SCIENTIFIC ABSTRACT NESHEV, I. - NESHPOR, V.S.

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SCIENTIFIC ABSTRACT
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Nasm, 1. Short-wave attachment to the ordinary receiver. p. 20. RADIO. Vol- 5, no. 1. 1956 Sofiia, Bulgaria SOURCE: East European Accessions List (EFAL) Library of Congress, Vol. 6, No. 1, January 1957 17' 0,',--r cal Frodacts an(! ar, Fr)(-,ri Indii tr7 NO. 19601 2875 -r aug yjej~l of Neat in S.L -1-iter of Sheep rund Goa's 19'8, 7, No 2, 23-21-5 1 f 1,jTP, Mrillarilt. pro t,,irN5Tr,,ACT Trae YiO2.Cl of r-ricat com.-pared the live weicht --,a B a ICr-,,de3) a-nd 3,6 of 1,!~211. sh A C, ,,-Oats 3 rvados) waa It es mtablislhad th,-,.t Itho yield, of mutton (avrrace a-ccord-Ir.'r to G-rados, ill go' t 1,,-i.26, 3c/.49 and 37-74, and tko yiel(~ of a 44-15 and 39.64, respectively.- C 4~ -~,r H-146 KMUqT*j RESEU jord Apropos of morbidity with.tamporary loss of work capacity among Higher Kedical Institute workers. Bauch* tro viesh, ned. inst. ScCia 42 no*3971-82 %I* 1e Predetavena ot prof* d-r. A.Pknevt rukoveditel na, TAtedrata po organimtsiia na zdraveopazvansto L istorila na. meditaina- ta, Visohmed. inat., Saftia. BESHEV S VESHEV, S. Planning the plant and livestock breeding production. P-4. vol. il, no. 8. Aug. 1956 KOOPERATIVNO ZDSDELIE -&GRICULTURE SOMEL, Hulgarl% SO: East European Accession, Vol. 6. No. 3, March 1957 SIHOV, D.; SPASOVA, M,; SIHOVA, Sk.; ==A, Iv. ~,- -17 a -- I Tbo N-acylation in the phenothiazins oup. Pt. 1. Godishaik kWm 53 no.3:87-97 258/159 Epubl. 159f. Abe Jourt Rof Zhur-Biol., No 8, 1958, 36861. Author , Noshidalova, R., 11 llowirt, J., Skorpil, V. Ins t Titlo :Tho Significanco of Glutaminic Acid in tho Norvous &Ystam. Orig Pub: Coskool. psychiatr. 1957, 53, No 2, 95-100. Abstract: Ila abstract. Card . 1/1 112 NISHIM, A. Stand for testing cross nenbers ar-d trusses. Stroltell no.1:12 Ja 160. (MM 130) (Trusses-Testing) HZSFIINO A.M., insh. - : , ~~, q,;~4 A~, 't. - '. - I _j-, -(.~ t~ - ProlotW,tng the life of vibratnrs with elastic rollers. Mekh. strol 15 no-9:17-18 S 158. (141ILk 11:10) (Vibrators) NISHIN, S. , -.,. .- Movgorod power engineers are fulfilling their labor tasks. ZhIl.- kom.khos. 9 no.12:26-17 159. (MM 13:4) / I 1. Glavnyy inshener I(ov&rodskoy slektromett , 9i Novgorod. (Mmorod-Ilectric paver distribution 9 ft 9 It K 6 W l aA 0-60"6616 4.0 #qe*fq(((f "CC fftjjft~ f ThS bd=~ it dki WAd" Of aw d"vkpM" 41 aw A U- .00 M100 Diu. 9*44(W -apbaot Ob ,a ut t4 tic bet"(se A d 00, 00 . CAWN l Mp P AwtUreve batwft The 1tWv Vtrh fMO4 to tw the kO -0# 4 0* WOW. -*0 4 Igo* 00 coo asO Uso frar-- sq~ Ofe''040C C4"4(4#^ CATO* V=M- "OfAili 42? 0.-v-4-1. $f of a a 0 1 is IN 6 a 0 3 f av, 0. 4t I I a as I I It e 0 w ojOa 0 0 off o & 0i 9 * ~69 * 0 0 19fe 7 N.A. ~,PDW . Affeat of atmospheric bumidity of the fruitirg amd opening of bolls In the cotton plant. Izv. AN Ur.SSR no.l.-35-43 153, (MIR& U.-D (Cotton growIng) (Humidity) A. 1"0 nations of the Cotton Plant -in 'connection with at'~r "Physiolov-1cal Ynvestip Conditions." Published by tne Central Asia ~matc University. 1:dn hillier "'ducation USSR. Central Asia ',Tate Vn;versity imcni V. 1. 7_~!nJn. Tashi~-rm, 1955. (Dis5txtation for tiie Derref..- of Candidate in 50: letonis' ~'7o. 2-1, 2 J.,11,,,r 19155 Country : USSR Category: Cultivated Plants. Commercial. Oll-Boaring. Sdgar-Bearing. Abe lour: RZhBlol., Vo 22, 1958, No 100360 Author t Todorov,.NAi; Npshl=#.~N. Inst sCentral Asiatic University Title iEffect of a Brief Interruption In Illumination at Different TeMporaturas on the Dropping-Off of Fruit OrGans In Cotton Plant. OrIS Pub., Tr. Sredneaz. un-ta, 1957, vyp. 116, 11-21 Abstraoti ShuttInS out light for 2-3 days loads to a mass abscission of ovarloa and to tho loss of the seeds. Ova.ries aged 1-6 days dropped off; ovaries older than 6 days and the buds Card 1/2 Abe Jour: RZhBiol., No 22, 1958, 1~0 100360. survived. Artificial anrichment of the leaves with suSars reduced the abscission. The higher the temperature of the air during the shading, the more Intensively the abscission of the ovary proceeds. Shutting out light for 3 days at the beginning of blossoming produced a decrease In the yiel"'. Shutting out light In the period of maximum blossomin3 and before the mass abscission of the ovarlas had almost no affect on the size of the crop but produced a shiftinS of mature bolls to the periphery of the bush. -- 3.S. Zamotaylov 2/2 M-106 I- USHIEMUK. R.I.-ftAningrad) cowle3dty or networks in entda bas Wes caitalniq nontriveleat elements with ism weights. ProbOL.Idb. n*.8tl23- 160 962. (KEM 2614) (Automatic control) (Cybernetics) - - NUERPLO M.D.; BRCZIN,, A.A. Accuracy in lining vertical mine shafts. Shakht. stroi. 6 noo7-.10-12 J1 162, (MIU 15:7) 1. Glamnyy marksheyder k=binata, Donotaksbakhtostroy (for Neshitin), 2, Glavnyy marksheyder treatm Done"4*3kahakhtoprokhodki (for Brozin). (Mine surveying) (shaft sinking) T'I~SIIIT-Clf " G. A'. Tools Planning in tool shops. Sellkhoz masbina ffo, 6. 1952 2 9. Monthly List of Russian Accessions, Library of Congress# September, 195X Unclassified. N iz- -S Vi I N G'/' (~ - F~ - 25(5) PHASE I BOOK EXPIDITATION SOV/2934 Burmistrov, Nikolay Semenovich, (Deceased), Mikhail Aleksandrovich Galkin, Pavel Fedorovich Matveyev, GrIgoriy Akiuovich Neshitov, and Nikolay Georgiyevich Ozhimkov Planirovanlye vapomogatellnykh tsekhov mashinostroitellnogo zavoda (Planning the Setup of Auxiliary Shops at a Machine-Building -Plant) 2nd ed. Moscow, 14ashgiz,, 1958. 278 p. 4,000 copies printed. Ed.: N.S. Buxmistrov, Engineer (Deceased); Reviewers: B.V. Voskresenskly, Economist; P.O. Kalinin$ Economist; -and A.I. Shuster, Zconomli3t; Ed. of Publishing House: A.A. Salyanskiy.; Tech. Ed.: V.D. ElIkind; Managing Ed. for Literature on the Economics and Organization of Production: T.D. Saksaganskiy. PURPOSM. This book is intended for employees at machine-building plants who are engaged In planning. COVERAGE: The book deals with problems in planning the setup and operations of various auxiliary shops and services at a Card l/ 7 Planning the Setup (Cont.) SOV/2934 machine-buiiding plant. The organization of work in such auxiliary units as the machine-repair shop, the tool shop,. the Industrial power plant, the transportation servioe, etc. is reviewed, and suggestions are made for Improving their labor productivity. Production and maintenance costs of auxiliary shops and units are analyzed, and possibilities of reducing cost investigated. Preparation of estimated expen- ditures and of monthly financial statements showing results of operations are discussed'. ..The operation of each auxiliary shop or service of the plant Is analyzed. Several chapters are written by different authors. No personalities are men- tioned. No references are given. TABLE OF CONTENTS: Preface 3 Ch. I. Economic Importance of Auxiliary Shops and Services at a Machine BulAding Plant (Burmistrov, U.S.) _ 1. Significance 6f auxiliary shops and services In the or- ganization of production 5 Card 2/ 7 Planning the Setup (Cont.) SOV/2934 2. Ways of Improving the organization of auxiliary shop operations 8 3. Mechanization of auxiliary services at a plant and Its shops 14 4. Specific features in planning auxiliary shops and sBrvices at a plant 16 Ch. U. Planning the Setup of a Machine Repair Shop (Neshitov, G.A.) 26 1. Method of planning the repair of equipment 27 2. Planning the production program for a shop 31 3. Drawing up the work plan 44 4. Estimating the cost of operations for a machine repair shop 55 5. Analyqis of the implemented plan and accounting records of operation 67 Ch, Ill. Planhing the Setup of-the Tool Shop (Neshitov', G.A.) TT 1. Organization of tool shop operations at a plant TT 2. Method of planning and controlling tool shop operations Card 3/7 Planning the Setup (Cont.) SOV/2934 3. Flanning the operational program for a tool shop 98 4. Work plan of a tool shop 10.2 5. Estimating the cost of operating a tool shop and its ser- vices 105 6. Analysis of the implemented plan and accounting records of operation 121 Ch. IV. Plpxming the Setup of an Industrial Power Plant (Galkin, M.A.) 143 1. Distinctive features of the power plant operation 143 2. Organization of power supply to an enterprise and its departments 147 3. Planning the setup of a power plant 148 4. Labor force and wage funds ' 1 166 5. Production outlays and production cost 176 Ch. V. Planning of Transportation (based on practical experience of the Moscow Small Automobile Plant) (Ozhimkov, N.G.) 179 1. Organization of the transportation service for a plant lT9 Card 4/7 Planning the Setup (Cont.) SOV/2934 2. Order of distributing hauling assignments to transporta- tion sub-units 180 3. Drawing up work plans 186 4. Preparing estimates of expenditures of the plant as a whole and of its various departments 189 5. Prorating estimated'expenditures as forecast for the plant as a whole 192 6. System of economic accountability for the transportation department 194 7. Monthly financial statement showing business activities of the plint and results of its operations 197 Ch. VI. Planning the Setup of the Maintenance and Construction Department 200 1. Organization and functions of the above department 200 