SCIENTIFIC ABSTRACT KELER, E.K. - KELER, E.K.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R000721510005-0
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: June 13, 2000
• Sequence Number: 5
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

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KrILIrTA2 E.
TASTINO RAKPaWILY NATHRIAtA POR 'curveiatmoit coincide, but for the Intervai 3304 to3'2'f)*C
ITIVIST. , 1113131 *st
The angle of I
n
,'~Oy, -37 (!9451.Z-A brief descrip- the process Is apparently different.
ition Is given of an apparatus, equipped with a platinum. thOpeclMen In the cold state determined hefore and after I
Ifurna", for testing refractory materials f-tr twist. Dln- tinting, was the same, the ~astlc properties of the body. 1
i therefore, were not changed during the ex
,Krntns,g!ve the deformation for the following rase%: (1) Inient. Con-
consta it load. even and continuous rise in tetitperaturv: siderable Increase In the elasticity of the My during the.
,(2) constant Inad, stepwise rise In temperature: wid (3) period of enantiotrople recrystallization of the tridymite
variable load, stepwise ri%e In terr., %rature. Froin 'the anti criftoballte (to 300*C) is accompanied by subsequent
shape of the curves It Is assumed thai ~,,iartx acquires great consolidation as a result of which the body reaches (at;
001
'Onobility only for a short period of time while there Is a 1) Its Inlaal rigidity. From OW on, plastic deforma-,
:regrouping of the atoms in its crystalline lattice. if the tlon starts and develops rapidly with increasing tempera-
11 body is strained toward deformation at that moment (about ture. When testing prider variable loads and stepwise;
675 C.), there 13 considerable displaceinent of the particles. increases In tcmperatfore. the deformation curve has a'
.11thebodyishfatedin the free condition above the Mtlcsl different shape. From room temperature up to 700*C.,
temperature, the crystalline lattice of the a-quartz nequires, ~thejre Is uninterrupted consolidation of the body. There
stability, and additional Mormation does not take place, was no Increase in elasticity within the interval 200* to
[at. e.g., 600*C.). Tests were also MWIC With I
under load 1 .300*. Above OWC. plastic deformation was less notice-
,specimens cluting both risini and fallinr temperatures. I ahle..-
Yor the Interval 9W* to .130 C. the eml ng and heating!
t

E0 K.

Keler, E. K., and Abr ,arn6va V N. liti-Romn rim
PT?RTWTM.q'WCRM NIODUCTSSUiTAIlt.11 VOR I.I.SING. Tilt,*
MIATTS OP ELI-21 _Pum%AeRs, Ognempary. 11 m3n
(1.44ro). .-BrieTricroutifs are given of re4earch activities at
the 1xiiingrad Institute of Refractories to drVel9p method-i'
()l ttifing the abri.0011 and Impart reshtilicc of blast-lur.
nace refractories. The effects of existitiF Russian nictliml-;
of maniOnctine co these two charactcriMics were also iii.
vectfgteti. rwn variation-tof brick innutifachire nre out.
lined. One nietb(xl utilizes Chasav-Yar clny PK to pro-
duce brick -mitable for lining the tipper two-thirds sectiom
of the shaft, and the other method uses Lnhibisk vlays
(Grnfle 1) for the lower otic-third %ection. The specifica.
tions for brick for the lower mccilon are ns follows: (a)
IAI,01 + Tiol. iiat lower than :190/,,. (b) lint.
below ITICIT.. (C) Vollittle Pormkity 110t over 120". (d) itim
absorption not over 0.2%. W compressive strength not
less than 4M kg./cm.l. and (1) abrasion (Dati%chinger) not
over 0,10 Kin./cIn.': for brick of the tipper section the re.
pecilve values were (4) tiot lower than 24P/ji. (b) not below
NIOT., (c) not over 10%. (d) not over 0 '2 (a) not less
I
than MA kg nti(LU I
J.tot oter 0. In xii 7cm.1

AUINCR Int)(11 =f
Alik'Al I 1~Its
Keler, E. K. MfO115 111' F)Rtj',RAj1NjS'G. ADDUTIONAL
XIAINK141F A ADDITIONAL (-,ftow-rit. ov KFURACTORM-i
Of ntu/ilwy. It 17-81 9-1-21 ( 1114(1):- K. rrp?Tr,__m_i_w_or1-
started In 1010at the Intituteof Rrfrat-formt(Leningrad)
to refine the Mr-lbods for determliflur r0rat slititik-age mtd
expansion which %vns ncvcr finistit4l. For mn~t refrac.
torieu, colivOncy i4 obtained rifler 3 hr. tit the fitini lem-
perature; for cbtome-magne%itci the dimritsittits continued
to increase during the 3-fir. test sn that -t(filitionit investi.
gationispe_pired tociett-r-niine the liifviL
_~i_ie_ittof'thc It'rick- ik:j% ra~iiti(l Uii~,itisfitrfory hrraiv;c of tin-
"ven rhaitge% of the brick- Defertifliviticiii of vriftitite
%brinkagc by hydrostatic weighing tit ;Ilcrcury VVIS A1,O
found unsati5factory. The volume wa detrnnined with
sufficient accuracy by hydrostatic weighing in writer aftrr
_At raLion-with rater.

t

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RU2ACMZ3 IM SMOUCK 9101-ALUNIVA =W AR HIGH-ass-
SURX BOUM MUM. S.JL, Qu==x. 12 [101 461-
67 (1947). - BrIa worm Aadillrii'(17 *lay analyzing S102 43.25,
S03 0-50,
TiO2 2.24, A]~Oj 36.74t r*03 1.17, CaO 0.12, MgO 0.10,
920 0.22, -20 0.409 and IpItIon loss 13.79f and (2) grog made
from the above clay at SW , 1320% m4 1450 C. Clay analyzing
$102 45-021 T1% 4201 37-66a re 03 2*34, and ignition loss 13,12%
was used as hinder. Brick were 4- a by plastic molding and by
aseldry pressina and fired at 1300 and 2450% The refteo-
toriness of all shapes ranged from..1770 to IRSO'. Oro& made at
1450* offers no advanteVe ocapffed with that "do at 1320)
at tamparat're of 2/#50* U"reacmanded only in those cases.-In
which the brick must have a high dimensional accuracy (*an-
otency). Grog made at SW*C. Increases the density and strength
of the brick considerably uA lowers the thermal stability a littlee
SsmLdry pressing is preferred to the plastic method as far to all
ita~ Sivi-il-T-w- - 910.. 43.01t
14AOSI -A I foloo-1 Nit goo got il -iw got
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jell VANA1110 1111081 Ca a 41
A__L_.L 11 _J

I
as

'as
00
properties of PW tirlok we oonowned. Firing Wwuld be oon-
*
*41
duatod at UW to 14W. Firing at 2450
hike no advantem as 00
far as porosUps, strength, and thermal. stability are coooornW# biAt 001
00 It Increasse stebUity, vAdw load and Improwe the reheat shrink- of
00 ~ge som*Aats Win at lk% - Is reocemanded only in %boo* 00
00 cavea In Alab conatut vobm and stabUlty under load we
0
00 of primary Importance, Optimum properties a* obtainable
0 :
0
09 with (1) a plastic six of 40 clay " W% grog mde st 1320 00
00 and with ain miss up to *10 and (2) 4 Isaldry Six of 40
W 10*
olay and
iSrog mado at XW end vltb-.,a grain miss up to 4 00
m. Maximum sleg restatenco to obtainable vIth a somidry six
* 00
of 30 clay and 70% SvoS mode at 800
and with a grain size up
00

* to B.Z.K. 1018
0 00
SO 0 of
00 00
60 00

Keler, E.I. "Methods of determining the thermal properties of ceramic raw
material," in symposium: Syrlyevyya reenrsy tonkokeram. prom-sti SSSR
i puti ikh isT)olIzpv&niya, Moscow-Leningrad, 1948, P. 103-13
SO: U42888, Letopis ZhurnalInykh Statey, No. 1, 1949

- KELER, E. K. .. Pro--%
Dr. Technical Sci.
"The technical t,~sting of refractory meterials"
Ogneupory, No. 4, 1948

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Out Aut"Co .09k NATMALS WDIS

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Ugmt/Engineering Refractories, Rav Jun 51
Mateftal
"Zhermal Characteristic of Fire Clayso" Prof E. K.
Keler, Dr Tech Sci, Z. I. Veselova, Sr Engr, Lenin-
ch grad Inst of Refra~tories
2 "Ogneupory" No 6, pp 249-257
Study of clays from 23 major U3rR deposits shows
only 2 basic mineral types: kaolins and hydromica
or monothermic type. Intermediate types are mixts
of the 2. Complex thermal anal, conducted as single
expt on one working shift, gives complete behavior
LO 183T59,
ussR/zngineering Refractories, Raw Jun 51.
Material (Contd)
cbaracterl:stic of material on heating, aiding effi-
cient use of raw materials and correct burning of
refractories.
183T59
Le

