, p 13 (USSR) ABSTRACT: The author of this article, Academician Petr Aleksandrovich Rebinder, has dedicated many years of his life to research work in the field of physical and colloid chemistry. His principal works deal with the investigation of surface layers on the bound- ary surface between solids and liquids. Rebinder and his co- operators opened a new neighboring field of science, named physico-chemical mechanics. The new science makes it possible to give desired properties to sAbstances produced on the basis of polymers. In this article Rebinder writes that the near future is unthinkable without new technical methods and new materials. A large number of technical fields requires substances with definite properties, such as space travelling, building trade, aircraft construction, ship-building, the motor-vehicle and ma- chine-building industry, etc. This indicates that metals will lose their leading position as construction material, which Card 1/2 does not mean, however, that they will be superfluous. They will Page of Open Letters SOV/29-59-3-6/23 in many articles that people who have lost their way cannot go straight on but move always in circles. That seems mysterious to me. Answer: This phenomenon is not only observed in man. It was found that blindfold dogs also move in circles and the same holds for infusoria. That is, however, nothing mysterious as it results from the geometrical asymmetry of the body and the irregular de- velopment of muscles. 3) R- Haspilov, Veselinovo,Nikolayevskays oblast', asks: How is a looping calculated? Answer; The circus performance called looping is based on a known mechanical law. The motorcycle or the car are pressed against the wall by the centrifugal force, which is caused by the motion of a body on a curved line at a certain minimum speed. The quantity of centri- fugal force is computed by the formula F - mv2 Card 2/2 KOCHANOTX, L.A.; LIKHTM.!tN, V.I.; REBTIMER, P.A. - Effect of fusible metal melf-s-oa the: im"e0ch'anical properties of single crystals of higher melting metals. Biul. Inst. metaloker. i spets. splav. AN URSH. no. 4:72-78 '59. (MIRA 13:11) (Metal crystals--Thermal properties) REBINDER, P., akademik Promising branch of science. IzobrA rats. no-7:3-5 il 159. (U.-L-RA 12:11) (Tecbnolog7) sov/126-8-.2-19/26 AUTHORS. Kochanova, L.A., Likhtman, V.I. and-Rebinder, P.A. TITLE. Influence of Low Melting-point Fused Metal on the Mechanical Properties of Monocrystals of Higher Melting- point Metals PERIODICAL: Fizlka metallov i metallovedeniye, 1959, Vol 8, Nr 2, pp 288 - 293 (USSR) ABSTRACT: Single crystals of zinc (99.990/0 and cadmium (99.9pg%) were used in fused tin and lead. Samples were deformed at 10-150% per minute with a temperature constant to + 5 OC. The metallic medium (Sn or Pb) was deposited in the sample electrolytically (thickness 5 0, which was then placed in a tube with powdered graphite to pre-vent oxidation, Figure 1 shows true stress-strain dialgrams for pure zinc and zinc with a coating of tin. At room temperature the influence of tin is small but at hIgher temperatures tin causes a decrease in strength and plasticity. The relation between temperature and magnitude of the effect of tin is shown in Figure 2. The sharp increase in effect at 300 - 4oo 0C is connected Cardl/3 with an increase in solubility of zinc in -tin, The SOV/126-8-2-19/26 Influence of Low Melting.-point Fused Metal on the Mechanical Properties of Mcnocrystal's of Higher M_dl. Ming--- point Metals character of the fracture also changes froin plastic in air to brittle in tin. Lead-Ain m:Lxt-,Lres were also used. The effect of pure lead is very slight but with increase of tin content in the lead up to 200%, there is a sharp decrease in strength and plasticity of zinc (Figure 3). With fur-tkiex- Inc.