2. Planning the setup of the department 203 Ch. VII. Planning the Au4l'iary Services of a Shop (Galkin, M.A.) 211 1. Planning the tool service of a shop 213 Card 5/ 7 planning the Setup (coat.) SOV/2934 2. planning the maintenance service-of a shop 215 3. Planning the power plant of a shop 222 4. planning the transportation service and the warehouse operations,of a shop 225 5. Planning public facilities within the organization of a shop 228 Ch. VIII. Technical and Economic Appraisal of Work Carried otit by SupportinglDepartments of a Plant (Galkin,,M.A.) 230 Ch. IX. Organization of Electric Power Supply at a Mass-Produc- tion Plant (Matveyev, P.F.) 242 1. Organization of electric power supply and consumption at a plant 242 2. Planning and controlling electric power consumption 245 3. Recording electric power consumption 253 4. Calculation of the cost of electric power 261 5. Rewards granted for economizing on electric power 265 6. Laying out the plan for organizational and technical mea- sures to be taken for cutting electric power consumption 268 Card 6/7 Planning the Setup (Cont.) SOV/2934 7. Checking power plant.efficiency by determining the power consumption cost per machine unit 276 AVAITART : Library of Congress Card 7/7 TM/jb 3-21-60 ,,JIGRITOV, GrIgorly AkIsmich; PAITIM, B.Ta., retsenzent; PROTSMV. S.A., Ta.m., red*; TUCEIUN# A.I., redAgd-vit; v v Namoo Mom takhzt.rsd* [Productiosk analysis of plants; practices of a plant] Analis prolgiodstvenzai delatellmosti savoda; In opyta raboty savoda. Komkva, Gos.nauchno-tekha.Lid-wo mashinastroit.lilw-ry. 1959. 116 p. (mm, 12:5) (Nachinery industry) "An exporimental investigation of unsteady non-linear flow throu,_I porous media".. report presented at the 2nd All-Union Congress an Theoretical and Applied Mechanics, Moscow, 29 Jan - 5 Feb 64. Ewr(m)/kPA(w)-2AvA(x)-z zip(c) - Gs f ACCESSION KRI ATSOO-1910 AUTHORs Abramyan. Yo. JA.- Bander 1. Y9.1 Itondarank L. M-1 BAbx'-2i--" a olev - G. a.-. Ka rv. 0A Pallcht 0 - 7.L~eh'qw Raumovp YA. To, S '. P0 P. t Skrinaki Gamqzlov. 1. ~E, A. p,l YqlJaJ._L; Koalkov Nothemko, 0. A. Ostreyko, G. M. P!tmv V~~ Sakol;~L; -uma-Shl- ,__U :TITE-E, Work cm t fm strong-current ASSIkemmfle ttm guelear P!!xsics Institutso iso M SSSR- (1) Strong-cumat pu2ge acco2erstaft wLth storage or rne 0-Lac- !tmam# .(II) Strong-curmat accelerators with one-rovolutloa capture of the in- -on& Jected electL iSOURCS4 International conference an Hlzh Eneraw A celeratoEp.-Mna. 1963. Trudy Moscow, Al-aiml!T&M.7 TOPIC TAGSt higb onetXy accelerator, electron 4cce)Arator, elActrm beam* betatron plaws, ABSTUCTs The vork an developing straft-curvent electron ring accelArators as , - raberlan 1)"art- w , begma in, 1266 by the "ham at the Kucle&r Physics Institute "at Ac4doW of 4clelices USR, with the object of studying the possibility of US L 42 46 37 J AC=SIOW Wto ATS007272 fOrML119 relativistic stabilized beau*. In the laboratories of the Institute ex perivental studies were carried out on the four methods for obtaining large ring currents of relativistic wlectrons: (1) spiral method of storing the electrons in. Installations of the betatron type with subaequsat betatron synchrotron accelerm- tion (Budkor G. 1. CERM Symposium 1, 60 (1956), (2) obtaining of Uniting electron current do. a by sea= of the Injection of *alectrons -frou a strong-current linear. calerator Into a ring chamber of large aperture with stibioequent synchrotron acc*14- constant magnetldl. ration; (3) storage of electrons In tracks (parking orbits) with field by means of the multiple Injection of electrotos from another less strong- current accelerator. this method Is utilized for the storage of electrons and pCWL- t in experiments with colliding been (expounded in detail by G. 1. Budker (4) obtaining of ursi, electroot currents by In the present collection, p. 274), means of the acceleration of electrons by a ring plasma. The present report dLa-, cusses the first two methods uadAr the following Opics 1 (1) pulsed Lran-lass; a with pirilWaary chaxV starage (3-2 disvics$; strong-cumat pulsed syn- betatra chrotrom N-2S, puland stvong-auvrent betatrw with spiral storage 04 deviceld us) I stmg-curmt pulsed (11) Iran-low ons-turn at S-curmt mynchratra 1.7 as* M 11-3N4 Orig AM hall V figur Card I/$ OQ .L h237-66 ASSOCIATIONs lastitut lodarmy fLaW 66 AN USR (Xuul44r PIWBLCG IwtLtwtGG irko AN SSSR) I SFAM177EDs 2SKMGS EXMI W an cams Np. !KO IMF gave ael OTMI 001 01. NWHKOV,, K. I. NEsfjKOV, K. I. - tolnequalities in the Mathematics Course of the Inter- mediate School.R Moscow, 1955. (Dissertation for the Degree of Candidate in Pedagogical Sciences). So.: Knirftaya Utopia',, No. 7,, 1956. A WZX. T.G.. naacbm" sotrmdnik; GIBSK. X.A.. zwuchnyy sotmdaik; KASWWA. G.G.. namcbnyy na1mchn7y sotrudnike, NIKITIN, N.V., nancinvy giatradnik; SMKU&UN. A.D., nauchozy motmdnlk; MISOV, A.Z., nauchnyy **trmdnik; KOSM- L"SM9 T*Ao# red.; TARASOTA# T*V., takhn.red, [Teaching mathematics In schools In the 1959/60 school year] 0 prepodavanit matamatild v shkole v 1959160 uchabnom godil. Pad red. A.D.3smishina. Kookys, 1959. 135 p. (MIRA 13:5) 1. Akadendys pedagogIcheakikh nauk RSM, Nomoov. Inatitut metodoy obttabenlys, 2, Sektor wtodiki prepodavanlys matematiki Institmta wtodav obuchenlys Akadamill Indagaglaheskikh namak RWSR (for an except Kostelovskly, Tarasova). (Nathematics-Study and teaching) MMV, I.I* (Koskva) conferences at the Academy of Pedagogical Sciences of the R.S.r.S.R. Met. v ahkole no.3.-87-88 NY-Jo 159. (HIRA 12:9) (mathematics) 10SHKOV, 1. 1. (Moskva) I Ru2a for the rounding off of numbers. Rat.v shkole w.4: ?7-31 JI-Ag '59. (MM 12:11) (Arithmetic--Study &ad teaching) (MOBLva) Approximate computation in the 6th grade comrse (fron practical experteace). Kat.v shkole no.4:26-33 JI-Ag 160. (MIU 13:9) (Approximate computation) NESHKOV, Ka*tantim Ivanovich; VIKULINA, E.K., red.; TARASOVA., -----"T.T. red, -- csystem or teaching an arithnstic course In the 5th grade] Slatema 1zlosheniia, kursa arifmotiki v V klasse. Haskva 1zd- (MIRA 1(*9 wo APR RSFSRO 1963. 293 p. - 7) (Arithnetic-Study and teaching) NEMKCII. T. "Tysing Plexiglas in making amateur radio receivers." P. 30 (Radio I Televizila) Vol. 6, no. 12. 1957 gofiia, %-Igarla SO. Monthly Index of East European Accessions (TrEAI) LC. Vol. ?, no. 4., A-pril 1958 L 29776-66 ZwT(Z.)/PP(0/ETI __Ijp(a) JD ACC Me AP6015069 CA) SOURCE CDEG: UR/0363/66/002/005/0855/0863 et AUTHM. Neshpor, V. A.; Ayrapetyants, S. V.; Ordanlyan, S. S.; Av~tin~fk, A.~Z. ORG: State Institute of Applied Chemistry udarstvennyy institut prikladnoy _(Go$ :k"i); institute-of Se conductors, M SSSR (Institut poluprovodnikov AN SSSR); 'L6ningrSd Technological Institute im. Lensovet (Leni.ngradskiy tekbnologicheskLy institut) ;TITLE*. Effect of the chemical composition of group IV and V transition metal IN=- their re- ~carbides in the region of homogeneity an the temperature dependence of sistivity and thermal emf SOURCE: M SSSR. Izvestiya. Meorganicheskiye materialy, v. 2, no. 5, 1966, 8s5-863 170PIC TAGS: carbide, zirconium carbide, vanadium compound, niobium compound, tantalum compound, thermal emf, resistivity A"&4,+ 4u~4w%& Avft4, n *6TRACT: 'Continuing thleoilr'"qt y of the electronic structure of group IV and V !transition uetal. monocarbideilpllhe authors Investigated the temperature dependence.. of the electrical res'lativity and absolute differ*qntial thermal eaf Of zirconium, tftrd 1/2 UDC:-546.261:662.0184-1 29776-66 ACC MR: M6015069 vanadium, nioblus and tantalum monocarbides which were prepared by sintering. Can- duction In these monocarbides was found to be metallic'In character and due,to free, electrons. As the carbon content (i.e., the number of car6on vacancies) of the sonocarbLdes changes, there Is a cha.nge both in residual resistivity and In the slop* of the temperature dependence of the resistivity and thermal eaf; there is a drop In carbon content in the region of homogeneity of the manocarbides. This can be interpreted by assuming a decroase In the density of states and in the rate at which the area of the Fermi surface changes with the ens~qW on passing from carbon- rich sonocarbLdes with the prevalence of directed N-C bonds to carbon-pcor monocar- bids* with the prevalenas of directed H-H bonds. Orig. arto has: 8 figures and 2 SUB COMW7020~ SUBM DATE: 22Kar6S/ OPIG REP: 017/ OM TXF: 013 Card,2/2 Category : USSR/Solid State Physics - Systems EA Abs Jour : Ref Zhur .Fizika., No 1, 1957, ff-, 1158 Author : Samsonov, G.V., MeshpeT, V,S.j Lax~ge, L~V. Inst, Moscow In3tituto fza, Mstais az:,A Gold Title Laws of f3rmaticn of BI-Iary Al,'Lcya rf Titsaium Orig Pub MetalIoveieniye i obyab,fks m-~tallov, 1956, No _", 30-39 Abstract When Ti itteracts with 5 that have a similar el ectror. shell structure and a small differpLee In. ate-mic diameters (7,nt more than 18%", the additive (Zr) may have a-- uT-limitei. sp-2.1.,.bllity im the cK amdI9 mndificati= of Ti, or else con- tinuous series !:df sr,-;.I.d s,,%!--,:ti-:!.s are f,..,r-me4 with/I titanium with a limited solubility ino< Ti (W.