LVW/Bngineering - Yo=dry, Bquiptsent Doc 51
"Concerning Standardization of Technical Require-
ments on Steel Poia-Ing Equipment," Prof E. K. Keller,
Dr.Tech Sci, M. M. Bluvshteyn, Cand Tech f-ci, Lenlli-
'grad Inst of Refractories
"Ogneupory" No 12, 1* 551-539
States insufficient attention to standardization of
special refractories and discusses followlng sub-
jects: nonmetallic inclusions in steels in connec-
tion vith pouring equipment and chem'compn of re-
fractorieg; relatidno among various properties of
pouring'equIpment and standardization of its
1IM/ingineering Foundry, Equipment Dec 51
(Contd)
Operational qualities; 'testing method secu~:U*
correct evaluation of quality of pouring equipment
according to basic requirements of metallurgy.
198TI9

Thannal ebaracteristics of relfractalry clays, H. X.
-!)jPkj-vW Z 1, vewitiva (t-c"Invail 10*1, Refracloclrs)~
j:%tisPk-.v 16. 240 IMIMI I -TA11111.4ttil 4lkI grfl~IIICAI
r"utiq it( differtntial thermal Analyw% of ck" Solt IM4111S
from ZI bill-viAnt iferil-ife in the Awiet Vivinlit Arc tit cit.
Re%ulli milwate thr ritinfe"tv tit only 2 bA%ic inincirahsm-A
I Y;w*: ka-4inke clav% and hydronvicAcirms ("nionothir-
Mite" I Intritn"ItAt~tTric Clay% CM*kt Appatflitly
,I MiNt, it( the- 1. An rn.P-thcrinal fil-ct hw,ioelay, A.
notircl at fill) r"r. The flf%t cilothrrmal effect for litt,,f
.laws "a, CA)-wrvftl At W210 1111W. file k.4ohnit at f*11 11"l1,
A ~,aul i,rulothrtm.d ff--t f,w ka,.lins *A* otticl at i-.-.W
and fix MiC;4CT0U-. 1OW-1111offillS CIA" It 1140-11PO', As
hint
(C11011IM11.11) effect WAS VMCd In only 13 of the :11 IltatrtiAlS
lc"fNI Thermocrums were alito obtained of ksolin~My
Inists With I"creating elty crieffent, the endothernial r(.
In-l 1144'tVAUSI I lhUll IM* 10 :W) And Illf 110011 Shill"I ItIll"
fW11o* fix k4ohn tit ll:W)* Its clAy- T1w I%rt kiallinitir ~An-
I hef mal effect alin decTrasted %I caddy (from Ito* to 14 *). its
lJositian was snaloccitts to that of knoilit (970*) and only
pum Clay 4K"MI 4 sm4l ellect At W-M*- Tbo se"inA "0,
thermal effect W&S noted file ad aMpka. it$ MASON& til'
CTrA"I 911MIUARY (film CIAT tu kAut" ((- 13, to a*,.
A,hfn. of :017v clay did li-I ckA"Xc if' 1%*'gkxs 'ZN)*);
further addif. of CIAY C4uwd At first a Sitar th n
gradual drop In let - of this Orict (to MO-17" Clay)& I
Addo. of clay cau=p(li'timt &nd coaslatient chaug" in the
'brinkaffe curvr* of 11401jUSAU-1101111PUS to chang" in the ther-
op,mv, 'Ibrink.tar duting a,rhydcat ion diz~pcwerrd vAd-
... hFinkast during
UAIIY Wid file 111ASIOU'le All" 'tltrn%'ty of
be firit flothri,111al rfjcCt JM-t~,cd CtdUAIIY. I1W mllW
temps, of sinterinx wrfr ArwillallY mllic"l- U r 1. K.

BCS
I 1371L 11w at foch*d "h fw the stmilodke"m of
*" and M. N. lkuvvl%VN (Ormwhwy. to. $31 193'lw~ I,=
lf*4jklM StSIVII IwAlet literature an the caum of non-imullic wt~ im, Ow
and the mlawtv nwits o(siticcow and Awlay ruaw twick& art docussed. I'Awasive
Ojipts. with grog products dwvmd tbw thertnel stability is not rclated in any simmok
trunner with porosity, crushing stra0h.-pumembill -of AJAh conWL Data SM
tabulated to show the relaborahip www" the themmy'llatwily and other properties of
fimcky priklum. Mo" egpW am re"hod for the itandaribmawn of the thenew
stability. but (Of the 01011 being the (INNOWl"S tOlAS are 1116WINTIOMed, (I 19 mamon of
runner bckke t3 from each axWer4MMI am W*ttd by the nWhod of the LenuWad
Refractorks Institute (healing of runners from insido. The tinia taken by watcl to
P"wirate through the cracks forned should be not kit than 23 mc. Sampicarinamthe
4 nutin Russian supplim show valucs of9O. 78.71 mid 30mr- WnoiNr plam Sim 13
wc.). 42) 1 dmv" lqxw of each of 3 consionnictus) art dried at I 10'C.. .xx*d to
rom tcrnp. and then suddet0y heated thy pbdno intoa hot fwammi toKW C. The
IM11*11's PhoulJ n4m be craded w tht extent that they Lan be pulW apart in the ban&
I I-INICS.)

USSRA-ngineering - Refractories, Testing APr 52
"Standard Sq4Wnt for Testing Refractories Under
Load at High Temperatures," Prof E.K. Keller, Dr
Tech Sci, Leningrad Inst of Refractories
"Ogneupory" No 4, yp 169-172
Testing eqmipment, designed at Inst of Refractories
in 1948, essentially consists of elec Kryptol fur-
nace, 3~oading system and reading device and permits
tests at.temp up to 1,750o, but, after replacing.
ordinary corundum tube in furnace by magnesite or
high-alumina tube, testing temp may be increased to
1,860-1,9000. Loads on specimens vary from 0.1 to
1.0 kj/iq (a.
22Or38

=J1 - N.A*- ----
-1. 1. - - GODINA I
Interaction in solid phases of zirconium dioxide with vagnesium
oxide, calcium and barium. Ognsupory 18 no.9:416-426 '53.
(MIRA 3.1: 10)
1,Inatitut khimil 6ilikatoy AN SSSR.
(Zirconium oxides) (Chemical reactions)

KELM 1 4 1 - 1. - -- - - - - - -
1
R.-E.
2. U04V (600)
4. Kaolin
7. gehavior of kaolin on heating. Usp. khim. 22 no. 3 1953
9. Monthl List of Russian Accessions, Library of Congress, June 1953, Uncl.

I d LZ nna- m diam . L- Maced Ln a cemmtc
i
'mc ar
c~p 150 mm. h[Sh Knd 40 turn. faMe diAm. Tlte Junctkm
04 9, iLimple- and (t digemnti4l thttmoccupk am located (n-
134e the cull. A Similar *=
ple of Inert materw IAW Is
alto p4ced im-.dc (hr cut).
plemd an top of the 5rimple, &ad diniemiaaal changes am
phateFraptdcally"cerded. Thek-sinwt.i2mL~orecacdwt
Wsuspcnding a siTnikir sample ott'sidt the ovtu, bal=cing
of 4
the 2 Saapf --#jag she dev;
T" I' 11-~ Kmnrflefl ur-" nf MAGEr

s s
Tht ItAo)RIIIIII K
prcl,,i. fr,m. Al(
r,ji-, d of Naj~ h, 0~,t,,- I n
ly. A 0"; A1.4 cw
,w;f filf.- 1,
0,
In-r,sity. Similar
(it 1. Nll0Vt'
of Y,rr~%tn- (,, f,irvi .Al.' I FI IL !wl-'Il

KILER, E.K., doktor tekhn.nauk; VESEIDVA, Z.I., starshiy, lnzh.-iseledovatel*
- -- .." - -...... - .
Device for continuons observation of additional shrinkage
processes in refractory mterials. Ogneupory 19 no-1:30-34
154o (MIRA 11:8)
l.Ioningradakiy institut ogneuporov.
(Rafraotory waterials) (Measuring instruments)

ImM, I.K., doktor tekhn.nauk, prof.
ractories" KjK. Strelov.
"Technical control in the mnufacture of ref
Reviewed by 3. Ko Keler. Ogneupor7 19 no.2:93-94 154, mm 11:8)
(Refractory materials-Q~mlity control)
(Strelov, K.K.) I

77A
K. KIEUM AND.M. N. 0111.
20 111 2a-
20" to 2u0'C. II..". Fra sharp, drop in crwhing
Strcligth, at I-Ifm)' to &it)*, it increasm. and Axwe SW* tu l(ft' it
drops wbstantially. %%'car resistance drops at 20' to 20)' by
(is) a%'CI;IgV of 3001yo; it AI)4)VC V~)* fit FJ(X)*, sill(i at S(k)*
it exccols flic valtur at rotali temperature by 0% (a,g ) A,
90-00' to 120-170* life ungle tit MIA iucrewwS sharply, approxi-
inately twice, At 200' to TIW strengthetsifig starts, and at
about YK)" the angle tit twibt is q.dn the saine its at ruota teni-
licraturc. liketo At 1.10*tti 2io' tllcfc
%va., it 4barp drop in moillului of Aicar duc to the inverii, 'it .,I
tritlyinits, :stiff erkilt,balite; utitive inversion tun1wr.stUrt,~,111"',
. lt~ thal
Al'ostil!"'ting. colvrd.iliou~ J l4vat t~lbility So"
Ili, 'ji- 1 0.4%, ."It. i.11, Flad f"v v 11W 1'' Ali", I
fit, IJL :11111 orwrifilsiv% tire (lux-rilicti.