-cease of tin content, the effect is much slighter. it was shown that if zinz~ coated wita tin is held in lead at 4oo OC for long priods, the stiength of the zinc recovers (Figure 4). This shows the absent.~e of any marked diffusion of tin in zinc,. A decrease in plasticity and strength of cadmium in tin was also found (Figures 5,6). The results on single crystals show that the decrease in strength is not connected with any grain- boundary effect. There are 6 figures and 21 references, of -;,ihich 12 are English and 9 Soviet. Card2/3 so 126-8-2-il/26 I Influence of Low Meltlng-polnt FuseYMetal on he Mechanical Properties of Monocrystals of Higher Melting-point Metals ASSOCIATION; Institut fizicheskoy khimiiAN SSSR (Institute of Physical Chemistry of the Ac.Sc., USSR) SUBMITTED: October 15, 1957 Card 3/3 5(4) _70V/610-21-2-12/22 A-UTHOR: LoUginov, G.I., 4PPin4er.,P_.A. and Abroserd-ova, V.F. - , ~ -: - " il TITLEs The Interaction at Ordinary Temperatures of Calcium Hydroxide -'kith Sand of Various Degrees of Dispersity _17ERIO-DiCAL: Koiloidnyy zhurnal, 1959, Vol XXI, 14'r 4, PP 442-448 (U33R) AB_1*T_iACT: This is a study of the interaction of calcium hydroxide with sand in aaueous solution. The exioeriments were carried out with the aid of isotope Ca45, us-ed in the form of Ca*(OH) ' 2 The binding kinetics of the lime were studied with the chemi- cal methods employed for the determination of free CaO. Object of the irvestigation was sand (quartz sand) of the Vollsk de- _ posit of different dispersi tY2 (specific surface S ). The dis- values persity varied from 3 0.11 M Ig (natural state) 10 S 2/g(finely 1 equ,-.1 to 0.62; 0-95; L6 and 5.4 m ground). The experiments, which continued for 6 months, were carried out at a temperature of 170 +_ 10 C. Figure I (graph) illustrates the bindinj I - kinetics of calcium ions from a saturated Ca (OH ) Card 1/4 2 -3olution with sand of the above-mentioned S 1 values. The -07/;-Sq-21-4-12/22 The interaction at Ordinary Tcmperatures of Calcium Hydroxide ~.Iith Sand of Various Degre-.---s of Dispersity curves show that independently of the dispersity of the sand, the binding process always consist's of two stages: 1) chemisor- ption, which ends within one hour after the start of the inter- actton, z.,.nd 2) a very long period of ohemical binding of CaO at constant rates. The second process, evidently, is connected with the formation of calcium hydrosilicate, the latter being a new p'lase crystallized from the gradually formed supersatu- rated solution. According to 1-13. Lrasill_.nikov, this process will 'inally result in the full binding of CaG in the hydro- I U silicate, which corresponds to a final concentration of^-/0.006 t- 1, i.e. to a hydrolytic equilibrium of 'the calcium silicate 3/ in 'the solution. In the case of conce--qtra~ed suspensions, this process results in tthe development of a solid crystalline hydro- silicate structure '--rt~ference 112, as is shown by the aut-ors' e.--'-ne!imen'U.3 with small solid blocks of binder. The specific ourface of finely ground sand was determined on the Card 2/4 basis of adsorption at low temperatu--r-e. The medium value2 for '~C'V/69-21-4-12/22 The Tn'eraction at Ordinary Temperature,- of Calcium Hydroxide 3--nd Of Various Degrees of Dispersity. ea-uh dioperoity served for the calculation of the space occu- pied by a CaO molecule (table 1) The medium value so) 3-~ this s-oace was found to be 10 .2 On the basis of the meditua Value S , and the value of CaO sorption, the authors also calculaYed the values S 1 of coarsely-dispersed sand, whic-a cannot be determined on the basis of nitroaen adsorption. Both methods.i.e. -the method of nvestigating the CaO binding process ,aith the aid of isotope Ca4~ and the method of determining the active snecific surface of sand through chemisorption of the same isotope, permit determination of the surf-ance of sands of any disper,-ity. Low-temperature ad~iorption of