-, V~~ 14b, Ta',,~ KlcimeLts havitig a different electron- shell charazter wil a. different atomic diameter interact with titanium. to form solid solaticas with a lJm.4t,-d solubility In the/I and O'k titanium and with dia- gram of state with eutectic c- eutect:;id tra=formations (MM, Fe, Cr. 5i, ffi, Cu)-or with peritectic or pe-ritect~~Jd tramsfermations (C, N,, Al). When Ti is smelted with eleme:~,,ts cf the tratsiti= grolaps., one observes an expansion in the regio:2 of the a:.!Ad wjluti:~c withQ(-Ti. Card 1/1 Ivrs A "w" Category : USSR/Atomic and 21.1oleculor 1-hyaics - Low Temperature D-5 Fhysics Abs Jour s Ref Zhur - Fizike, No 3. 1957, No 6557 Author Sf.%,msonov# G.V.t Ncqhror~ V.S. Inst Koscow Institute ~:-r-'Vin'6rrous Metals and Gold Title Superconductivity of Barides, Carbides, Nitrides, end Silicides of Transition Letals. Orig Pub Zh. eksperLri. i tear. fiziki, 1956, 30, No 6, n43 k in the surorconductinv state of compounds of the following serics3 TiC-TUT, VG-VX, end ZrB-ZrC-ZrN, the author assu-nes thet the values of Tk is related to the distribution of the electron density, i.o., it deronds on the accepting ability 1/(Ytn) of the atom of the transition metal (Roferat Zhur Fizi!:a, 1954, 10208) rnd on the ionization potontiP19D of th-3 motalloid. Tho most favorable ratio of the values 11(Un) and P is fotmd apparently in the Nb end TP compounds. The sharp rod~-.ctlon in the number 1/(Nn) for TI, Zr, V, end PS compared with Ta, Nb, W, and 1,,'o is accompanied by a sharp Increase in Card 112 Abstract From on analysis of the behavior of the transition points T Category : USSR/Atomic end Molecular Physics - Lov Tomporaturo 1)-5 Physics Abs Jour : Ref Zhur - Fizika, No 3, 1957, No 6357 the values of T . In many cases tho value of T increases ke k with increasing ontont of metalloid in the phases, for example; Nb2N -- 9.5'K, JIbN -- 150K; Ko 0 -- 2.90K, KoC -- 80K otc. Tho rolptivaly low values of ~ I for baridos compered with carbides end nitrides ere due epperently to the smell frectionof electrons, cepablo of making up the electron do-- ficienciop of the etons of the trancition metalo. Silicon compounds, which heve ntill a lower ionization potontial, should occupy a place in the '.,eSi -- !-,oB -- KOC -- Mell series, which is indeed confirmed in most cases. Card 2/2 -IV =:~ - I I , - -1 V - - . -IeL mit SAIMSONOV G-V-,NESHPOR V-S.,KULI1PTSZVA G.A. TITLE On t h e Re lat io-n-s-hi-p-Iff -efw-een Thermo emis s i on Cons ta n t s o f -,L-a i~z "letals(and Their Compounds with Several iletalloids)and Electronic Structure. (0 svyazi termoemissionnykh postoyanrjykh perekhodnykh met_-11, itch soyedineniy s nekotorymi metalloidami)s elektronnoy struk~uroy - Russian) P_-HIODICAL Radiotekhnika i 'Iektronika,1957,701 2, lir 5,pp 631-636 ABSTRACT An attempt is made here to determine the relation between the elec- tronic viork function in thermoemission and the electronic structure of transitive metals ( and their compounds with :b*oron carbon and nitrogen). It is shown that the work function depends on the atomic structure of the metal and decreases with decreasing degree of screening of the electrons of incompletely occupied d-atom shells of transitive metals. The work function can be broa6ht into connection with the quantity of dispersive power of the atoms of transitive me- tale which are characterized by the criterion 1/11n. 11 - chief quantam figure; n - the number of electrons in the incompletely occupied d-shell, it decreases with increasing I/Nn. In metalloid compounds of transitive metals with bor6n , c arbon and nitrogen the work func- tion should increase with increasing 1/Nn for the corresponding 41ransitive metals.This is confirmed in the case of borides,but in the case of carbides and nitrides it can not yet be considered to be Card 1/2- an established fact. The ionizing potential of the metalloid atom On the Relationship Between Thermoemission Constants of 109-5-1-4/22 Transitive Metals (and Their Cokpounds with Several ll.etalioics) ana Blectronio Structure. exerts considerable influence on" the amount of the work function of metalloid compounds. k redaction of the work function is to be expected in the MeB.-UcC-Reff aeries, where Me in a transitive metal of groups IVa, Va, or VIa. The work function is in most cases smal- ler in the case of metalloid oompounds th an in that of the corres- onding metals. V 1 table, 4 illastrationg, 6 01avic reforonces). ASSOCIATION Uot diven. PRESENTED Br SLIBilITTED 25.6.1956 AVAILABLE Library of Congress. Card 2/2 AUTHOR: Ne s or, V.S. and Samsonov, G.V. 126 TITIE: On the problem of brittleness of metalld'ids compounds. (K voprosu o ldirupkosti metall-apadobn7kh soyedineniy.) 'e P'&RIODICAL:"Fizika Metallov-i 1; -tallo-yeden-Le" (Phyrics of Lletals and ?" fftlO), pp.181-183 (U.S.S.R.) MletallurgY), 195? Vol.IVj 17,o.--- ~D 0 ABSTRACT: The coefficients of linear ey.Dansion of a niu~ber of metalloids were deteimined and their modulus of elasticity was estimated on the basis of a formula proposed by Ya. I. Frenkell (3). In a table, p.1810 the coefficients of linear expansion, the elasticity moduli, the mean square displacements of the molecules in the crystals and the brittleness of these compounds are given, some of the data being based on inforix-ition published in literature. The followinE compounds urere investigated by the authiorS: h1o 2C VJC, TiC, ZrB2 , TiB 21 ZrC, Til-T, CrB2. The valu--s Given in the table for W C 1TbC, TaC and VC are those given by Koster (Zs. f, bletall de, 1948, 391 ill). 1 table, 1 graph, 7 references, 3 of which are Russian. Institute of Letal Ceramics of Special Alloys, Ac.Sc. Ukraine: i,1oscovi Institute of non-ferrous metals and Gold imeni M.I. Kalinin. Reed. Lar.22, 1956. W 5 H P&A I V, ',i AUTHORSt Neshport V.S. and 3amsonov, G.V.(H.V.) 21-5-13/26 TITLE: New Borides of Rare-Earth Elements (Novyye boridy redkozemelf- nykh elementov) PERIODICAL; Dopovidi Akademii Nauk Ukrainetkoi RSR, 1957, Nr 5P PP. 476- 479 (USSR) ABSTRACT: The authors obtained the borides of dysprosiumg holmium and lutecium by means of the vacuun-thermal method. They were subjected to X-ray and chemical analyses. Roentgenograms of all these compounds are completely similar and indicate the presence in each of them of two phases; cubic and tetragonal so that the composition of these borides is as follows: DYB6. DyB4, HoB69 HoB4, LuB6 and LuB The constants of their lat- tices are cited in Table I of the article. The intensities of the lines of the two phases in the roentgenograms are approx- imately equal; most of the lines are ascribed to the phase of MeB4. The article contains 1 roentgenogram, 1 table and 6 Card 1/2 references, 2 of which are Slavic. New Borides of Rare-Earth Elements 21-5-13/26 ASSOCIATION: Institute of Metalloceramics and Special Alloys of the AN Ukrainian SSR. (Instytut metalokeramiky i spetooplaviv AN URSR) PRESENTED: By V.H. Svechnikov(1r.K. SvVchnikov), Member of *.he AN Wal zdan SSR SUBMITTED: 4 March 1957 AVAILABLE: Library of Congress Card 2/2 - N E sAfop_ ) V'~' V(mr) PHASE I BOOK EXPLOITATION SOV/2170 Akademiya nauk Ukrainskoy SSR. Institut metallokermiki I spetsiall- nykh splavov Voprosy poroshkovoy metall~rgii I prochnosti materialov, vYP. 5 (Problems in Powder Metallurgy and Strength of Materials, Nr 5) Kiyev, Izd-vo AN USSR., 1958. 172p. 2,000 copies printed. Ed. of Publishing House: Ya. A. Samokhvalov; Tech. Ed.: V.Ye. Sklyarova; Editorial Board: I.N. Frantsevich (Rasp. Rd.), I.N. Fedorchenkop G.S. Pisarenko, G.V.Samsonov, ind V.V. Grigorlyeva. PURPOSE: This collection of articles Is intended for a wide circle of scientists and engineers in the research and production of pow- der metallurgy. It may also be useful to,advanced students of metallurgical institutes. COVERAGE: This collection of articles describes the results of In- vestigations made at the Institut metallo keramikii spetsiallnykh splavov., AN USSR (Institute of Powder Metallurgy and Special P-1- loys, Academy of Sciences, Ukrainian SSR). The physical and chem- C ard 1146 3- koblems in Powder Metallurgy (Cont.) SOV/2170 ical properties of materials used In powder metallurgy are dis- cussed. Materials described as new, production processesp and methods and results of mechanical testing are described. No per- sonalities are mentioned. References follow each article. TABLE OF CONTENTS: Samsonov, G.V.0 and V.S.Neshpor. Some Physical Characteristics of Metal-like Compoundd-. -_ 3 The authors, describe results of Investigations of microhardness, coefficient of thermal expansionp calculation of the inter-atomic bond between the metal and the metalloid, and factors affecting this bond. They conclude that the hardness of the ijetal-like com- pounds is determined chiefly by the bonding forces between the atoms of the metal and the metalloid. Yeremenko, V.N., G.V. Zudilova, and L.A. Gayevskaya, Chromium- Niobium Structural Diagram 36 The authors describe the results of an investigation of the chromium-niobium system by thermal, metallographic, and radio- graphic methods. Card 2/# Problems in Powder Metallurgy (Cont.) sqV/2170 Ifrantsevich, I.N., and _Y ? ..LS. Neshpor, The Problem of Radiographic Determination of the Cha-riat-e-rTs-ET-a Temperature 49 The authors discuss the characteristic temperature In respect to the strength of metal and alloys and the effect of the alloy- ing elements on high-temperature strength properties. Andriyevskiyo R.A. The State of Certain Problems of the Theory of Sintering Metal Powders 54 The author discusses the theory of sinteringp the role of sur- face phenomena during sintering, diffusion and plastic flow and recrystallization during sintering in an attempt to clarify the physical nature of sintering. Yeremenko, V.N... and Ya. V. Natanzon. The Role of the Transfer of the Substance Through the Gas Phase in Sintering Iron and Chromium 73 The authors Investigated the effect of KC1 present in the sinter- ing atmosphere on the shrinkage of a specimen, comparing it with shrinkage during vacuum sintering. Card 3/0 SAMSONOV, G.T.; HISHM. V.S. Theoretical assumptions an the structure of beat resistant materials based on metallic compounds (with summry In Inglish]. Insh.