OUR'
I ~ MR -1 "llom - If +

US's/chemistry - Silicates
Card 1/1 Pub. 22 - 20/45
Authors s Keler, E I.-, and. _tlodjn -a-, N. -A.
Title j Mechanism of formation of solid solutions in tho Zr 0270&O system
--Periodical --.1 ~--Doki-Aff-SSSR--- 103/2i-.247-150#'-Jul-3-lo-.1955--,--
Abstract I The reactions occurring betueen ZrO . and CaO during heating vere investd,_
gated, The formation of ZirConate as an intermediate phase during the
formation of solid solutions in the Zrq,.-CaO s7stem is explained. It is
shown that the reaction mechanism leadffig to the formation of solid
solutions is due to the f act that calcium oxide is more active than
sirconiun dioxide and assumes the role of a so-called covering reagent.
The conditions leading to the formation of solid solutions are diacuaae4.
Nine references: 5 Germ, 2 USSR and 2 USA (1929-1953). Graphs.
Institution t Acad. of So.# USSR, Inst. of Chem. of Silicates
Presented by : Academician S. I. Vollfkovichp February 19, 1955

k:z ), fz~
USSR/Chemical Technology. Chunicnl Products atil Their 1-9
Application Silicates. Glass. Ceramics. Binders.
Abs Jour Referat Zhur Khimiya, qo 4) 1957) 12577
Author Keler E.K., Kozlovskaya Ye.I.) Nosikov ON.
Title Det;rm:ina ion of Resilient Properties of Glass and Fine
Ceramics by the Ultrasonic Imp-alse Vethod
Orie Pub Steklo i keramika, 1956, No 5o 7-13
Abstract Investigations of the resilient properties of glass and
fine ceramics have been carried out by the ultrasonic
method developed by S.Ya. Sokolov, which is based on
periodic emission of short ultrasonic impulses and their
subsequent reception after passage over a given distan-
ce within the specimen. In the determinations is regis-
tered'the time t during which the ultrasound covers the
distance 3) and propagation velocity of the ultrasound
is determined. By means of suitable formidas a detera-i-
nation is made of the aisplacement modulus G,clasticity
Card 1/3 75

X/
USSR /themical Technology. Chemical Products 1-12
and Their Application
Silicates. Glass. Ceramics. Binders.
Abs Jour: Referat Zhur - Khimiya, No 9, 1957, 31577
Author : Keler E.K., Bluvshteyn M.N.
Title : Study of Elastic Deformations of Chromomagnesite
Refractories by the Method of Torsion at Room
Temperature and at High Temperatures
Orig Pub: Ogneupory, 1956, No 5, 217-221
Abstract: Determinations were made of modulus of elasticity
in shear G, at temperatures of 20, 300, 600, goo,
1100 and 1200*, and spring-back at the same tem-
peratures, during 15 minutes, on application and
removal of load bearing upon the sam les (pro-
cedure used, see RZhMekh, 1955J. 5857. The deter-
C ard 0
USSR //Chemical Technology. Chemical Products 1-12
and Their Application
Silicates. Glass. Ceramics. Binders.
Abs Jour: Referat Zhur - Khimiya, No 9, 1957, 31577
minations were carried out with bricks of the
following grades: magnesite, 3 chromomagnesite
ordinary, 2 bricks for vaults and 2 magnesite-
chromite for vaults. In the case of magnesite
brick the 0 remains practically unchanged on
heating up to 12000, while in chromomagnesite
it increases with temperature, and in the case
of the thermoBtable vault bricks G undergoes a
gradual decrease with rising temperature. The
spring-back of different grades of refractories
is also different. Determinations were made of
6' shear, linear expansion coefficient and
thermal stability of the refractories was calcu-
lated and compared with the experimental (on
C ard 24
----------
C ard 3/3

0 IRV

Category: USSR / physical Chemistry - Kinetics. Combustion.
Explosives. Topochemistry, Catalysis.
Abs Jour: Referat Zhur-Xhimiya, No 9.. 1957l 30039
Author Keler E. X. Glushkova V. B.
Inst -n-oVy-ven
Title : Conditions of Formation of Barium Silicates
Orig Pub: Zh. neorgan. kbimii, 1956, 1, No 10, 2283-2293
Abstract: By means of thermal, chemical, x-ray diffraction and microscopic
methods of analysis, it was ascertained that on heating of mixtures
of different composition, of the system BaCoj (I) - Sio"' (II),
regardless of the composition of the initial mixture, the inter-
action between I and 11 begins only at 7000, with formation of bar-
ium metasillcat;; (III). At temperatures of 8000 and above) barium
orthosilicate (IV) is formed. In mixtures containing much I~ at
about 10000, Is formed, in addition to IV, also tribarium silicate.
In mixtures containing much II, formation of III is observed only
Card 1/2 -13-
Category: USSR / physical Chemistry - Kinetics. Combustion.
Explosives. Topochemistry. Catalysis- B-9
Abs Jour: Referat Zhur-XhiMiYR, NO 9, 1957, 30039
above 2200'. Formation of Ba.,Si.30rand B9Si;JOj-Y by reactions
in the solid phase, does not occur. It was found that decrease
in volume of samples of I., which is noted at 600-8000, is due to
decrease in porosity as a result of collective crystallization,*
and not to a p02,ymorphous transformation. Increase in volume of
samples of I and II at 1000-12000, is due to increase in porosity
of the sazq5les, as a result of "swelling" of emitted COA in the
presence of liquid phase.. and due to the fact that the reaction
products have a larger molecular volume then the initial substan-
cea.
Card 2/2 -14-

JMCJZ~` OVIKA,'AUND.
it
44
wmitiL. -am
Th
the, (06iter
-X tfky!s wrm am-
Coll ii
of &~tatiftitt i1i m~kt. t il
L4

WE-r /C Ir I cz~
WMAM/Chemical Technology. Chemical Producta and their Applicati on. J-12
Glass. Ceramics. Building Materiale.
Abs Jour: Referat Zh--Kh-, No 6, 1957) 2.7698
Author E.K. IS--ler, Z-I- Veselova.
Title Determination of Elasticity Modulus of Refractory Materials
by Acoustic Method.
Orig Pab: An. Rom.-Sov. 14etalurgie sl constr. masini, 1956, 10, 110 3,
121-133.
Abstract: See translation in POhEhim, 1957, 5236.
Card 1/1 -85-

USSR/Chemilcal Technology. Chemical Products and Their Application Silicates.
Glass. Ceramics. Binders 1-9
Abst'Journal: Referat Zhur - Xhimiya, No 2, 1957, 5236
Author: Keler, E. K., Veselova, Z. I.
Institution: None
Title: Determination of Elasticity Modulus of Ceramic Materials by the Sonic
Method
Original
Publication: Ogpeupory, 1956,,AVo 1. 21-32
Abstract: The method is based on producing in the samples sonic wave oscilla-
tions and measuring the frequency of natural oscillations of the
sample. The instrument for measuring frequencies of mechanical
oscillations (IChMK-1) is produced by the Electrotechnical Institute
ime.ni Ullyanov (Lenin). Instrument data; frequency range measured
250-10.,000 hertz, power consumption 100 watt,, alternating current
feed of 100, 127 or 220 volt at a frequency of 50 hex-tz. As genera-
tor of oscillations is utilized a conventional electrodynamic
Card 1/2
USSR/Oh,mical Te:hrology. Chemical Products and Their Application -- Silicates.
Glass. Ceramics. Bindera, 1-9
Abst'Jol=al: Referat Zhur - Xhimiya, No 2, 1957, 5236
Abstract: loudspeaker with a cutdown diffuser. Advantage of the sonic method
over the static is speed of determination (1.5-2 minutes) and the
possibility to determine the modulus by using integral articles
(bricks). By the method unler consideration vere determined the
values of the elasticity modulus of a number of refractories., which
were found to be higher than the values of elasticity modulus de-
termined by the static method by 7-"%.
Card 2/2
OW

KELER, B.K.; VEMM, Z.I.
Mg. k"WM
Linear changes in grog batches in the course of burning and re-
peated heating. Ogneupory 21 no.3:114-122 '56. (MLRA 9:8)
1. Leningradskiy institut ogneuporov.
(Rofractory materials)