nitrogen Ferves only for the deteriaination of the surface of highly-dispersed '--ands M maininr~ par 21g). The re ' i t of the study can 'be summar- ized as follows. The dependence of the rate of CaO binding on the dispersity of sand is subject to the equation of the semicubi- Card 3/4 cal Darabola (fiGure 2). The hardening of lime-silica binders 3ZOV/60-21-4-12/22 Tile Interaction at Ordinary Temperatures of Calcium Hydroxide 'With Sand of Various Degrees of Dispersity. can be intensified (by 501'to) by activation processes, i.e. by passinE the limesilica binder through a vibromill. The discovery of the mechanism of CaO binding opens new techno- logical possibilities to increase the strength of lime- silica products by adding substances, which increase the rate of dissolving of silica in water. In addition to the above- mentioned scientist, the authors mention D.S.Sominskiy and G.S. Khodakov. There are 4 tables, 3 graphs and 16 references, 14 of which are Soviet and 2 English. AS~`OCILATIO_H: Institut fizicheskoy khimii AN SSSR, IMoskva (Institute of Physical Chemistry of the AS USSR? lJoscow) __'UB1.`.TTEZ)s 15 November, 1958 Card 4/4 ( A 1 , ?4(2) SOV/20-124-4-41/67 5 AUTAORS: Segalova, Ye. Ye., Tulovskaya, ZZ. D., Amelinag Ye. A., Rebinder, P. A., Academician TITLE. Causes of the Loss ofStrength of the Monocalcium, Aluminate Crystal Structure Formed at High Temperature (U prichinakh 3nizheniya prochnosti kristallizatsionnoy struktury monolalltaiyevogo alyuminata, obrazuyushcheysya pri povyahennoy temperature) PERIODICAL: Doklady Akademii nauk SSSR, 10591 Vol 124, Nr 4, PP 876-879 (USSR) ABSTRACT: A short report is first given on the present stage of the problem and on earlier papers dealing with this subject. The formation of a crystallization structure of reduced strength and higher temperature is not due to the formation of another compound, but to a modification of the conditions of the crystallizing-out of the hydrate forming these com- pounds. The authors investigated the kinetics of oversatura- tions by employing the conductometric method at an optimum rate of mixing (400 rpm). In order to prevent carbonization of suspensions, all measurements were carried out in a nitro- Card 1/4 gen atmosphere. In all sufficiently concentrated suspensions 30V/20-12ij-4-41/67 Causes ef the of Strength -;f Ue M,_)rv::-,al-:iuM ADLT11nate "--YE-tal Structure Formed at High Temperatures a constant level of electric conductivity is established, which corresponds to the maximum oversaturation. or to the conditioned solubility of CA (an abbreviation used by the authors for CaO.Al20 ). In suspensions of CA a constant level of oversaturatlon is more quickly attained than in tricalcium-aluminate suspensions, but it is still attained much more slo7wly than in suspensions of semi-aaueous gypsum. The rate at which maximum oversaturation isattained increases considerably with an increa:3e of the concentration of the susoensions. The existence of stable oversaturations which are independent of the concentration of the suspension is also indicated by the results obtained by the quantitative determination of the concentrations of CaO and A12 03 of the liquid phasip of the suspension,provided that electric con- ductivity in this liquid phase has attained its maximum value. The samples used for analysis were chosen from the same suspen3i'bn in which electric conductivity had been measured. The results obtained by analyses made it possible not only to determine the existence of stable oversaturations Card 2/4 in the CA-suspensions, but also to characterize them quanti- - - .1307~20-124-4-41167 of ~ e Monocalcltn _abases of tLe joss of Strength th ,rystp_l Str,,Icture Formed' at Hi a-, Temperatures tatively. Accordin,-, to the results obtained by the present paper CA is con,-,ruently solved: A concentration ratio of CaO and Al 203 