-fis.shur. I no.8-.30-38 Ag 158. (KIYA 11:8) I.Institut metallakeramiki I spetesplavoy AN USSR, Klyev. (Refractory mater W a) Yermakova, To A. 78-3-4-7/38 AUTHORSt Samsonov, Go V.qjjesh2oz,-7---' TITLE: Investigations of the Properties of the Alloys of the 3yatem Hiobium-Silicon (Isaledovaniye avoystv splavov sistemy niobi.y-kremniy) PERIODICAL: Zhurnal Heorganicheskoy Khimii, 1958, Vol. 3, Ur 4, ppo 868-878 (USSR) ABSTRACTs The phase composition of the all1ya in the system niobium- -silicon in concentrations of from 0 to 100 atom% was investigated by radiographic and metallographic methods. Three intermediate compounds were founds 1.-Nb4Si with hexagonal lattice with the following parameter: a = 3,59 1, 0 W 4,46 2. 2.-NbaSi in three modifications, tetragon 1 oc- and 8- mo ifleations with parameters a n 6,56 1 and c - 11,86 and a = 10t00 I and c - 5 07 Z, an hexagonalr-modification with parameters a - 7,52 1 and c - 5,24 1. 3--Nbsi with hexagonal structure a = 4,78 R and c - 6,56 The meNing points of some alloys were investigated. It was found on this occasion that the compound Nb4Si has a congruent Card 1/2 melting point. Investigations of the Properties of the Alloys of the System 78-3-4-7/38 Niobium-Silicon '~.The investigations of the electric conductivity of the alloys of niobium and silicon have three specific Doints in the phase diagram at 20, 37,5 and 66,6 atoea silicon.. Also the stability of the alloys against oxidation in air at 100000 was investigated. The alloys are not resistant to corrosion. Based on the investigations carried out as well as on the analyses of the-alloys the phase diagrams of niobium and silicon were bonstructed. There are 11 figures, 5 tables, and 18 references, 2 of which are Soviet. ASSOCIATION: Institut metallokeramiki i spetsial Inykh splavov Akademii nauk USSR (Institute for Ketallocerdmids and Spo~cial AUoys,, AS UkrSSR) SUBMITTED: June 25, 1957 Card 2/2 21-58-7-13/27 AUTHORS: Kovallchenko, Neshpor, V.S. and Samsonov, G.V. ----------- TITLE: Investigation of Zirconium Boride - Polybdenum Alloys (Issladovaniye spavov borida tsirkoniya s molibdenom) PERIODICAL: Dopovidi Akademii nauk Ukrainsikoi RSH, 1958, Nr 7, PP 740-742 (USSR) ABSTRACT: The properties of ZrB - "o alloys obtained by sinter- 2 4" ing were investigated. On the basis of the results of vi- sual thermal analysis, metallographic and roentgenographic studies. shrinkage curves, and measuring the macro- and microhardness, a hypothetical diagram of the ZrB 2-Mo sys- tem state was composed. The existence of the triple bor- ide Mo2ZrB 2 was discovered in the system. Conditions for the hot presi;ing of zirconium boride alloys with molybden- um were studied at molybdenum contents of 5; 40 and 60 mol- ecular per cent. Sufficiently compact alloys were obtained on pressing under a specific pressure of 260 kg/sq cm and temperatures from 2,000 to 2P100 0C. There is I graph and Card 1/2 10 references, 7 of which are Soviet, and 3 American. 21-58-7-13/'27 Investigation of Zirconium Boride - '~Iolybdenum Alloys ASSOCIATION: Institut metallokeramiki i spetsiallnykh splavov AN UkrSSR (Institute of Metalloceramics and Special Alloys of the AS UkrSSR) PRESENTED: By Member of the AS UkrSSR, V.N. Svechnikov SUBMITTED: January 23, 1958 NOTE: Russian title and Russian names of individuals and insti- tutions appearing in this article have been used in the transliteration. 1. Zirconium boride-mopbdenum alloys-Properties 2. Zirconium boride-molybdenum alloys-SIntering Card 2/2 SOV-21-58-8-9/27 AUTHORS: SamBonov, G.V.,-Neshpor, V.S., Strellnikova, N.S. ,TITLE: Magnetic Susceptibility of Solid Solutions of Some Metal-Like Compounds (Magnitnaya vospriimchivost' tverdykh rastvorov nekotorykh metallopodobnykh soyedinenty) PERIODICALs Dopovidi Akademii nauk Ukrainalkoi RSR, 1956, Nr 8, PP 838-840 (USSR) ABSTRACT: Investigations of magnetic susceptibility of metal-like com- pounds can contribute to an explanation of the nature of chemical bounds in these phases. The authors investigated the magnetic susceptibility of the single-phase solid solutions of the following metal-like compounds: ZrC-NbCl TaC-NbC; TaB2-ZrB2 and TiC-TiN. Since the measurements of absolute susceptibility were difficult due to experimental conditions, the values of relative susceptibility were determined by taking that of one of the components for unity. The results of experiments are presented in graphical form showing the dependence of magnetic susceptibility on the concentration. The two curves for the alloys NbC-ZrC and TaB2-ZrB2 have peaks, Card 112 whereas the curve for NbC-TaC does not posse8s a peak. In BOV-21-58-8-9/27 Magnetic Susceptibility of Solid Solutions of Some Metal-Like Compounds the alloy TiC-TiN, a sharp fall of the magnetic susceptibility is observed with increasing TiC concentration. The authors attempt to interpret theoretically these experimental data. There are 2 graphs and 5 references, 3 of which are Soviet, 1 German and 1'Polish. ASSOCIATIONt Institut metallokeramiki i spetasplavov AN UkrSSR (Institute of Metalloceramics and Special Alloys of the AS UkrSSR) PRESENTED: By Member of the AS UkrSSR, V.N. Svechnikov SUBMITTEDs February 26, 1958 NOTE: Russian title and Russian names of individuals and institutions appearing in this article have been used in the transliteration. 1. Intermptallic compounds--Magnetic properties 2. Intermetallic compounds-Phase studies Card 2/? 131 s- Y, 'V" -1-7/14 AUTHORSt SaLfsonov, G Ifeshpor. V. S. TITLEt Production, Properties and Technical Use of Holybdonun-Di3ilicidp- (Polucheniye, svoystva i tekhnicheskoje primeneniye disilitsida molibdena) 13 PERIODICAL: Ogneupory, 1958,Allr 1, pp. 28 - 35 (USSR) ABSTRACTt This is one of the moot important difficultly fusible compounds (110 Si 2) which in recent years are used at high temperatures. The extremely high resistance to tte influence of atmospheric oxyGen at a temperature of UP to 1700 C and other agressive gases, as well as to acids and molten metals is to be considered its ba3ic property. Its properties and behavior at different temperatures are described in detaill K. I. Portnyy also participated in these tests. The behavior of Ho Si in the atmosphere of various gazes and in the air is representel by the curves of figures I and 2 and then explained. Molybdenum-disilicide is resistant to the action of the following molten metals: sodium, lead, bismuth, tin, mer- cury and other metals which do not form disilicides. Tabb I shows the 9esistance of UoSi to the oxidation in an oxygen flow at 1200 C after previous Keating in metal melts. HoSi . Anc6ned to Card 1/3 creeping and is not sufficiently resistant to heat2sAos s see 151-1-7/14 Production, Properties and Technical Use of Molybdenum-Disilicide table 2). Thu other mechanical and physical properties of MoSi 2 are enumerated in detail and explained and its use at high tem- perature is described in detail. Figure 3 shows a molybdenum heat- er with and without a UoSi 2-covering. There are many pos.sibilitiezi of the propuration of MoSi -powder , the sinplQat ona consi3tf) of a direct combination of molybdenum with uilicone Mo 4.231 - The tests of a direct synthesis were performed together with Popova. Up to a temperature of 1100 0C the tests were performed in a laboratory furnace TIC 30/200 in an argon atmosphere (figure 4), at higher temperatures In a vacuum resistance furnace. In the La- boratory of the Institute for Powder Metallurgy and-Special Alloys AN Ukrainian SSR UoSi was prodired at a temperature of 1000 C and one hour halt. I. D. iadomysellskiy also participated in the ex- periments. Figure 5 records the porosity dependence of the test samples on the 3intering temperature and figure 6 that on the time of 3intering. FiJure 7 shows products of iiolybdenuia-disilicide of the firm Plansee in Austria. Conclusions% a) Mosi is one of the compounds most resistant to scale and chemi- cal inHuences, which property is connected with its hi,,,h thermal conductivity, hardness and stability. It is used for the produc- tion of refractory products, heatproof alloys and covers for wo- Card 2/3 lybdenum products and for the soldering of ceramics with metals; L, 131-1-7/14 Production, Properties and Technical Use of b1olybdonum-Disilicide b) the rjost suitable method of the production of ~:oSi -povider con- siato in the heating of briquettes of a nixture of i,.ioiybdenun- ~~nd silicon-powder in the course of I hour at a te:ajtraturc of 1000 0C and the manufacture o6 products by hot prcs.