Ot z-
'. It
IN
Mir E. -1401
1 St

----------
'clctilo;i ot 'Juivill DO.Quat7vit-b

F7 - --------- --
f
f) 89 k X
F�R
Im
Q

137-58-4-6474
Translation from: Referativnyy zhurnal, Metallurgiya, 1958, Nr 4, p 20 (USSR)
AUTHOR: Keler, E. K.
TITLE: Modern Thermornechanical Methods of Investigating the Prop-
erties and Assessing the Qualities of Refractory Raw Mater-
ials and Products (Sovremennyye te rmomekha niche skiye metody
issledovaniya svoystv i otsenka knchestva ogneupornogo j3yrlya
i materialov)
PERIODICAL: Tr. Nauchno-tekhn. o-va chernoy metallurgii. M-vo cher-
noy metallurgii SSSR, 1957, Vol 12, pp 57-61. Diskus.
pp 153-169
ABSTRACT: A brief listing and description of the methods employed in
engineering testing of refractories is presented: 1) determina-
tion of physical constants, 2) special variants of g--neral meth-
ods (determination of chernical stability at high temperature,
resistance to slags, etc. ). A number of ideas are put forth on
the improvement and organization of control of the quality of.
refractories and raw materials for them at industrial estab-
lishments.
Card 1/1 S. G.
1. Refractory materials--Properties 2. Refractory materials
--Applications

X-1 c1~
20-2-16/5o
AUTHORS: Keler, E. K. Kozlomiayaa, Ye. I.
TITLE% The Elastic Properties of Glass (Ob upn.,gikh 3VOy3tVakh Stekla)
0
PERIODICAL: Doklady All SSSR, 1957, Vol. 116, lTr 2, p!). 221 .. 224 fUSSR)
ABSTRAM The present paper contains experiment-cd data concernin6, the mod-i-
fication of the elastic properties of -1,ass in the case of a tor-
sion in dependrnce on temperatnre. It ij known that gjasfl, bOlow
the temperature at which joftoning bu,~,ino, is a brittle solid body,
and at room temperature it obeys Hoolke's lart up -to the point of
fracture. A diagram shows the curve deformation temperature of
glass in the case of constant stross as well as 'he experimental
curves of momentary elastic, delayed elBtic, and remanent deforma-
tion. In the interval between 200 and the temperature T, of begin-
ning softening there is only a momentaneous. elastic deformation.
In the interval between T and the temperature of the beginning of
the delay of the deformation a delayad-slastic ard a remanent de-
formation were observed. As soon as 720 is attainod, the elaztic
deformations vanish nearly entirely, and inotead remanent defor-
mation develops. A second diagram illustrates the curve atrosr; de-
formation of glai3o, i.o. the hyntorc,~aia loops for different sta.-as
card 1/1, of a truly elastic behavior of glass in the interv~Ll of temperatures
20-2-16/50
The Elastic Properties of Glass
of between 200 and T . The third diarram illustrates the deper-
dence of defornation Gon time. '.0he domains of these curves corres-
pond to the following processes: momentary elLstic dEfornation at
the moment of stress, delayed elastic deform-ition, plastic flow,
momentary-elastic restoration after removal of stre.9.3, delayed-ela-
stic restoration. The exporimental data foiind 3erved as a basis of
the determination of the shearin- modulun of -1,iss when heated. The
dependence of the pr.-perties of glatis on temperature studied here
was observed by several authors in the case of different types of
glass such as window glass, various types Of optilal. glass, and in
sodium-boron silicate Class. Also pure quartz -laos was investigated.
In conclusion somethina was said about 'the physical-chemical poces-
ses upon which the here discussed phenomena are based. There are
4 fi.-ures and 1 Slavic reference.
PRESENTED: May 28, 1957, by A. A. Lebadev, Academician
SUBMITTED: July 6, 1957
AVAILABLE: Library of Congress
Card 2/2
;',v

KELLER, E. K.
"On the Behaviour of Kaolin During Heating."
paper distributed at the International Clay Mineralogy Congress in Brussels, Belgium,
I - 5 Jul 58.
Comment: B-3,116,859.

15W
AUTHORS:
TITLE:
Keler, E. K., Andreyeva, A. B. SOV/131-50-12-5/10
The Influence of Admixtures and Additions of Titanium Dioxide
Upon the Stabilization Process of Zirconium Dioxide (Vliyaniye
primosey i dobavok dvuokiBi titans, na protsess stabilizataii
dvuokisi tsirkoniya)
PERIODICAL: Ogneupory, 1950, lir 129 PP 552 - 550 (USSR)
ABSTRACT: Commercial zirconium dioxide (Table 1) and chemically
pure zirconium dioxide with a Zr02 content of 99.6%
served as initial material. Carbonates of magnesium and
calcium of the "Ch" type served as stabilizing additions.
A decrease in shrinkage and an increase in thermal stability
were attained by the use of zirconium dioxide, which was
burnt up to a temperature of 17000, whereas the sintering
has become worse. Figure 1 shows the linear changes of
samples with a content of 9ela Zr02 + 10% MgOv and figure
2 presents the linear change of Zr021 which was burnt
at 17000, with the characteristic loop of polymorphous
Card 113 transformation. The formation of mixed crystals of Zr02

The Influence of Admixtures and Additions of Titanium SOV/131-58-12-5/10
Dioxide Upon the Stabilization Procens of Zirconium Dioxide
with calcium oxide at a lower temperature than with
magnesium oxide Is confirmed also by chemical phase ana-
lyses (Table 2). Figure 3 shows the influence which is
exercised by 2% Tio 2 upon the stabilization of ZrO 2
in the mixture 90;,.' ZrO + 1V,. MgO, and that in the
.2
mixture 90 ZrO 2 + 1 Vio CaO is given in table 4. Figure 5
shows tile linear changes of the samples with a content
of 85% ZrO 2 + 15',f- L190 (mol) at a biirning temperature of
16000. Table 3 presents the chemical phase analysis
of samples with pure and commercial ZrO 2. The experimental
results can be neer, from table 4. Fiaurd 6 allows the
linear changen of the samples with 9Cr;fo ZrO 2+ 1 CrP1 MgO
after burning at 1700 0, and those of the samples with
90% ZrO + 10% CaO after burning at 17000, are given
in figuge 7. Be'sides the dilatometric investigations, also
some physical and technical data of the sampleePshrinking,
porosity, breakir3 strength at prenoure, and others -
Card 2/3 were determined (Table 5)- Conclusions: TiO 2 which is to

The Influence of Admixtures and Additions of Titanium SOY/1"1-58-12-5/10
Dioxide Upon the Stabilization Proce--s of Zirconium Dioxide
be found In com-mercial ZrO2 as an admixture or addition,
does not exert a positive effect upon the sintering of
zirconium mixturen. Furthermore it decreases the stabili-
zation of ZrO and deteriorates the mechanical properties
of the prodiAs. TO 2 exerts a more negative effect in
the stabilization by means of magnesium oxide than
in the stabilization by means of calcium oxide * A TO ited
admixture of more than 0.3 - 0-50 is regarded as un'9u
for the production of dense and solid highly refractory
products from stabilized ZrO 2' There are 7 figures, 5
tables, and 10 references, 6 of which are Soviet.
ASSOCIATION: Institut khinii silikatov AN SSSR (Institute of Silicate
Chemistry AS USSR)
Card 3/3

15 (2)
AUT4OR-3: Kcler, K. , Loonov, A. 1. SOV/1 71 -59-5 -"-/1?
TIT L E'-. Tnfl,.,tion oC Iron Oxide and P-7 Com"tmdn in Yantiw- (C
"ye so---ci-wmiy Pri
r-,zbiJ-1v-niyn oki;ji I V'
PE"i 1 C1 I C1, 0(,Yieu,)ory, 1~150, Jr np 0*7--)-:151
CT: In this article, the authors reT ')ark a-, tho r:!n:i1t3 of
;nvootigation of the inflation of Iron oxides, !nlxtureo of
iron And chromium oxides, as well ns copper- In;! cob;~It
oxidets, at heating,in different (vases. The shrinkln~iv rind
stretching of the samples in heating tFL3 mensurnA hy mearis of
the corundum dilatometer (Fig 1.) which is su").90012ently
eoscribwl. Figure 2 shows the change in'le-irrth of the sample
of irDn oxide at heating in qir, and f i.,-ur-. 3 shors the
,iierophato-raphn of the somplea. PiTire A represents t1le
infl.uence of the oxygen pressure on the linear changes of the
VIP
-3timploa of iron oxide nt 13000, mA fi.0-ur. 5 s ows t. A of a
n~,mple of 6opper oxide in hnatinr- to 900 0. Fi,-ure r) reprenents
the influence of the oxygcn nre3.--ur,~ on the -~tretchin7 of the
G d, 1 samplo of cob-It oxido in ho,-Ain!~ to ~-50 n- in Pir. The , *wrtin-1
pressure of the oxygen was wiried bv Pri r.,11ition of r.rZ~on.