in tl~.n_ liquid phase of the suspension is equal to 1, which corresponds to their ratio in the arid compound. At the same time, the solubility of the hydrate 2 CaO.Al 0 2 aqu (C 2A.aqu) was determined, which was produced by.the 0 hydration of CA at 20 . It amounted to 0-4/0 9 C2 A per 1 1 of the solution, which is in good agreement with the data 0 found in publications (Ref 8). The concentration ratio of CaO and Al 203 corresponds to the dicalcium aluminate (CaO/Al 2030~ 2). The authors carried out similar experiments also at 60 The curves for the variation of electric con-- ductivity also have a distinct maximum, which increases con- siderably with an increase in concentration of the suspension, and which becomes noticeable already after a shorter time. Card 3/4 In order to be able to determine the amoiint of stable over- h SOV/20-124-4--41/67 causes of the L.Oss Of Cf t e MP C~ a- A)_Lra_i~riate Ci7sta` Str-i.!~_- at Te er t, u saturation it is necessary considerably to reduce the rate at which CA is dissolved, without hereby varying the experi- mental temDerature. For this purpose a surface-active sub- stance was0added to the suspension, viz. sulfite-alcohol-draff. Also at 60 stable oversaturations occur by the hydration of j CA. The maximum value of concentrations does not depend on the concentration of the suspensions, but it is attained more quickly at higher concentrations. There are 3 figures, I table, and 11 references, 8 of which are Soviet. ASSOCIATION: Kafedra kolloidnoy khimii lJoskovskogo Fosrdarstvennogo uni- versiteta im. IA. V. Lomonosova (Chair for Colloid-Chemistry of Moscow State University imeni M, V. Lomonosov) SUBMITTED: October 15, 1958 Card 4/4 5W AUTHORS: Belugina, G. V., Zakiyeva, S. Kh., SOV/20-126-2-25/64 Rebinder, P. A., Academician, Taubman, A. B. TITLE: On the Stability and Viscosity of Concentrated Suspensions in the Oleogels of Metallic Soaps (Ob ustoychivosti i vyazkosti kontsentrirovannykh suspenziy v oleogelyakh metallicheskikh myl) PERIODICAL: Doklady Akademii nauk SSSR, 1959, Vol 126, Nr 2, PP 316-321 (USSR) ABSTRACT: In the course of the investigations discusued in the present paper the aluminum soaps of naphthenic acids were used as structure-forming additions. They form oleogels with peculiar structurally mechanical properties. These properties of oleogels depend on the molecular nature of the dispersive medium and may be regulated by variation of these factors. In this connection, the authors investigated the time- -dependence of the viscosity of the gels of aluminum naphthenate in hydrocarbon media and in concentrated suspensions which are built up on the basis of such hydrocarbon media. Ordinary technical suriace-hardened oxidized aluminum Card 1/3 powder with particles of aluminum powder from 6 to 13 IP. served On the Stability and Viscosity of Concentrated SOV/20-126-2-25/64 Suspensions in the Oleogels of Metallic Soaps as dispersive phase. The dispersion medium used was the purified basic paraffin-naphthene fraction of the fuel T - 1. The production of the aluminum soaps used for structure-formation is briefly described. A diagram shows the typical curves lg1L-1V for a 2% aluminum-naphthenate-Eel- Here T, denotes viscosity and -6 - time. The introduction of a solid phase increases initial viscosity considerably, but without changina the character of its aging. Analogous curves of aging are given for 2%- and 4%-gels of an aluminum-naphthenalle of other composition. If benzene is substituted for the paraffin-naphthene fraction, the initial viscosity of the gel is reduced, but the viscosity of the gel in the suspension undergoes practically no change for the duration of one month. The eecrease of viscosity in the oleogels of the aluminum-naphthenate and in the corresponding suspensions is probably a consequence of the latent formation of aggregates. There are 2 figures, 1 table, and 10 references, 9 of which are Soviet. Card 2/3 On the Stability and Viscosity of Concentrated SOV/20-126-2-25/64 Susuensions in the Oleogels of Metallic Soaps ASSOCIATION: Institut fizicheskoy khimii Akademii nauk SSSR (Institute for Physical Chemistry of the Academy of Sciences, USSR) SUBMITTED: February 26, 1959 Card 3/3 AUTEORS, coryunov, Yu. V., Pertsov, 11. V., SO V/2 0- ', 2 7- 5 /6 0 .2 -.4 rICI -- -d C i --.n _e P A , Acadei.