-~ing of J."Osi 2- powder at a temperature of 1900 C. There are 9 fi-ures, 2 tables, and 27 re- ferenceaq 9 of which are Slavicv T German and 10 Ebgllsh. ASI'JOCIATIONe Inatitute for Powder Metallurgy and Special Alloys Aft Ukrninian SSR (Institut metallokeramil~i i spetsialInykh splavov All USSR) AVAILABIX: Libr&ry of Congress lo Compounds-Properties 2, Compounds-Production 3. Compounds-AppUcation Card 3/3 - 104 KOIGNOTITS. IF.To;. NNSFIL SARSOMY. G.T.; WIZNKDVICH, S.A. Thermoelectric properties of certain metal liks coqvuzdo.. Zhmro takh. fize 28 no.12:2382-2389 Y 158. - - (MIRA 12:1) (Carbides) (Borides) (Therwelectricity) EDTALICIRENED, K.S.; NISHFOR. V.S.;~SAHSONOV, G-T- vl_ lc!?;i~sr Condition for formation of lanthanum carbide. Zhur. prikl. ichim. 31 no.9:1427-14zg S 158. (nu n: 10) (Lathanium carbide) AUTHORS: ffeshpor, V-. S., Samsonov, G. V. 76-32-6-21/46 TITLE: New Borides of Rare Earth Metals (govyye boridy redkozeaellnykh metallov) PERIODICAL-. Zhurnal fizicheakoy khimii, 1958, Vol. 32, Ur 6, pp 1326-1332 (USSR) ABSTRACT: After a discussion of papers and discoveries in this field this paper gives the results of the measurements as well as the production of borides from Dy 2039 Ho2030 LU2039 Gd2 03 and Er 203' The production was carried out from the mentioned oxides with boron carbide at 1400-16000 C in vacuum furnaces; the phases of the obtained products were identified and the corresponding formulae were determined as follows: GdB V DyBV HoB6, ErB6' LuB6 and GdB 4, DyB 4, HoBV ErB4, LuB4. The authors found that the metal is in bivalent form in the case of CaB 6' BaB 6' SrB 6' YB6 and ErB 6' while it is in trivalent form in the other hexa- borides of the rare earth metals. This was determined from the Card 1/3- obtained values of the lattice parameters of hexaborides as welli ~ r, 1 - ! ffew Borides of Rare Earth Metals __'i 76-32-6-21/46 as from the lenghts of the bindings Me-Me, Me-B,and B-B calcu- ,kted herefrom. It was noticed that the Me-Me and Me-B bindings decrease in every period at the transition from the bi-zb the trivalent metal, and that the weakening of the bond in hera- borides can be explained by an increased concentration of the free electrons which weaken the lattice. The stability of the lattice MeB6 is due to an especially strong binding of the boron atoms. The assumption is made that the formation of a hexaboride is possible also with elements with a higher ioni- zation potential; this is, however, connected with difficulties as was shown by the experiments for the formation of silicon hexaboride. There are 1 figure, 3 tables, and 21 references, 11 of which are Soviet. ASSOCIATIOR: Akademiya nauk,USSR Institut metallokeramiki i speteoplavov, Kiyev (Kiyev ,,Institute of Metal Ceramics and Special Alloys, AS Ukr: SSR) SUBMITTED: February 14, 1957 Card 2/3 zj/~~ ~s Iltl 6 dI~ 0. Is.. AUTHORS: Neshpor, V. S.# Padernor Yu. Bo, 20-3-27/59 Samsonov, G. V-. TITLE: On Rhenium Borldes (0 boridakh reniya). PERIODICAL: Doklady AN SSSRp 19581 Vol- 118, Nr 3, Pp. 515-516 (USSR) ABSTRACT: In the present work the phase composition of Re-B alloys was investigated as there is practically no reference to be found in publications (with the exoeptioa of a short mentioning In ref. 1). These compounds are first of all of interest as they might be similar to the stable# difficultly smeltable and hard tungsten borides (ref. 2) as well as to the unstable manganese borides. Alloys were investigated which had been calculated with a view of producing oompoundog existing In the systems of metals similar to rhenium as regards their electron structure and their properties. Th*y were Re4B, Re2Bg Re 3B21 ReB' Re3B4t R92BY ReB2 and Re?5' The alloy were produced by sintering pressed powder mix- tures (re;. 4) at 19000 for two hours. The radiograms of the Card 1/3 alloys taken by copper radiation are given in fig.l. No I On Rhenium Borides 20-3-27/59 satisfactory coincidence of the structure of the Phagos produced with the known boride phases was obtained. Beginning with composition Re4B a gradual lattice trans- formation of rhenium is observed. Besides the considerably washed lines of rhenium a certain amount of additional weak lines appears which also appear washed. With a further increase of the borine content to 33 atomic-% these lines become clearer. A further increase of the content of borine brings about a gradual change of the radiogram. Beginning with 50 atomic-% all radiograms look the same. Although no essential changes of structure are to be noticed with the transition from one alloy to the other the radiograms of the alloy-samples far from each other are markedly different. In system Re-B two phases can be assumed: 1, within the range of 20-35 atbmio-% and re within the range of alloys with more than 40 atomic-%.B. The last phase could not be identified hitherto. The alloy with 33.3 atomic-% B immediately after sintering had a structure corresponding to the e-phases of me2B5', After storing in the air for I month it passed over to Card 2/3 the TO-phase, however. 9(3), 24(3) SOV/2o-122-6-1a/43 AUT-NHS; Samoonov, G. V., Neshpor, V. S. TITLE: On the Rel&tJonship Between the,Work Electron Yield FrM Hexetborides of Alkali-Earth and Rare-Eart12 Metals aad Their ElectrOn ArUcture -, (0 avyazi rabo-ty- vykhoda elektronov iz geksaboridov nlichelochno-i redkozenellnylh metallov s ikh elektronnym atroyeniyam) PERIODICAL: Doklady Akademii nauk SSSR, 1958, Vol 1229 Nr 6, pp 1o21-1o23 (U33H) ABSTRACT: Recently, the parameters of the thermoelectront emission of nearly all hexaborides of earth-alkali metals and rare earth metals have been investigated. A diagram (Ref 4) shows the dependence of the work function of hexaborides of rare earth metals MeB6 on the nuclear charge number of their metal com- ponents (according to data obtained by G. A. Kudintseva and B. 11. Tearev). The character of this dependence can be ex- plaind satisfactorily by the theory of the atomic structure of rare earth metals developed by N. A. Tellyashevich (Ref 5) as well as by the theories developed by various authors con- Card 1/3 cerning hexaboride electron structure. The production of hexa-. SOV/2o-122-6-18/49 on the Relauftmhip Between the Work of Eleatma. Yield Fr_M_ - Hexaborl&s ot AlkaU-Earth and Rare-Earth, Ketals and Their Elect-= strMeture boridea is connected with the double ionization of metal atoms and with the transfer of 2 external a-electrons by a boron atom. In this way 5 covalent bonds are produced in the boron-octahedra and between them. Reference is made to several earlier papers dealing with this eubject. Next, binding between metal atoms and boron tt~)ma is brought about by meana of an electron collective. which is formed by the elec- trons of normal or excited d-orbits and partly also by such electrons as belong to the s-orbits of the metal as are not utilized for binding with boron. It is necessary, in the hexaborides of rare earth metalsto investigate two systems of energy bands, viz. the narrow only slightly excited 4f-band and the comparatively broad hybride 5d-6d-band. The latter must determine electric conductivity and the work func- tion of the electrons from the hexaborides under investigation. Several details are then dealt with. The above mentioned dia- gram also shows the number of possible terms for 4 f-electrons as function of the nuclear charge number of the metals, which were calculated according to the rule Card 2/3 kfn . U14-11 (where k denotes the number of terms). The maximum on Rhanium Borides 20-3-27/59 There are I figure$ and 6 references, 4 of which are Slavic. ASSOCIATION: Institute for Metal Ceramios and Special Alloys AN USSR (Inatitut metallokeramiki i speteoplavov Akademii nauk Ukr. 33R). PRESSITSD: September 20, 1957P by 1- 1. Chernyayev, Academician SUBMITTED: September 18, 1957 AVAILABLE: Library of Congress Card 3/3 o64oo 5(2); 28(5) MV/170-59-2-18/23 AUTHORS: Samsonov, G.V., Neshpor, V. S.. Berebryakova, T.I. T=-. The Increase in Electric Resistance of Directly Heated Cathodes Made of Borides of Rare-Earth Metals PERIODICAL: Inzhenerno-fizicheskly zhurnal, 1959, Ur 2, pp 118-120 (USSR) AEVYIRACT s The use of thermal cathodes made of hexaborides of lanthaaum, cerium and yttrium has been expanded In the recent time, but still it is hampered by their relatively low electric resistance. One of the possible ways of Increasing their electric resistance is the use of their alloys instead of individual borides ZH-ef 2,7. The authors prepared alloys of hexaborides or lanthenum and cerium by hot pressing the mixture of their powders under a pressure of 15o kg/cm2 and at temperatures of 1,600 to 2,OOOOG. The sintered samples were subjected by an X-ray analysis in the RKE chamber, end the data obtained are presented in Table 1. The roentgenograms do not reveal characteristic lines of individual borides but two lines of their solid solution are ooserved. The specific electric resistance of Card 1/2 the solid solutions of some borides Is shown in tne form of curves, o6Loo SOV/170-59-2-18/23 The Increase in Electric Resistance of Directly Heated Cathodes Made of Borides of Rare- Earth Metals electric resistance versus concentration, in Figure 1. It was found that alloys of