Inflation of Iron Oxide and Its Comnoun-1s, in 1 1 3 /12
Heating
Heating tests of samples with the molecul-ir coraro.,iition
Fe 0 Cr,O 71 - 1 : 2 wire carrind out; t1ley wtrc i-,flated in
-ircon, tim! shrank in air (Fig 7). 'FiCljr,~ 0, t3hovr3 the -.3tretchirC
of various 3fimple.,j fit heating in air, tind Ci,-,tzro ? in carbon
dioxide and hydrogen. The trblo indicatQs Oil! influeacc of
the TiO 2 admixturos on the inflation of thti nixtiiron
Fe20 3 - Cr.0 3' Conclusions: Inflations,.cracks and loss of
strength can be observed at the heating of on-mulus of pure
oxides and certain mixtures sit certain tomper.,,ture3. An
admixture of 10 -f, TO to the mixtures Pe 0 : Cr,C at the
2 2 3 4 7;
ratios of 10 and 1:2 fully eliminates their inflrtion Rt
heating in air up to 18000. rurther investin-ations of the
influence of TiO 2 admixtures on the properties of refractory
chroine-magnesite products are recommenied. There r!rc 9
1 table, and 8 references, of -.,rhich srt~ Soviet.
Card 2/3

Inflation of Iron Oxi4c and Its Compounis in S011/131-59-5e-8/12
Heating
AS'."OCIATIOL.': Tnstltut khimii silikatov A',' SSSR (Institute of Silicate
Uleftistry of the AS USSR)
Card 3/7)

5(n) 307,"Tc-, 4-4-29 /44
AUTHORS: Godina, N. A., Xej.ers E. K.
TITLE: The Inteiaction of Hafnium Dioxide With the Ox.:~&~.,~ of Alkallle-
earth Katair. (Vzaimodoyat-viye draokisi gafriyr; s ckislami
shchellochnozemelInykh m6tailo-v)
PERIODICAL: Zhurnal neorganic~eskoy .himii, 1959, V0,-,. 4) Nr 41 pp 864-891
(USSR)
ABSTRACT: The reacticr. of hafnium dioxide with the oxides of alkaline-
earth meta15 was 1..v6stlga-~-7d 'Ly oYemical a!.d lradiograph--c
.. s. It was ataied char, in- a boi7ing HCI solution
anaiys~ k I
annealed HfO 2 and its solid so-jutions with CaO and MgO are in-
soluble, while the compo,.,,nds CaHfO 31 SrHfO3 and BaHfO 3 are
~, w~-th oxids
readily so'lalle. An iatsnsu interaction --f HfO,
CaO, SrO, ard' Bao o-,zu7~- at 410?'~-' w-;, the forma'11on c~f or-m-
po-unds of the general fcmu ia M IM 3' The uompcand CaRfO 3
and sc1id solutions are li~ ttilt- system HfO,-C.,10 at
Card 1/3 '350--41400:'. A mdytiore r-f HfO and CaCO y4elds 95% CaHfO
1 2 3 3after

S07/7 8 -4 -- 4-2 9/4 1,
Tlt- Ditera~lt-cn -,f Hafrdum Diox,da With the Oxid~,s of Alka--in.~-.-car'-h Meta7s
it ha:~ bezin heated -4~:, '.1000 fo- eight houra. The of th~l
proceza,-3Ls a ftLT-.r.-.icr, of tize at- 000 and is givm In
figure 1. The phase CoMpr 'ed mixv;.v3s of HfOn
_jit4 0 of annea,
g, 4-
and C%O -'~ s ;-cnta+.~nf~d .1r, -%blip 1. The inv.3tiga.ion of the
c.-^ CaHfOi, fcz--.~,tior, and t-,.,j s-,ibaequen.' t.-ans-,1tion into
a solid solution "by the ii-,teract.-ion wi-~!. Hf02 was made by means
of a mixtira cf 60% Hfo, 4 20% CsO a~.- 11.00 and 1,6000. The
.Tpaul~-a ar.4 g~,.-en In f.!g,;:7-; 4. Tho L,,tsra,ct_1-= of HfO,) wiltb. MgO
begil-.s P-t temPeratu.-~e6 > 1400" witlh -zhq format-ior, 1~f aolld
" ut * o
-a 3 -~ It was f~lund by chemical and radiographio analysis
that ro ccmpo-..2rd ia foz-med at 14000 between H102 and MgO.
I)IJ r z
Ing the in-.-eracti~)n of HfO 2 with SrO and BaO the zompounds
5;Rfo 3 and BaHfO 3 are formed w--*thi-,, the temperature rang~i
1100-:3000. After heating at 11000 for one hcu= 95% BaHfO are
fermed. 96% SrHf03 are W-ainod by heating at 1300c' for one
hour. The authors determin,:)d the ~atti,~e parameters of these
comp3-irds as well as the sppcifi,~ veJ~ghts, whi--h are giver in
ilaLla 2. No solid nolutiors are f:rmed In t*a;~, systemr, HfO,--S:O
cari '213 and HfO 2''BaO sinc-i there arc, grPat d1fferP%.;q:: behyll~:n
MM CM'

SOV/78--4-4-29/4-4
Thi! lr-~Pra,~tion of Hafr-~1= Diox..dE WJ--h the Ox~des of Alkaline-rar-.h Metals
radij. The phase ccmpoaitJor of annealed mixtures of
HfO. a,-,,d MgO (i3000--,w6oo") 1e :iated in a table. There are
7 figu--PB~ 3 tab!95, and 1' references, 3 of which are So-.riet.
ASSOCIATION: Institut khimii sl'ikatov kkademi'i nauk SSSR (Institute of
SiIi;,ate Chemistry of tho Academy of Sciences USSR)
SUBMITTED: Jay,,;P.:-y 3, 1956
Carz
a

5(2)
AUTHORS: Keler, E. K., Karpenko, N. B. SOV/7e-A-5-30/46
TITLE: The Conditions for the Formation of Barium Tit.-:-.ate
;(Usloviya obrazovaniya titanatov bariya)
PERIODICAL: Zhurnal neorganichaskoy khimii, 1959P V,'l 4, Nr 5P
:pp 1125 - 1137 (USSR)
ABSTRACTt The oonditions for the forMatioL of U04d bariM titan te by
the interaotion of BaCO 3 with TiO2 in the a9lid phase were
determined. Experiments were oa=ied ort with mixt=es of the
13 omPosition. of 50 -% UY r-ol 2102 ard mo-"a. M6 inl-tial material
was dried at 1200 end herGfoom prassed ,-bjG3ts woze produced
2 0
under a przasure of 700 kg/um and 7yax-aed at 1400 0 For the
. urpcwe of determining the phexe composition .rf tha product.
P
obtained X-ray-0 chemical- and ndorosoopical &2:alysas were
ca ied out. In some oases also bhe ele~trloal qt:~-ities and
the density of the samples were investigat-d. in the system
B&O-TiO2 barium titanate wan tr, exist. Thc r-hase diagram
Car& 1/4 of the system BaO-TiO 2 was const;niotc--i a,.:oord-:D& to data

The Conditions for the Formation of Bari,,um T.1-tamr-te. SOVPs,'-,-f-30146
supplied by RaBe r-nd Loy (Ref 10,~ ead P-r--i tir figure 2.
Th,3 phase diagram of TI,.o eysta~a DC'.13 ;;~Vn Constructed
in aucordanaa with data ~:~btainad ftom and
K. I. Shohepochkiua, and _Is by a I . F~. -r- samples
r,f the OOIP_Poaitio).~~ 501 51, 5,~-3 55, TO 2 were
'3.c,',' 1;.-' 1500"- From
A.
X-ray 1A fol1r.-vi-ti ~L~ vi,*_I
53.5% ,a.;l T'-A'.OIJ P.Iv-) t.%-.:a bosides
the st:ouiti;~7:.il 11nes aft~ir bu:.~-J.r.,7, at 1350' T.~a X-ray
vf sant.-lea wit'a .51, eznd 52.5 I:ol-~a :L,'z,.-,,T r-o *,harium
titanate I--'nes. The samples b-Lrned aL i5OG*.) we:7e also
subjected to an X-ray `:;Ii-i that new
lines were found to Lr~ 3~,% '.;- lzcl.-TiO 2
which aurrasponi to r)_-W.-,. and
I - . - - ained by
miarosooqi,~al investigaticns c-nfir ;.'-e :)bL
X-5?Nf exaui~-_alvion. The h z-. p r 0 f
Card 2/4 barium titu=ate wc,~.,c of a mixture

The Conditions for the Formation of Barium Titanate SOV/78--4-5-30/46
of components in the ratio BaO t TO - I 1 2 a heterogeneous
product is formed after 30 hoursq which consists of B&TiO 39
B&Ti20 5 and B&Ti 30V In a mixture of random composition of
from 50 to 65% by mol TO 22 the products BaTiO3 and BaTi3 07
are formed by burning at a temperature below ',00001 with small
quantities of B&Ti 205* If burning takes place at temperatures
of more than 1200 0 the product.coutains BaTiO 3 and Ba2i 205*
Results show that the velocity of formaticn- of barium titanate
is low. Barium titanate crystallizes in form of long, needle-
shaped crystals of monoolinic structure. The metals show a
high degree of double refraction. The optical character of
barium titanate obtained agrbes with the data obtained by
other authors. The syn-thesis of barium tr-J.- and barium-
tetratitanate were carried out. Mixtures with 70 - 75 mol-16
TO 2 contain barium dititanate and barium tz--ititaLate after
0
Card 3/4 burning at 1150 and 1230 , Mix"Ures wi*,h 75 -- 80 % ))Ymol TO2