- TITLE',~ of Strp-rigth b, Adsorption and Byitflp Failure I:f Ztric a-ld Cadmium Singb~ Crystals PERIODICAL~ Dc-',< la!_%, Akademii naW-- SSSR, 1199 01, W-1 1 2714 70 4-7S'; (USSR) ABSTRACT~ The au4.hors had already ascertained (1?.efs rliat als: Plastic bodies c-an b? destroyed under the influmr..-_ -,f' hilgh1y adsorben', metals; the metals forim fine liquid inclus-iOns _JrA the plastic 'body. In t-he present paper, this process is .c.y means of Zn- and Cd-single cr,~rstalz; gallil~_m f.---- T-Ine Q, _-~Tmation o-~' Inclusions. T11he gall-lum zras precipf"atc-d c~n .so . A solu,4 1, ~xystals as a th4n filr thz~ o n ~- fh g -a -_ 1 i;he .-rystals was impossible under the eXiSting. C.,nZ..en4- -cal., -,.r. condit. lons. The destruction of the single crys-ts-'s was si 1 C.a~sd at various initial orientations of the glide plane-&. T'h~ .:7ryetals wpre stretched at a constant el~,ngat`:;r. rate. Tne r.:rystals treated with gaiii-m were subjected tc, "his Card and showed a reduct-ion in density, and were dest_~_-:,yel --':, a1l I--.- Adscrption and BrIttle SOV/20--i"i-4-75/60 Sti I zaii,jre .-)f and Calm-tum Single Crystals 1. thus forming basal gi-de plan's. ~jrLentations Jirvest.lgated, L L- ~ - Figures 1 and 2 show the results of the investigations. The law of the constancy of the normal stress at -z frazr'~-;_-e was not abserved. Likhtman, Kochancva, and Bryulkhanova had I)-.)inted out th.s fa-,;t (Ref 5). The law of Likhtman and SK""I"Jukin (pef 6) was observod, which assumes the constancy of ~h,? dcrkratton of tho norme.1 and shearing stress. The effa,~t of the gallium is based on -Its high surface activity. A mocharlilam, :~f the formation of inclus-ions is indicated. Thez-e are f-.gures and 7 Sov:*et references. ASSOCIATIO11z Kafedra kolloidnoy kh-I'mi-i Yoskovskorgo gosudarstver-nogo .1ni-rersi-':--+a -4m. M. V. Lomoxiosova ("'hair of Colloid Chemist-u hlos,:r-~w State UniversLty imen-1. M. V. Loacwso7l, S TI- R-1 ITT E DMlay 2,z, 19~11' r1ard 5W 1 - * SOV/20-127-5-38/58 AUTHORS, Khodakov, G. S.9 Rebinder, P.A.; Academician . ...... .....I TITLE: The Investigation of t-he Fine Dispersion of Quartz and of the Influence of Added Liquids Upon This Procese PERIODICAL: Doklady Akademi4- nauk SSSRv 1959, Vol 127, Nr 5, pp 1070-1073 (USSR) ABSTRACT: The effect produced by acetone, ethyl alcoholy water, benzenes triethanolamine and oleic acid upon the dispersion of quartz sand was investigated. Crushing was carried out in a laboratory vibration mill, and determination of the degree cf dispersioll by measuring the specific surface by means of adsorption of nitrogen at low temperatures a--cording to reference 14- Fig- ures 1-4 and tables '1.and 2 show the experimental results. The addition of liquids causes a considerable increase of the specific surface in comparison to dry-grinding. The effect produced by the individual liquids is about equal. This result is explained by the fact that, in the case of dry grinding, relatively solid particle complexes are produced, the tight packing of which prevents nitrogen from penetrating, so that a large part of the free'surface is eliminated. Additions of Card 1/2 liouids cause a considerable extent, of desaggregation. As SOV/20-127-5-38/58 The Investigation of the Fine Dispersion of Quartz and of the Influence of Added Liquids Upon This Process shown by figure 3, desaggregation. depends upon the quantity of the liouid