hexaborides of lanthanum-and cerium are most advantageous, among all the alloys investigated, for the use in directly heated cathodes. There are: 1 table., I graph and 3 references, 2 6f which are Soviet and I American, ASSOCIATIONt Institut metallokeramiki I spetasplavov AN USSR (Institute of Metallo- ceramics and Special Alloys of the AS UkrSSR), Klyev. Card 2/2 SOV/180-59-4-33/48 AUTHORS., . Nes por, V.S. and Samsonovs G.V, (KIyev) , TYTLE; The Plasticity of Titanium Silicides Pi PERIODICAL:Izvestiya Akademit hauk SSSR, Otdeleuiye tekhnicheskikh nauk -Metallurgiya.i toplivo, 1959. Nr It, pp 202-204L (USSR) ABSTRACT: The shrinkage of samples made from the s1licides T15Si3(TIS!0.6), TiSi and TiSi2 during hot pressing was studied. The silicides were prepared by direct synthesis using a method described previously (Ref 6). The chemical and phase analyses are given in Table 1. The samples were made on a laboratory press without any special protective e m2. The shrinkage atmosphere using a pressur' of 60 kg/c was measured by the distance between the top and lower parts (2) of the press in Fig 1, Fig 2 shows the relation between percentage shrinkag6.and the ratio T/Tswhere T is the.pressing temperature and T the melting point. The curves have two distinct parts fa"b) and (b-c) with ev~ sharp,-transItton, at b. This corresponds to the stage whe.4,aill the particles are in contact and recrystallization -The temperature where the point b occurs ..Ihcreases with increase in silicon despite a decrease in Card 1/2 -~the strength of the atomic bond. This is explained by the _ 15 (2), 15 (6) 11.11THOR3: Neshpor, V. 3., Xi3ly_,f, P. S. 907/131-59-5-9/12 TITLE': 11ot Presaing of Chromic 36ri4e Powder and Some Propertiqs of tho Sinterod Material (Goryacheye prossovaniyo poroshka borida khroma i nckotorvye svoystva spechennogo materiala) PFRIODICAL: Ogn,:!nporyo. 1959, Nr 5, pp 2.31-236 (USSM) ABSTaA"T: In the pre3ent.paper, the authors Investigatt the sintering conditions of the chromic boride poader which is obtained by the reaction of 'chromic oxide and boron carbide. The che-.icFll composition of chromic boride is given in-table 1. The sintering of the chromic boride powder was done by hot pressing by means o~ "s laboratory I:ev.er press (Fig I ). kt a tempernture of 2000 t 500, a pressing*effect of 2 100 kp_-/cm and a sintoring time of '10-12 min, it was pos.,;ible to obtRin samples with the minimum porosity olf 34 (Fig 2). The melting temperature of the CrB 2 ascertained by the authors is 2200 � 50 0 which comes near the temperature ascertRined by .Larkovskiy (Ref 3). Figure 3 shows the relative chRnge in Card 1,13 waight at 1200 0 of the CrB 2 samples related to 1 cm 2 surface Hot Pressing of Chromic 3oride Powder and Some 3011/131-59-5-9/1? Properties of the Sintered allaterial ,uro ~t represents the curve of the change in weight. and fig This change in weight is a function of the time of oxidation. The oxidation stability of the borlden ascertained by Kotallnikov (Ref 14) corresponds to the one in the present paper. The coefficients of expansion of three samples with different Dorosities at 5000, as well as the resistance to pressure and rupture of chronic borida samples with different porosities, are further indicated. Some properties of the chromic boride are given in table 2. Concern-4ng the stability of the chromic boride against the action of active reagents, the authors of this article refer to the papers by Kotellnikov (Ref 14) and Modylev3kaya (Ref 22). The indicated properties of the chromic boride permit its use as a constituent of heat-resistant alloys. A shortcoming is its brittleness which can be reduced by cementing the boride grains with a metal binding agent. The cemented chromic boride can be used for the manufacture of nozzles for spraying fused metals, of crucibles and coats of thermo- eiements for the temperature measuremOnt in metallurgical Card 2/3 furnaces. There are A, fi&ures, 2 table.3, and 26 references, Hot Preasing, of Chromic Boride Powder and Some 30-7/131-59-5-9/12 Properties of the Sintered Material .17 of which are Soviet. ASSOCIATION: Institut metallokeramiki i sDetsiallnykli splavov A'T USSR (Institute of Powder "letallurgy rtnd Special Alloys of the AS UkrSSR) Card 313 41, CZECH/34-59-6-4/23 AUTHORS: Samsonov, G. V., 36r, V. S. and Khrenova, L. t~2~ TITLE: Hardness and Brittleness of Compounds of a Metallic Nature (Tvrdost a k:Fehkost slo'udenin kovovjho charakteru) 0 Fe-MODICAL: Hutnicke Listy, 1959, Ur 6, pp 484-489 (Czechoslovakia) ABSTRACT: This is a revised version of a lecture given by Candidat4,,of Technical Sciences G. V. Samsonov in Prague ia.-'-,the Spring of 1958. The high hardness of compoundWd.f a metallic nature like carbides, nitrides, borides aml-silicides of the transient metals of the fourth to bh& eighth group of the periodic system is one of the most characteristic properties of these substances.'-.In view of the high brittleness of these compounds, Microhardness measurement appears to be the only suitable method of investigating their hardness. Earlier results obtained by the authors 'of this paper and other authors were published in earller work (Refs 1 and 2). In this paper the authors describe their studies'on the influence of loading of the diamond pyramid during measurement of the microhardness by the Soviet FMT-3 instrument on the measured mierohardness Card 1/3 values; the brittleness of the substances was evaluated CZECH/34-59-6-4/23 Hardness and Brittleness of -3ompounds of a Uetallic Nature from the characti;r of the indentation on the surface of test specimens during the indentation with the gyramid. The measured values of the microhardness, N kg/mm , obtained with loads of 20 to 200 g and of t e micro- brittleness Z for 31 carbides, nitrides and silicides are entered in Table 1, p 485. The microhardness studies of very hard substances, described in the paper, prove that a clearly defined relatioa exists between the microhardness and the magnitude of the applied load and this can be clearly seen from the data entered in Table 1 and from the graphs, Figs 1-4. The brittleness of the compounds was measured by a microhardness method described by N. 1. Ikornikova. (Ref 15). The method consists of making imprints with a diamond pyramid with various loads and evaluating the number and the character of the produced cracks and other detects. The thus determined results are entered in Table 2, p 488. It was found that the dependence of the microhardness Card 2/3 on the load is the same for materials with very high and with relatively low hardness values and appears to b 7 CZECH/34-59-6-4/23 Hardness and Brittleness of Compounds of a Metallic Nature governed by the character of the plastic deformation of the surface of the hard materials during the micro- hardness measurements. The brittleness characteristics determined in the work described in this paper are in agreement with brittleness values determined for some compounds by, other authors. The brittleness increases with decreasing square value of the defection of the centre of the molecular complexes during thermal oscillations in the crystal lattices of the compounds, i.e. it increases if the strength of the interatomic bonds increases and if the stress relaxation in the material decreases. The hardness of compounds of a metallic nature increases in the following order: s'licides, nitrides, carbides, borides, whilst the brittleness increases in the following order: silicides, borides, nitrides, carbides. There are 10 figures, 2 tables and 19 references, 1 of Card 3/3 which is Czech, 16 Soviet, 2 English. V/ S/137/W000/006/072/163 A052/A1O1 AUTHORS: Samsonov, G. V., Neshpor, V. S. TITLE: Thermoemissive properties of transition metals and their compounds with boron, carbon, nitrogen and PERIODICAL: Referativnyy zhurnal, Metallurgiya, no. 6, 1962, 32, abstract 6G247 (In collection: "Vopr. poroshk. metallurgii i prochn. materialov". Kiyev, All UkrSSR, no. 7, 1959, 99 - 104) TEXT: Published data relating to the electric resistance and the work func- tion of transition metals and their compounds with B, C. Na2 and Si are analyzed. Electric resistance of metals increases with the growth of the value (I/zd n), where Zd is the number of electrons In a vacant shell and n is the maL~quantum number. This is connected with an increased shielding effect of defective shello. For metals the work function decreases with an increase of k. For refractory +,compounds of carbide, boride and nitride type these dependences have a reversed ..~character, which is connected with the filling up of the holes in defective orbits by metalloid electrons and the corresponding decrease of the shielding effect. [Abstracter's note: Complete translation] R. Andriyevskly Card 1/1 V.. SAMSONOV. G.T. (Sassonov. 11.7.1; HISHFOR. T.S.: PAMMTO, Tu.B. Thervionic esdaslon properties of metal-like compowAs. Ukra f iz,,xhar. 4 w.