The Conditions for the Formation of Barium Titanate SOV/7C-4-5-30/46
contain barium tri- and tetratitanate. By 'burning a mixtures
with'SO mol-% TiO 2 barium tetratitanate is formed. The barium
tri- and tetratitanates are optically zimilar and can therefcro
be distinimlinhed. from each othar only with difficulty by
microscopical analysis* Barium tri- and tet-catitanates are
easily distinggishubls by jae&-x3 of chemical or X-ray analysis.
On the basis of the results obtained a acheme for the phase
composition of a mixture of BaCO 3+T�02 wh-ta btirned at
1100 - 13500 was constructed. The reaults obtainad are shown
by figure 10. There are 10 figures, 5 tables, ana 12 referencesp
4 of which are Soviet,
ASSOCIATIONj Institut khimii silikatov Akademii nauk SSSR
(Institute for the Chemistry of Silicates of the Academy of
Sciences, USSR)
SUBMITTED: February 11, 1958.
Card 4/4

15(2) S/131/60/000/01/007/017
AUTHORSs Keler, E. X Bluvahteyn,-Mo N. BO15/BOO1
~
TITLEs J
On the Problem of Lining Blast-furnace Floors
PERIODICALt Ogneupory, 1960, Nr 1, PP 17 - 23 (USSR)
ABSTRLCT: In the be inning of 1958, the Magnito6orskiy metallurgicheskiy
kombinat ~Xagnitogorsk Metallurgical Kombinat) requested the
Veesoyuznyy institut ogneuporov kAll-Uninn Institute of Re-
fraotories) to give an expert opinion on th-e-most favorable
lining of blast-furnace floors. Thereupon, the authors made
experimentsi K. A. Bezrukova and A. N. Kaller participated
in the experimental part. The results of these experiments
are given. The effect of molten cast iron on the refractory
lining of various refractories was investigated by means of
various kinds of mortar or without mortar, respectively. The
characteristics of the refractories used are shown in table 1,
the lined coal crucibles in figures 1, 2, and 3. The com-
positions of the mortars used are shown in table 2. Table 3
and figure 4 show the results of these experiments. Samples
(Fig 5) were tested to investigate the creep. The resulta
Card 1/2 showed that bricks with an increased alumina content are of
IN,, 5i_ M
77 0-

On the Problem of Lining Blast-furnaoe Floors S/131/60/000/oi/007/017
BO15/B001
no advantage as compared with ordinary bricks. In conclusion,
the authors mentioned that the final solution of this problem
can be brought about only by model tests. The All-Union
Institute of Refractories and the Nizhne-Tagillskiy metallur-
gicheskiy kombinat (Nizhniy Tagil Metallurgical_Kombinat),
and GXpromez have already started such experimental investig-
stions.The economic aspect of this problem has also to be
taken into consideration. Suitable mortars for the walling
of the blast furnaces have to be worked out and produced.
There are 5 figures, 3 tableat and 25 references, 23 of which
are Soviet.
ASSOCIATIONi Institut khimii silikatov AN SBSR (Institute of the Chemist
of Silicates of the Academy of Sciens2!J USSR). Voesoyuznyy
institut ogneuporov (All-Union Institute of Refractories)
C%rd 2/2

82484
S/131/60/000/008/003/003
B021/BO58
AUTHORS: Zuyeva, L. S., Godina, N. A., Keler, E. K.
TITLE: The Properties of q_erigM Djo e nd Its Solid Solutions
With%lCalaium- and Strontium Oxide),l
PERIODICAL: Ogneupory, 1960, No. 8, pp. 368-371
TEXT: The physical and technological properties of the above-mentioned
compounds have not been investigated so far. The results of the authors'
studies in this field are shown in the paper under review. The conditions
of the synthesis of the solid solutions Ce02 with CaO and SrO have been
investigated earlier. Chemically pure cerium carbonate and -nitrate as well IV
as calcium- and strontium carbonate were used as basic materials wap
produced first from the cerium salts by annealing. The product o~taCeionid con-
tained 98% CeG and about 2% oxides of other rare-earth elements. Three
mixtures of vagioue granulation were prepared from this material: a coarse,
medium and firie onef the granular composition of which Is mentioned in
Table 1. The chemical and granular composition of the masses investigated
is shown in Table 2. Samples of the massea investigaW were fired in a
Kryptol furnaoe at temperatures of from 145CPto 1600 C in order to select
Card 1/3

82484
The Properties of Cerium Dioxide and Its Solid 3/13 60/000/008/003/003
Solutions With Calcium- and Strontium Oxide B021X058
the optimum temperature* The shrinkage and apparent porosity may be seen
from Table 3. The influence of the granulation on the sintering process of
cerium dioxide is shown in a fi re;)The elasticity was determined by the
ultrasonic method and the Y$Kru'zi instrument. The investigation of de-
formation under load was conducted according to roCT(GOST) 4070-48. The
investigation results of the fired samples are-listed in Table 4. The tem-
perature of the deformation under load of the samples from CeO and solid
solutions with CaO is shown in Table 5. The chemical resistanci of cerium
dioxide and the solid solution CeO 2 with SrO may be seen from Table 6. The
authors state in conclusion that sintered highly refractory products with
a porosity of tip to 0.1% and a compressive strength of up to 2000 kg/cm2
can be produced, from cerium dioxide and its solid solution with calcium-
and strontium oxide. In order to obtain well sintered products from pure
cerium dioxide, the material must be finely ground. Products from solid
solutions of C4102 with strontium- and calcium oxide also sinter well with
a coarser granulation of CeO,. Products from CeO and its solid solutions
can be fired at a temperatur of 15000C- Samples2from CeO and itsoolid
solution with utrontium oxide show a high chemical resistince in 0 contact0
with other highly refractory oxides at temperatures of from 1600 to 1700 C.
The fields for the application of refractories from cerium are to be de-
termined by further studies. There are 1 figure, 6 tableaq and
Card 2/3

KETAIR, I.K..; ISMVA, Ye.M.
Solid phases in the system BsO - TiO.0 Zbw.neorgokhim. 5 no.Z:
433-436 Y 160. (KLU 13 16)
1. Institut khimii silikatov Akademii nauk SSSR.
(Beryllium oxide) (Titanium oxide)

KELERS E.K.1 KARPENKO., N.B.
Interaction of BaGo with TIO and ZrO during beating Zhur. neorg,
IdLim. 5 no.3:668-67; lir 60. 2 2 iMIRA 14:6)
1,. Institut khimii ailikatov AN SSSR.
(Barium carbonate)
(Titanium)
(Zirconium oxide)

GWSHKOVA, V.B.,-I=R. I.K.
Conditions of the preparation and rates of formation of barium
silicates. Zhure neorg. khim. 5 no.4:882-890 Ap 16o.
(MIRA 13.7)
1. Institut khtmii silikatoy Akadezii nauk SSSR-
(Barium silicate)

ISUPOTA, U.N.; KNIAR, I.K.
Interaction in the sy-stem DeO - S102. Zhur.neorg.khim.
no.5:1126-1131 My 160. (KIRA 13:7)
1. Institut khimii silikatov Akademii nauk SSSR. Iaboratoriya
sinteza, takhnicheakikh silikatov.
(Beryllium oxide) (Silica)

B004/BO14
A'UTHORS: Karpenko, H. B., Kelerx E. K.
TITLE: Interaction of BaCO 3 With V02 and. L75(,-, on. Heating
PERIODICAL: Zhurnal noorganicheskoy khirait, *1)960, Vol. 5., Nc.~ 6,
pp. 1267 - 1282
TEXT: By way of introduction, the authors di8,7,uas pablications c,-,n-
oerning the above subject, and mention ?, Z. Tandura, T. F. Ve.-rbitskaya.,
T. N. Murakova, G. A. Smolenskly A. I. Aygustinlk, and N. S. ArtsAlev1,-%h,
Fig. 1 offers a comparison of the data supplied by P. Z. si-ndura -nd
T. N. Verbitskaya for the parameters of ths, unit of the solid
BaTiO 3-BaZrO3 solutions with the data obtained ~,y tha a;~,.thrrs. The au-
thors had already investigated the intera,~tion of BaCO 3 wit-h TLO2 and
ZrO2 in an equivalent ratio ef the components (Ref, 4), and had workad
out a method for the quantitative determination of the -9-&Tious phases
by X-ray, optical, and chemical analysis. The present paper deals with
SIOTBI601005106II21030
Card 1/4

Interaction of BaCO 3 With TiO 2 and ZrO2 On 5/078 '0/1,105/C6p. 2/030
Heating B004YBOI 4
the interaoticn at various ratios among the components (Fig. 2). The
samples were continuously annealed up to 1,2000C, then ocristantly at
1,200, Iv2509 1,300,, 19400D 19500p and 1,6000C. Thermograms were taken
by means of a device designed by E. K. Keler and A. K. Kuznetsoy
(Ref. 7), which permitted tho simultaneous recording of the thermal dif-
ferential curve, the curve of weight loss, and the S'JT-V6 Of VOIAIMe
change. Fig. 3 shows such thermograms. For e.,omparison,~ Fig. 4 illustrateo.
the thermograme for T1021 Zr021 B&COY and the binary mIxtures
BaCO 3+T102 and BaCO3+Zr02' The endothermio effeot observAd between IV
19000 and %1000C was explained by a redistribution of BaO in the
titanate and zirconate on the establishment of equilibrium in the solid
solutionsp which was confirmed by the thermogram (Fie. 5) of BaZrO 3 +
+ TiO 20 Experimental data are given in Tables 1,2. Figs. 697 show the
composition of the phases for different mixtures of BaT.10 3 4, ZrO. and
BaZrO3 + T102 at temperatures between 1~200 and 1~600 0C. The interaotion
between the oxides of the system BaO - TiO Zro, procseds in a
Card 2/4