added. In water, a minimum occurs at an addition of 2-30%, which is followed, as a result of further additions, by a rapid increase of desaggregation. As shown by experiments, the described phenomena are confined not only to quartz alone, but in a different degree characteristic also of other solid substances, such as corundum, and calcite. There are 4 figuresp 2 tables, and 19 referencesq 14 of which are Soviet. ASSOCIATION: Vsesoyuznyy nauchno-issledovatelvskiy institut tonkogo izmeli- cheniya Akademii stroitel'st-va i arkhitektury SSSR (All-Union Scientific Research Institute for Fine Grinding of the Academy of Building and Architecture, USSR). Institut fizicheskoy khimii kkademii nauk SSSR (Institute of Physical Chemistry of the Academy of Sciences, USSR) SUBMITTED: May 22, ';959 Card 2/2 '26 24(2~, 18(6) S OV/2o - 5-2-13/59 AUTHORS: Goryunov, Yu. V., Pertsov, N. V., Shchukin, Ye. D., Rebinder, P. A., Academician TITLE: Variation in the Structural and filechanical Properties of the Single Crystals of Tin Under the Influence of a Strongly Ad- sorptionactive Medium PERIODICAL: Daklady Akademii nauk SSSR, 1959, Vol 128, Nr 2, pp 269 - 272 (USSR) ABSTRACT: This article deals with the influence exercised by a thin li- quid gallium film upon 'the mechanical and structural properties of the single crystals of tin and upon their electrical con- ductivity. Differently oriented single crystals of tin (degree of purity 99.999 %, diameter 0.5 - 1 mm, length 10-25 mm) were bred by the method of zone crystallization. The liquid me- tallic gallium was mechanically applied to the surface of the samples in a quantity of from tenths of a mill1gram to 5-10 mg. As in the case of Zn-Hg and other pairs mentioned al- ready earlier, plasticity and strength of the single crystals of tin decrease abruptly as soon as the gallium has been Card 1/4 applied to the samol'e surface. However, they decrease even Variation in the Structural and Mechanical Properties SOV/2o-128-2-113/59 of the Single Crystals of Tin Under the influence 3f a Stroncly .1-dsorption- active "Iedium more in the course of time. After a -few days, the sample _Js pu'-,rerized by the pressure of a finger-nail. A diagram strates the results obtained by measurement of the true tensicr-s of the break resulting from an elongation of -.he gallium- coated single crystals of tin at a constant velocity ofrJ20'Yo min-1 as a function of the period of time passed since the coating of the samples with gallium. The extreme relative pro- longations increased by 50L/,,) (as a maxi:xuir. value') immediatel,-!-- after the samples had been coated with gallium. This perrentage dropped to some per cent after the sampleshad beer, exposed 1, ~o room temperature for 24 hours, and after some days _JI. was only very small. The strength of single crystals coated with gallium amounts to 1-5 kg/ m2 approximately iminediately after the coating, and drops to 50 g 2 after 7-10 days. X-ray Q. Irrim - Pictures taken before and after the coating showed that after the coating the single crystal gradually decomposes into di- stinctly disoriented blocks. After some days the initial sta2.ns on the X-ray picture vanish almost completely, and the picture resembles that of a polycrystalline metal. At a sufficient Card 2/4 quantity of gallium and sufficiently long action of 'the Variation in "he Str.ctural and Mechanical Properties SOV/2o-128.-2-13/c;9 o~f the Siz,gle Crystals of Tin Under the Influence of a Strongly A-deorptior.