~4,.50&-518 JI-Ag 159" (" 13:4) I& Inatitut metallokeramiki I spetseplavoy All USSR. (Thermlonic emission) (Metals) (yetalloide) MHIFOR V..S,,;-=OIAYWA, L.G. (Nikolaievag L.H.1; KARALINIK, S.M.; - MROLENKO, Yu. 1. Iz~vestlgation of the chwacteristic absorption of I M-s In silicides of transition astals. Ukr.fla.zbur. 4 no.6:814-815 U-1) 159, (MM 14:10~,., 1e Kiyevskiy gasudarstvennW universitet im. T.G.Shavehenko i Inatitut metallakeramiki i spetsiallzWkh splavov AN MSR. . (X-ray absorption) , (Transition metaa allAcides) 5(2)- SOV/78-4-9-5/44 AUTHORS: Neshpor, V. S., Samsonov, 0. V. TITLE: On the Problem of the Eleotronio Structure and the Condition for the Formation of Boride's.of the Type KeB 6 PERIODICAL: Zhurnal neorganicheakoy khtmii, 1959, Vol 4, Ur 9, PP 1967-1969 (USSR) ABSTRACT: The electrons necessary for tis formation of the 5 covalent bonds in the hexaborides cannot be supplied by boron)alone, two of them must be supplied by the metal (Refs 5, 6 . The formation oftbe hezaborides probably depends on the first and second ionization potentials of the metal. The values of the potentials determine the attractive force of the two valence electrons. In table 1 the ionization potentials of the metallic elements of the periodic system are listed. It is concluded that all the metals having first ionization potentials below 6.6 " 6.8 ev, and second ionization poten- tials below 11.5 - 12 ev are able to form hexaborides. In Card reference 8 it was proved that the bivalent metal in the BOT/78-4-9-5/44 On the Problem of the Electronic Structure and the Condition for the Formation of Borides of the Type KeB6 hexaboride may partially be substituted by sodium. The highest electron concentration at which this substitution still taken plaost In 1.6 electrons per metal atom. Thus$ it follows that the bond of the borine in MeB 6 requires 1.6 electrons, the remaining 0.4 electrons per metal atom probably being present as common electrons which would explain the comparatively high electrical conductivity of the hexaborides of bivalent metals. There are I table and 15 references, 10 of which are Soviet. ASSOCIATION: Inatitut metallokeramiki i spetsiallnykh splavov Akademii nauk USSR (Institute for Metal Ceramics and Special Alloys of the Academy of Sciences, UkrSSR) Card 2/3 SIOV/20-12 " -cri OJ49 On the Relationship Between the Work of Electron1teld. From Rexaborides of Alkali-Earth and Rare-Earth Metals and Their Electron Structure multiplicity and consequently also the highest doeree of electron bound state and the lowest de",ee of probability of f-d-transitions according to this curve corresponds to Eu and Gd. A comparison of the curves for the dependence of the work function 1p and the number k of terms on the nuclear charge number actually confirms their qualitative similarity. Finally, some partioulEwfeatures are pointed out. There are 1 figure, 1 table, and 15 references, 9 of which are Soviet. ASSOCIATION: Institut metallokeramiki I spetsiallnykh splavOV Akademii nauk USSR (Institute for Metal Ceramics and Special Alloys of the Academy of Sciences,UkrSSR) PRESENTED: June 6, 1958, by S. A. Vekshinakiy, Academician SUBMITTED: June 5, 1958 Card 313 AUTHOR: Neshpor, V.S. SOV/126-7-4-10/26 TITLE: On the Relationship between Certain Thermal Properties of Solids PERIODICAL: Fizika metallov i metallovedeniye, 1959, Vol 7, Nr 4, pp 559-564 (USSR) ABSTRACT: The author discusses the relationship between thermal properties of solids (eg melting point, Debye characteristic temperature, coefficient of thermal linear expansion, thermal conductivity etc) and elastic properties. Such relationships are important in estimation of mechanical strength of solids at elevated temperatures. Using formulae established earlier (Ref 2,4,5), the author deduces 01910-97 10-97 C 3.,3 (4) I-a:vcw = 4cZa i.e. Q/(C1/2y%M-%) is proportion to a-14. Here 0 is the Debye characteristic temperature;_ C is the molar or atomic specific heat (cal deg lmole-3 Card 1/6 or cal deg-1 g-atom-1); V is the molar or gram-atomic SOV/126-7-4-10/26 On the Relationship between Certain Thermal Properties of Solids volume (cm3); y is the density of the solid (g/cm3); M is the molecular or atomic weight in grams; a is the linear coefficient of the I expansion Fig I shows the dependence of ... V; (C %Y%M-R) on log a for cubic metals and carbides with metal-like etructure. The experimental points were taken from earlier work (Ref 2,5,7,B) and they lie somewhat lower than the theoretical (dashed) curve 1. In fact the experimental points lie on a line 2 which can be given analytically as 0 Cy (6) 'Y K"M Eq (6) can be used as a semi-empirical relationship in determination of 0 from known values of the thermal expansion coefficient %(it is easier to measure a-than 0). The Debye temperature is related to the melting point by Lindenmann's formula 1~21_ 0 = 137V 7!!~ = 1371LMV (7) Card 2/6 24V SOV/126-7-4-lo/26 On the Relationship between Certain Thermal Properties of Solids where T. is the melting point on the absolute scale. Fig 2 s i4r_U in logarithmic coordinates. the dependence of Q/(TV4 3M on T.. A dashed line (1) represents Eq (7). Experimental points taken from published work (Ref 2,5s7 and 8) lie around the curve 2. It follows therefore, that Lindemann's formula does not represent a mathematically correct relationship between 9 and Ts and expresses only the fact that. at given values of the molecular weight, solids with high melting points have high Debye temperatures. To find an improved relationship between the Debye temperature and the melting point, the author used Eq (4) and the relationship between the coefficient of thermal expansion and the melting point. The latter relationship is shown in Fig 3. The points representing metals with cubic and hexagonal closely packed lattices and metal-like carbides, nitrides and borides of transition twetals lie on the lower curve of Fig 3. The points representing alkali halides lie on the upper curve of Fig 3, because their linear expansion coefficients are higher (higher repulsive forces exist Card 3/6 in ionic crystals). The two curves of Fig 3 are redrawn sov/i26-7-4-io/26 On the Relationship between Certain Thermal Properties of Solids in logarithmic coordinates in Fig 4: line 1 of Fig 4 corresponds to metals and compounds with metal-like structure and line 2 represents alkali halides. Fig 4 shows that the linear expansion coefficient is given by at = kT.1-17, where k =-0-0724 for metals and metal-like compounds and k =~0-115 for alkali halides. Substituting the relationship ap = kT;1-17 into Eq (4), a relationship is obtained between the Debye temperature and the melting point for metals and metal-like compounds 0 = 41.08 ToO058) =C2/3 (13) M~6 This equation is represented by a dashed line in Fig 5 and the experimental points are seen to lie around another line 2 which has a different slope. The experimental points of Fig 5 lead to a semi-empirical relationship between the Debye temperature and the melting point 0.73 r 12-45 Ts V CY_r5 (15) Card 4/6 MJ6 SOV/126-7-4-10/26 On the Relationship between Certain Thermal Properties of Solids Assuming that the linear expansion coefficient is inversely proportional to the melting point (this assumption does not differ greatly from at =:kT;'.)-7 and substituting this proportionality into Eq we find that a const CT (16) 4 72vi which differs from Lindenmann's formula (Eq 7) by the presence of the specific heat under the square-root sign. Using the inverse proportionality between the elastic modulus and the linear thermal expansion coefficient (Eq 1) we find that 0 = const Ts (17) ;!Twos MV which has the same form as that of Lindeamann's Card 5/6 formula. There are 5 figures and 10 references, 7 of SOV/126-7-4-io/2-6 On the Relationship between Certain Thermal Properties of Solids irhich are So-iet, 2 German and I English. ASSOCIATIONtInstitut metallokeramiki i spetsiallnykh splavov AN USSR (Metal-Ceramic and Special Alloy Institute, AS UkrSSR) SUBMITTED; *September 27, 1957 Card 6/6 676S6 /&I M.20 /#9- 6 / 00 SOV/126-8-4-19/22 AUTHORS: Samsonov, G.V., hpor,-V,&- and Khrenova., L.H TITLE: Hardness and Brittleness of Metalloid Compounds PERIODICAL: Fizika metallov i metallovedeniye, 19592 Vol 8, Nr 4, pp 622-630 (USSR) AMTRACT: apecimens oAi ~~r 'h 71a k1 IW- I El-a v x'I '~l t 6- It a I s Q " I JLa and IIQ_e borldes anr+1'Zr,'--!46b-h Cr Mo, W,qF9jk1Co and'-Vi I I I I I - silicides2 of limiting phase composition, "re made b7y sintering powdersi%f these compounds by hot pressing with subse4-ulein-'Flong annealing at a high temperature in order to remove internal stresses. Hicrosections made from these specimens were etched in order to expose the grain boundaries and to remove the surface layer which had been cold worked during grinding. The microhardness was tested with a PMT-3 instrument. Loads of 20-200 g were used. The exDeriments have shown that the micro- hardness numbers do-pond on the load used, and this relationship is beyond the limits of accuracy of the measurements. The relationship between microhardness Card number and load was first established by Bochvar at al (Ref 4) for relatively soft materials Ou, Za and Armco iron). In other papers (Refs 5-7) the relationship 67696 sov/126-8-4-19/22 Hardness and Brittleness of Metalloid Compounds between microhardness numbeysand load for other metallic and non-metallic materialsOwas established. Gogoberidze et al note that the relationship betveen microhardness mimber and load appears to be of a general nature, as the apparatus for testing the micro- hardness, even if specially regulated so as to indicate microhardness numbers for a given material which are independent of the load, nevertheless shows this relationship in the investigation of harder materials. However, other authors (Refs 97 10) insist that the microhardness mi ber is independent of the load applied. Investigations carried out in this work of the micro- hardness of very hard materials have confirmed in all cases the existence of a definite relationship between microhardness numbers and load applied (Figs 1-1f). In order to estimate the brittleness of metalloid compounds a micro-brittleness method was used (having been first suggested by Ikornikova, Ref 15) for the estimation of Card the brittleness of carborundum,i!r The essence of this 2/?