Interaction of BaCO With TiO and ZrO on S/078
3 2 2 /60/005/06/1P/030
Heating B0040014
different wayq depending on temperature and composition of the mcixture.
The formation of0the solid solution BaTiO 3"'BaZrO 39 which takes place
only above 19200 C9 is determinant for the subsequent pTo,isse6. The
oomponents which do not enter the solid solution, form barIUM dlti+A-nsts,~
and barium trititanates below 193000C, barium tetratitanate at
1000 - 194000C, and zirconium titanate above 14,4000C. If the mixture
has a high TiO content, a new compound is formed, whil-nh r,,orrasponds to
Ti 0 or Ba Ti 0 given by G. H. Jonker and
one of the compounds Ba 2 5 12 2 9 20'
W; Kirestroo (Refs 5). The prooesses took place at different rates in
the system investigated. Inhibitedq retarded reactions occur for a part
(iormation of the solid solution below 1v200oC2 formation of barium di-
titanate) which do not attain equilibrium with the usual. technical burn.-
ing times. Hence, the phase compositions found do not correspond to
equilibrium states, but to stable, relatively invariant state6. These
phase diagrams can therefore be valuable in the field of electroceramias~
of barium t:Ltanate and other compounds. There are 7 figures~ 2 tables,-
and 8 references: 7 Soviet and I American.
Card 3/4

Interaction of BaC 03 With TiO2and ZrQ2 on S/078/60/005/o6/12/030
Heating B004/BO14
ASSOCIATION: Institut khimli ailikatov Akademii nauk SSSR (Institute vr-
- . of Silicate Chemistry of the Academy of Sciencee,, USSR)
SUBMITTED: January 12, 1960
Card 4/4

C5624~
5/078/60/005/012/010/016
DO17/B064
AUTHORS: Godina, N. A., Keler, E. K., and Rudenko, V. S1
TITLE; Reaction of Hafnium Dioxide WitAitanium Dioxide
PERIODICAL: Zhurnal neorganicheskoy khimii, 1960, Vol. 5, No. 12,
pp. 2795-2797 i
TEXT: The solid-phase reaction in heating mixtures of hafnium dioxide
and titanium dioxide was studied. HfO 2 had a purity of 99%, and TiO 2 a
purity of 99.'7%. The oxide mixtures were preaged to tablets under a pres-
sure of 500 k,3/cm2, and burned at 1350 - 1650 C. The burned samples were
subjected to an X-ray phase analysis. Fig. 1 shows the X-ray pictures of
the mixtures of 506 HfO 2 + 50% TiO2 and the combustion product of this
mixture obtained at 1650 0C. Hafnium titanate HfTiO 4 forms in the reaction
of HfO 2 with TiO 2' Fig. 2 comparis the X-ray pictures of zirconium titanate
and hafnium titanate. The X-ray pictures of hafnium titanate obtained at
20, 1200, and 1400 0 C are given in Fig. 3. The solubility of TiO 2 in HfO 2
Card 1/2

85626
Reaction of Hafnium Dioxide With Titanium
Dioxide
S/078/60/005/012/010/016
B017/BO64
is limited, at 20% TiO2the X-ray picture shows the intensive lines char-
acteristic of hafnium titanate. The dependence of the lattice spacings
of the HfO2lattice on the T102 concentration, and the dependence of the
lattice spacings of the TiO2lattice on the HfO2concentration were stuA
died. The results are graphically shown in Figs- 4 and 5. Apart from
hafnium titanate, solid solutions form in the system HfO 2 -TiO 2' The
limit of the solid solution of TiO in monoolinic HfO lies at 12 to 13
0 2
mole % of TiO 2. At 16o0 C, the solubility of HfO2in ho 2 is ^; 15 - 16
mole %. There are 5 figures, 1 table, and 3 references: 1 Soviet and 2 US.
ASSOCIATION: Institut khimii silikatov Akademii nauk SSSR
(Institute of Silicate Chemistry of the Academy of Sciences
USSR)
SUBMITTED: September 1, 1959
Card 2/2

KFJM, R.K.; BLUVSMYN, M.N.
Lining the hearth bottom of blast furnaces. Ogneupory 25 no.l:
17-23 '60. (MIRA 13:6)
1. Institut khimli silikatov AN SSSR (for Keler). 2. Voesoyuzny7
institut ogneuporov (for 13luvahtein).
(Blast furnaces) (Refractory materials)

KEM, E.K,,; ANDREMA, A.B.
Additional data on solid solutions in the ZrO2-TiO2 System,
Ogneupory 25 no-7.*320-324 16o. (MIRA 13:8)
1. Institut khimii silikatov A.11.BSSR.
(Dielectrics)

ZUYIIVA, L.S..; GODINA, N.A.;-KrTMt-1-1-
Propowties of cerium dioxide and its solid solutions with calcium
and iitrontium oxides. Ogneupory 25 n0-8:368-371 t6o. (min 13:9)
1. lastitut khimii silikatov AN SSSR.
(cerium)

87999
S/131/61/000/001/002/004
1 5'~ .2 2- 10 -11142, 12-73, 06 B021/BO58
AUTHORSt Keler, Eo Ko and Andreyeva, A. B.
MOVAMM
TITLE: Effect of Titanium Dioxide on the Sintering and Stabilization
of ZrO2 in Ziroonia -alumina and Spinel-zirconium
Compositions
PERIODICALt Ogneupory, 1961, No. 1, pp. 25-31
TEM A study has been made of the mineralizing effect of titanium di-
oxide on compositions containing zirconium dioxide as well as magnesium
oxide and calcium oxide respectively, besides alumina. The following Com-
positions were examineds with (Mol ~) A190 3 - 100; Al2o3 + ZrO 2 = 90 + 10;
Zro2 + MgO + Al 203 - 33.3 1 33.3 s 33.3; Zr02 + CaO + A120 3 - 33-3:33-3133.3
with admixtures of up 4~ TO 2- In all specimens, TiO 2 improved sintering
and reduced the temperature of complete sintering from 17600C to 1500OC-
The physico-technical properties of the fired specimens, their coefficient
of 'Linear expansion, phase composition, spinel formation, and chemical
Card 1/3
47 ! T1"MI
43UO ARN-NZ
MORE-!, Flo

87999
Effect of Titanium Dioxide on the Sintering S/131/61/000/001/002/004
and Stabilization of ZrO 2 in Zirconia-alumina B021/13056
and Spinel-zirconium Compositions
composition as well as their refractoriness were determined. It is stated
that an addition of titanium dioxide greatly reduces the sintering
temperature of aluminiferous and zirconium-alumina compositions. In a
similar way, titanium dioxide affects the sintering of the triple equi-
molecularmixture ZrO 2 1 KgO s Al 20 3* The specimens from 90% Al 203
+ 10% Zro2 and ZrO 2 : MgO : Al203 . 1 1 1 t 1 have a better thermal
stability than those from alumina and zirconium dioxide, which is stabiliz-
ed by malpesium oxide and calcium oxide, respectively. The coefficient of
linear thermal expansion of the equimolecular mixtures ZrO 2 - MgO - A190 3
and ZrO 2 -CaO - Al2 03 is much smaller than that of the corresponding
mixtures without alumina. The two-component compositions Al 203 - ZrO 2 and
three-ccmponent compositions MgO - Al 20 3 -ZrO2 possess high refractori.-
noes, se.tisfactory thermal stability, and good stability under pressure at
high temperatures. They may be used as highly refractory masses. There are
4 figuros, 6 tables, and 12 referencest 8 Sovie'.-, 2 US, and 2 German.
Card 2/'5

11 I'D 3.2ris, '52,09, '1009
23968
S11311611000100610011003
B105/B2o6
AUTHORS: Keler, E. K., and Andreyeva, A. B.
TITLE: Effect of the admixture of silicon dioxide on the
sintering and stabilization of zirconium dioxide
PERIODICAL: Ogneupory, no. 6, 1061, 276-281
TEXT: The effect of silicon dioxide on the behavior of zirconium dioxide
during firing is investigated. Pure and commercial zirconium dioxide
were used as initial materials. Shrinkage, weight of unit volume, open
porosity and physicomechanical -roperties were investigated for various
mixtures, admixtures, and firing temperatures. Table 4 shows the effect
of Sio2 admixtures on the formation of the solid solution ZrO.- MgO during
firing. The thermal expansion of samples from 90 mole ~. of ZrO 2
+ 10 mole % of Cao is shown graphically for various firing temperatures
and admixtures. Fig. 6 shows such curves of thermal expansion for samples
from 90 mole % of Zr02 * 10 mole % of MgO, fired at 1,5000C. It was
Card 1/5