- active :~Iedium latter on the single crystal of tin, this phenomenon extends throughout the entire crystal volume. In the case of samples oriented in such a manner that their original resistance is only small (i.e. at large angles ), between the tet-ragonal 0 [00~ axis and the sample axis), resistance increases in the course of time, while it gradually drops after the coating of samples with high original resistance (if the tuetragonal axis is near 'the sample axis). Gallium (or gallium saturated with tin) is a strong adsorbent for tin. During elongation in liquid nitrogen the strength of samples coated with gallium really increases as.compared to single crystals without coating. The authors thank Professor V. I. Likhtman, who contributed to a discussion of the results of this article. There are 4 figures, 2 tables, and 27 references, 26 of which are Soviet. Card 3/4 Variation in the Structural find Mechanical Properties SOV/2o-128-2-113/99 of the Single Crystals of Tin Under the Inf',L:ence of a Strongly Adsorption- active "'.'_edium ASSOCIATION: Otdel dispersnykh sistem Instituta f-Lzicheskoy khir.-i-L Akademji nauk SSSR (Institute for Disperse Systems of the Institute of Physical Chemistry of the Academy of Sciences, USSR)Kafedra kolloidnoy khimii Moskovskogo gosudarstvennogc universiteta. 0 ~-i. M, V. Lomonosova (Chair of Colloid Chemistry of Moscow State University imeni M. V. Lomonosov) S U B11, I I T 11 E'D June 5, 1959 Card 4/4 T 5W SOV/20-.129-6-40/69 AUTHORS: Segalovaq Ye. Ye., Kontorovich, S. I., Rebinder, P. A,, Acad- emician TITLE: Features of Structural Crystallization in the Solidification of Calcium Oxide by Hydration PERIODICAL: Doklady Akademii nauk SSSR, 1959, Vol 129, Nr 6j PP 1343-13406 (USSR) ABSTRACT: The authors investigated the process of CaO hydration on sus- pensions which, besides CaO additionally contained 75'-,- CaCO ~ as inert filling medium, so that the ratio between water an calcium was increased and structural development could be re- tarded and heating of the samples could be reduced. The pure 2 CaCO had a specific surface of 2000 cm /g, determined by 3 Tovarov's apparatus. The strength of the suspensions was deter" mined by means of a conical plastometer, and the rate of hydra - tion was determined calorimetrically, Figure 1 and table 1 show the course of the strength and hydration of suspensions with a ratio between water and solid subs tarice 07/0)0f 0,4, 0,5, and 0.6, Strength at first increases rapidly as a result of crystalliza- tion of the main quantity of Ca(OH) V after which it decreases rapidly and only rises gradually with 'W/S = 0.4 until the end Card 1/2 of hydration, as was also observed by G~ I. Logginov (Ref 6). SOV/20-129-06-40/69 Features of Structural Crystallization in the Solidification of Calcium Oxide by Hydration Figure 2 shows that the course of strength does not depend on temperature conditions. As a cause of these variations of strerLcldip the destruction of structure by the occurrence of internal stresses during the growth of the crystals is given. The double character of this process (increase of strength by crystal growth, decrease by destruction of structure) causes the rise and fall of the strength curve, which is particularly marked with VI/S = 0.4. On the other hand, the dissolution of crystal- lization contacts becomes effective only in the case of a large W/S. The assumption of several Ca(OH) 2 modifications going over into one another was refuted by thermograms and X-ray pictures.- 0. V. Pyasetskaya collaborated. There are 2 figures, 1 table, and 9 Soviet references. .ASC-OCIATION: institut fizicheskoy khimii Akademii nauk SSSR (Institute of Physical Chemistry of the Academy of Sciences, USSR), Yafedra kolloidnoy khimii 111oskovskogo gosudarstvennogo universitueta im. 1-1. V. Lomonosova (Chair for Colloidal ChemistrY of Iioscor, State University imeni IT& V. Lomonosov) SUBMITTED: July 31, 1959 Card 2/2 VEYLKR, S.Ya.; LIKETHAN, V.I.; REBINIIXR, P.A., akademik, (Effect of lubrication in the press forging of metals] smazok pri obiabotke metallov davleniem. Moskva, nauk SSSR, 196o. 231 p. (Forging) (Ketalworking lubricants) otv.red.. I Deistvie Izd-vo Akad. (MIRA 13:8) 4 -P-It Pm--.~d t -*,, -.t of "IwomtLcdl %rd 'App.led M'chanw, H--, 27 J- - ..