+ method consists in taking impressions of the diamond pyramid of the PMT-3 instrument at various loads and 676% SOV/126-8-4-19/22 Hardness and Brittlene,_3 of Metalloid Compounds estimating the number and nature of cracks and other defects thereby arising. In order to lower the subjectiveness if this estimation a so-called average brittleness mark is introduced which is calculated according to the degree of destruction shown by the impression. The estimation of the degree of destruction is carried out according to a 5-mark scale (,,Joe Fig 5 and Table 1). Pigs 6 and 7 show the dependence of the summary mark of destruction of borides and silicides, respectively, on load. Table 2 shows the brittleness characteristics of metalloid compounds. The authors arrive at the following conclusionst The microhardness number depends on the load at which the investigation is carried out. The nature of the relationship between microhardness number and load of materials with very great and comparatively low hardness is identical and appears to be due to the Card nature of plastic deformation of the surface of hard 3/7+ bodies In microhardness testing. The brittleness characteristics of metalloid compounds obtained by the microbrittleness methods in this work agree satisfactorily a--*" 67696 SOV/126-8-1+-19/22 Hardness and Brittleness of Hetalloid Compounds.. with those obtained by the author earlier for several compounds. The brittleness of compounds increases with decrease in mean square displacement of molecular complex centres in the crystal lattices of the compounds, i.e. with increase in rigidity in the interatomic bond and with decrease in the POS3ibilities of stress relaxations in the material. The hardness of metalloid compounds increases in the order silicide-nitride-carbide-boride,, and the brittleness Card increases in the order silicide-boride-nitride-carbide. brA There are 7 figures, 2 tables and 18 references, of which 16 are Soviet and 2 English. ASSOCIATION: Institut metallokeramiki i spetsiallnykh splavov AN USSR (Institute of-MetalloceramIcs. and ftecial Alloys, SUBMITTED: November 1, 1958 69394 SOVAN-59-4-8394 Translation from.-, Referatimw zhurnal, Metalluxglya, 1959, Nr 4..' P 151 (USSIRI) )-4-2140 AUTHORS% samsonoy, G'V Witrides and Silloides of TITLE.- On Superconductivity of Borides~ qMbides" Transition Ketals PMODICAL: Sb.',nauchn. tr. Naucbno-tekhn. o-va tsveta. metallurSti, Moscow, in-t t8vetn.iA* i a. ur 29. pp 361 - 366 ABSTRAM- The authorsanalyze literature data on critical temperatures To in the transition to the superconducting state of silioldes, borides, -arbides and nitrides of transition metals. The values of T for MeSi, KeB, MeC C and MON compounds are connected with the dispersing (accepting) capacity of the metal atom and the magnitude of the Ionization potential of the metall*Id. The dispersing capacity of atoms or transition metals is apprDx1mately characterized by the I/nN ratio, where n Is the number of electrons In the Incomplete d-lavel of the m*W at=, and N is the main quantwi number of the level. A decrease of the 1/nN number in the transition from Ti, Zr, V, fff to TA, Nb, W, No, I.e., from 0.167 - 0. 10 Card 1/2 to 0.05 - 0.067, Is accompanied by a sharp Increase In To of the 1/0 69394 SOV/137-59-4-8394 On Superconductivity- of Borldes, Carbides, Nitrides and Silicides of Tramsit-lon Metals corresponding compounds of these metals. In the MeSi ---P MeB -+ MeC ---* MeN series an inorease'of T was cbgerved, due to the difference In icalzatlon potentials of metalloid atoms and to ?he pecullaritles of the crystalline struot=,e, of the compotmds. It is mentioned that in a number of cases the value of To increases with a higher mtt'alloii content in the phasets. There are 31 bibliographicil titles. Ya.L. Card 2/21 PffASE I BOOK SOV/4347 Akadaudya naW-. Ukrainskay SSR. Institut metallokerandki i spetsiallnykh splavov. Seminar po zharostoykim materialam Trudyp vyp. no. 5 (Transactions of the Academy of Sciences,, Ukrainian SSR, Institute of Metal Ceramics and Special Alloys., Seminar on Beat Resistant Materialst 116. 5) Kiyev., Xzd-vo AN Ukrainskoy SSR, 1960. 63 p. 2,000 copies printed. Ed. of Publishing ffouse: LV. Kisina; Thch. Ed.: AA. Natveychukj Editorial Board: G.V. Samsonov (Resp. Ed.)p I.N. Frantsevich, V,V. Ortgorlyeva, A.Z. Ken'shikov, and M.1. Korsunskly. PURPOSE: The book is intended for engineers., scientific workers and students specializing in refractory metals and their compoundsp powder metallurgy,, electronics,, machine building and physical metallurgy in schools of higher technical elucation. COVERNE: Thi3 collection of papersporiginally presented at the Seminar on Heat Resistant Katerials in Kiyev on June 13-June 17, 1958, Card 1/ 4 Transactions of the Academy of Sciences (Cont.) SMA347 discusses the physical properties and prodmetion technology of refractory metals and their metal-like compounds with boronp carbons nitrogen.. and silicon. Tne results of investigations of the absorption and emission spectra of niabian and chromium compounds.. processes of joint diffusion of two tr1ements In metals,, and data or phenomenological studies of physical properties of metal-like phases axe presented. Methods of processing rare metals and refractory compounds in making powders and various articles used In many fields of modern technology are analyzed in detail. Several articles discuss the particular problem of powder metallurgy of ordinary metals and alloys. The papers reflect work performd at the following institutions: Tnatitut metallokaramiki I spetsiallnykh splawov AN UM (Institute of Metal Ceramics and Special Alloys,, Academy of Sciences UkrM)., Gasudarstvennyy institut prikladno7 kbi-Ii (State Institute of Applied Chemistry) Leningrad# Kharlkovskiy politekhnicheskiy Institut (Khar1kov Poly- technic Inatitute) . Institat fiziki ~metallov AN SSM (Institute of the Physics of Netalas Ac&tewj.of Sciences UM)., Sverdlovskly gosudarstvennyy universitet (srverdlo"ic state university)., vrmp; ToNrMbEECT., VMXW h,, rustitut metallargit AN USM (Institute of Ketallurgy., Academy of Sciences UkrSM) VNIM# fil-MR-He MMs Eforllwv kly politekhnicheskly Institut (Gorildy Polytechnic Institute)so and Yloskov;skiy elektrolampovyy z&md (Moscow Electric Bd1b Plant). References accompany Individual articles, Card 2/4 Transactions of the Academy of Sciences (Cont.) SWA347 TABU OF COMM Introduction 3 Neshpor V 5 Physical Properties of Metal-Like Compounds 5 Karsunskiys M.I.,, and Ya. Ye. ale-radn. ftission Bands L and L of Niobium in ftN., NbC and NbB2 JB2 r 1 15 Questions and Answers 19 Discussions 20 Nemnonov.. S.A.., and A.Z. Wen'shikov. KZ pectra of Chromium Absorption in Boridess Carbides, Nitridep, and Some Other Compounds 21 Diecussione: 24 Frantsevich., ]:,N,.# and A.N. Pilyankavich. Comparative Brittleness of Refractory Conipaunds 28 questions tind Ansvera' 36 Card 3/4 Transactions oj! the Academy of Sciences (Cont.) SOV/4347 Arkharovo V.I.,, and V.W. M3nev. Joint Diffusion of Two Elements in Hard Metal 37 Questions axid. Answers 40 Discussions 40 Smmonov,, G.V,, and N.N. Zhuravlev. Structure and Properties of Borides of Faxe-Earth Metals 45 Questions ad answers 51 Kudrymv,tsev, V.,I.p and G.V.Sofronov. Precision Determination of Lattice Intervas of Boron Carbide of B -:f 07ff Composition According to Ekentgonogram Obtained lned;. on Large Scattering Angles (0-0 900) 52 Questions mid Answers 60 Discussions 61 AVAILME: Library of Congress Card 4/4 JA/dvm/me n-18-60 27992 2,& 40 SA94/61/000/004/035/052 D266/0302 AUTHOR.; Samsonov, G.V. and Nesh o TITIE: Alloys of rare metals with bor and silicon for some purposes of electrical and radioengineering PERIODICAL: Referativnyy zhurnal. Avtomatika i radiaelektronika, no. 4. 1961t 3, abstract 4 G15 (V sb. Redk. metally i splavy, M., Metallurgizdat, 1960, 392-417) TEXT: The conditions of obtaining..silicides--and borides of rare metals are investigated and their physical properties are studied for possible application. The.silicides.are.obtained by heating the mixture- of ..the. component& - in -powdered form.at a pressure of 2.90 kg/cm2 and at a temperature of L300-21500C. The synthesis of the borides is carried out by utilizing the interaction of metal oxides with baroncarbide.and carbon in vacuum. The structure of the obitained alloys- is.- investigated -and their. crystaL.structure is determined.- The hexaborides are distinguished by their low work Card 1/2