- F,b Z34. _I~h FhvAtnow 0~:Ll I L.,x. 4.fl.,U- of -Int-ced ylldrll b. I a3l. Up--rbi-stok (X.-), ru. 0. Fb.tnoe 7 ttwlth- or tartt. 41."- 236. A-l~ ' I-= Wd,sm)l. Flo, -sclidstloo or -4- t. se of -M torce 7 237. YU. C-P. 'r, 233. F`spp.V-"t-jr4lM). 3- Wlbl- In the Melly of .I&Walty me S..L4. of -I& r-detton.. R. It. Replopes,, (Lmlwed). Soo, Wt.- soustl~ of atuet-, Ows:.). 0. Mo Fopsg.nom ot .1..U- 01. U holf-sp.- 21sl. Sh. A. Rkrm&t"!m (Monm). Propal,Uo4 W dlstu~~oss to tt- sodS.s. ".2. fl.UW. r.t".W 2%3. T. L livist- CbestLooel), Cks the P-4 of & .4 tto rt. L. oo~ ... .. :.;.- I 2". (h t2. brl-. of tho -L- P"t~j stree'. ess the ratt4w "ret4th. 31out, 06*4owls nm P'll"Um 'tho sothm at b- 1=6 solmtl~ to sues, 9-dLmsosloosl Pokles's of me or I&st4clt7. - 2-1. &. 2. aLbooluLo (A-) I ~,smm throo-IL-L-1 Ploblese C UMIS .4',jjjzn- to VULA, '".U. 441W.. M. 1. r. a. .;Vu..-.. .0 the to ~U-L--. ..I tbo-T of a. t. mosmku W-A'"ty-W- &- P-bl- of the sp-tar th-r se Cy-2. '0. X-r-t- (94-4m), :~~Iv of trgk post". "%& t-seatrl study of the A.U-:' 252. N14 "Ov. Mzoo)' r- 4.wrolastion of the . = . w . _Sedso 4"_lssUots.pporLs4 let. b? Me -0.4 of 2n. V. 31_06= of -LBoctoptc prlmtlo So, . or s4 ... U-. 214. (fo~'ad)' Th. L.P.,% of . dou~sl. V-" 't- 2". 1-T -1 Th. .. of -tielly .-to ... U- its, to, La mo 4.:L,. or Ails by -H M. 2$6. SlobUlty a CoLl%lIr 6~-A (ft-), S-L~l of w 257. italso soppersest -by sm~ el&~Ue Layer or r=". -J:.L" so, 25a. 7W. bes4Lot of pla~ll I.W 259. A. F. Itoltalt Mo.-). a be- am . -loyer toLf Ps. wymmi-o~'IATUt U&I S. 2(A. 'VI. Mt~ ). of creep A of sot-ted solle M. X. 0. altueosel (~'-) Dto-toa' ot- puts. of =:Wl odsS I= neq-t.. 262. Drosal. problems oC Me d..Ia roumistion,s und'r L.Pkc oo4s. 263.N S. 9. Molt" (Loolmnat colutim of soess dy~slo proble- .rmftw., ii-tux's, by the sethod of L.Itw W-W.. PI-61- of too M 24%. V -Y .Ity A sell shem. 5 ). a . . . Los. of .-I-tl ft'l" problow Lr plastl4lq. 2". X The ;rt:.ot of Latorml rrictLm be. " 1. -4- Szt6essess (P-41"410 el" soof I& owsoot", disell. 1-tf to Lets-I P. A YbCj A U - 7-710P. S IT 32803 S/ 1 1, ~-00/10 12/124/149 101 31---harrIn, Ye.D, K---hanova, L,A,, -i,&. mA of of zxa~l surface a--- or, a-d streng-h proper-,les of single c t m(- D z~nunrlttl. Me --rg-'Ya, 112~ 1961, 34-35, abstract 'L-',z. rn-%all-~v, AN SSER'? . 1960, n,,. -.:>,3, 147-161) Exce-rir~,n-~a wn~- m--Lds crIer-4;-a Zri and Cd s:Lngle ary~-,.els -.f 1 mr ,n wi~;h e~ I*hirj. fl of sirface act, Sn and -,-z -shown tna- 9~1 T off llba2c- mr--tal-co cat ing" E--U t-6 C. lt,6 Cf mc-~a'.1dyer atrongly reduces defc,-rrjab'---;I-,-y ard a:".U fallure, The -r-ri-Itle effef.~ .~f ~ne of teemrerature and 4:nr-- re-lrl-lc-l are n,-,I. connected arr,~- c~ij-zed :.-v ?L fe:rea='~ of -tte -4crk whl3h is f-,- da,~ ~~ -.he. Cf s-.L-face- Cara I 1--D 32 803 1/6 1., ~MO/O 12/124/149 A /A 1C, 1 T-.--'*Or:-E.!r-fa~QS, Al~ a dr:ip af tvi6 test tem. Feral~ure ,,~-I:w 7-~ of -h~ -a!Fe .,re 'e,-.nbrI-;--Ing effect the a r,~ju7~5t of Eltoms. Mne a~' ~zc, %- t~-,ff h1gr. an-I low tr-nal n whi!-,n cf and local L Y, s trf~- soe F ve,:~ ~ A. f a-- I e 1 ',0 dC-, Te ;.0; !Tl-,C dangercue even at ~e e- "Ilk A-2e. r f free s-,;rf iL-e ene rgy . rh--n3 a-re 21 references. V, SI-C-T'L-ICv FAb--- tra,:, a no -7-oTr~Lm',- I ,- a r R ,EBIITDER., P.A.., akademik; ~3ERB-SERBIIIA, U.N., kand.khim.nauk; UTROV, S.N.., - -- dotsent M.N. Shkabarals [doktor geol.-mineral.nauk] book "Drilling and grout- ing fluids in drilling mine shafts" and A.A. Linevskii's r'evie-w of it. Shakdit. stroi. 4 no. 5:30-31 MY 160. (I.IIRA 14-4) (Shaft sinking) (Drilli fluids) (Shkabara, MIN.T SEMIPMt, Yo.Yeo, kand.k-him.nauk; ITIMIMER, P.A., akademik ---- - --- Modprn physical and chemical representation of hardening procosses in mineral binding maicrials. Stroi.oat. 6 no.1:2.1-26 Ja 160. (141RA 13:5) (Binding materials)