Z3968
S/131/61/000/006/001/003
Effect of the admixture Of silicon ... B105/B206
established that pure zirconium dioxide Binters much worse than commercial
ones Its complete stabilization with an admixture of 10;L of MgO is not
even obtained during firing of up to 1,7000C. The admixture of siliccn
dioxide hinders stabilization of zirconium dioxide in solid solution in
mixtures of go mole ~ of ZrO 2 + 10 mole % of MgO and 90 mole % of ZrO2
almost the entire
+ 10 mole 11o of CaO. In the presence of 3-4/o of S1021
magnesium oxide is bound by silicon dioxide, zirconium dioxide is not
stabilized, and the samples become flawy; in the zirconium-calcium mixture
the formation of the solid solution proceeds at lower temperature and part
of the calcium oxide is bound by zirconium dioxide. An admixture of
silicon dioxide is described as being undesirable for the prodliction of
highly refractory products from stabilized zirconium dioxide, and its
content must be restricted by technical requirements. The silicon-dioxide
content in industrial zirconium dioxide should not exceed 1~, nor 0-5% for
the manufacture of especially important products. There are 7 figures,
4 tables, and 9 references; 4 Soviet-bloc and 5 non-Soviet-bloc. The
reference to the English-language publication reads as follows: Geller and
Jaworoky. I. Research. Nat. Bur. Stand, 1945, 35 [11
Card 2/5

23968
S1131 61ZO00100610011003
Effect of the admixture of silicon ... B105/~U6
ASSOCIATION: Institut khimii ailikatov AN SSSR (Institute of silicate
Chemistry, AS USSR)
to
Legend to Fig. 6:
1) with pure Zro ; 2) ditto
2
with addition of 1/~ Si02;
b
3
3) with industrial Zro 2; -t4
4) sample I after 50 hr % 2
glowing at 12000C 1+
card 3/5

23968
S/131/61/000/006/001/003
Effect of the admixture of silicon ... B105/B206
I COCTSO 06PAS406. see. % no"a oapsomm Hci wo, %

ZrO,*
me
apnmecs Slo,
a
I
UMS
c
% CTSTOK M90
nVa4me y
3
9 94.8 3.60 1.60**
1400
95,64
3.10
1,25
99.99
10 93.8 3.56 1.56 1400 96.20 2,30 1.30 99.80
11 93.0 3.54 1,57 2
1 1400 96.33 2.55 1.00 99.88
12 92.0 3,50 1.55 3 14D0 96,47 2,29 1.07 99.83
13 96.4 3.60 1400 96.10 3.50 0.45 100.05
14 94 8 3 60 1 60
- 1600
98.20
1 OR
'
0.60
q9,88
is 93:0 3:54 1:57 2 1600 96.00 2
.26 0.90 99.16
16 92.0 3,50 1.55 3 1600 96,40
17 96.4 3,60 - - 1700 97,4 1,05 1,20 99,65
18 95.4 3.56 - 1 1700 96.00 1.63 1,35 98.98
19 94,5 3,54 - 2 1700 95.00 2.74 1,32 99,06
20 93.6 3,50 - 3 1700 94,40 3.19 1,70 99.2s
Card 4/5

M
23968
S113116110001006100111003
Effect of the admixture of silicon ... B105/B2o6
Legend to Table 4: 1) no. of sample; 2) composition of the sample, d,. by
weight; 3) admixtures; 4) addition; 5) firing temperature; 6) after
treatment with HCl (1:1), %; 7) insoluble residue; 8) others; 9) sum
Card 5/5

26902
S/13 61/000/009/001/001
119 10 B101XB208
AUTHORSt Godina, N. A., and Keler, E. K.
TITLE: Stability of solid solutions in the systems ZrO 2 - MgO;
ZrO 2 - CaO; HfO 2 -MgO and HfO 2 - CaO
PERIODIQALi Ogneupory, no. 9, 1961, 426 - 431
TEXTs The authors investigated the stability of solid solutions of ZrO 2
and HfO2 with MgO and CaO9 The starting materials were HfO 2 (97-2% pure),
ZrO2 (98-45~6 pure), and chemically pure alkaline-earth carbonates. The
chemical phase analysis of the pressed samples consisting of 80% HfO 2
(or ZrO 2) and 20% alkaline-earth oxide which were annealed at 1750 00 for
2 hr aiaclosed the formation of solid solutions in all samples. After
additional annealing at 1200 0C for 24 hr the solid solutions which contained
MgO were decomposed. In order to study the kinetics of this decomposition,
Card 1/3

26902
S/131/61/000/009/001/001
Stability of solid solutions... B101/B208
samples of solid solutions were heated at 12000C for various lengths of
time. X-ray analysis and phase analysis confirmed the instability of the
solid solutions in the systems ZrO 2 - MgO and HfO 2 - MgO, and a higher
stability of the solid solutions with CaO, In the radiograph, the decom-
position becomes manifest b;r the appearance of a monoolinic HfO 2 or ZrO2
phase. On the assumption that the impurities contained in ZrO 2and HfO2
may influence the decomposition of solid solutions, special ZrO 2 and HfO 2
reagents of particularly high degree of purity were prepared (98-5 - 99-8
ZrO 2; 99.5 Hf02 ). After annealing of these reagents with 20 mole% MgO or
20 mole% CaO no difference was found as compared with the initially used
samples (98-45% PrO 29 97.2 Hf02 ). After heating at 12000C, X-ray analysis
and chemical phase analysis disclosed, however, a higher stability of the
aolid solutions which had been prepared from high-purity reagents. While
at 12000C the solid ZrO 2-MgO solutions from commercial ZrO 2 (98.3% pure)
complettly decomposed into their components already after 15 - 20 hr, only
Card 2/3

26902
S11311611000100910011ool
Stability of solid solutions ... B101/B208
3(Y;7o of the solid solution prepared from-99,0 ZrO2were decomposed after
200 hr. There was no substantial difference between the solid solutions
of ZrO2 and HfO2 with MgO and CaO. There are 6 figures, 4 tables, and 6
references, 5 Soviet and 3 non-Soviet. The two references to English-
language publications read as follows: C. E. Curtis et als, Journ* Amer#
Cer. Soc., 1954, no, 10, 45P; P. Duwez et al., Journ. Amer. Cer. Soc., 1952,
no. 5, 107.
ASSOCIATIONt Institut khimii silikatov AN SSSR (Institute of Silicate
Chemistry AS USSR)
Card 3/3

2.~~ 267
S/062/61/000/010/001/018
&b B117/B10I
AUTHORS: Keler, E. K., Godina, N. A., and Savchenko, Ye. F.
TITLEs Reactions of silica with oxides of rare earths (La2 03'
Nd203P Gd 203) in solid phases
PERIODICALs kkademiya nau k SSSR. Izvestiya. Otdeleniye khimicheakikh
nauk, no. 10, 1961, 1728 - 1735
TbXT: The authors studied the conditions for the formation of rare-earth
silicates in solid-phase reactions. The systems La 2 03-Sio 2' Nd 203-Sio 2#
and Gd20 3_SiO2 were studied by X-ray analysis, chemical phase analysis,
and microscopically. The initial reagents were analytically pure amor-
phous silica, 991/~, lanthanum and neodymium oxides, and 98.2~~ gadolinium
oxide. Oxide mixtures were pressed to tablets and annealed in Silit or
Kryptol furnaces. Mixtures of lanthanum oxide and silica were prepared
in ratios of 3tIj 20, 1:1, 20, It2, and 10 and kept at 1100 - 16500C
for different times. X-ray analysis of a series of reaction proaucts dis-
closed that two phases, La 203' Sio, and 2La2O 3' 3SiO2' mainly the ortho-
Card 1/4

S/062/61/000/010/001/018
Reaction.; of silica with... B117/B101
silicate phase, are forued in the temperature range of 1200 - 14000C,
irrespective of the oxide ratio in the initial mixture. Up to 13000C the
roentgenograms of the reaction products remain unchanged. When the tem-
perature is raised, only the content of initial components in the samples
decreases, Pyrosilicates are formed only at 1500 - 16500C owing to the
interaction of the resulting orthosilicates with silica. In 1La20 3
+_3SiO2 which contains more silica, pyrosilicate formation may be ob-
served already at 14000C. Orthosilicate remains the intermediate phase,
In mixtures having a higher content of lanthanum oxide (3:1, 3:2, 2:1)j
X-ray analysis disclosed the formation of La20 3* Si02 and 2La2O 3* 36io 3' In
samples of the composition 2La2O3 + 35i02' three phases were found;
2La2O 3* 3Si02, La20 3' Si02, and La203* 2SiO 2' The orthosilicate is unstable
and decomposes into pyrosilicate and oxyorthosilicate. Pure orthosilicate
could not be obtained from the solid-phase reaction. Prolonged annealing
and temperature increase to 1500 - 16500C always resulted in orthosilicate
decomposition. Lanthanum silicates obtainQd at 12UO - 13500C are finely
crystalline. iflicroscopic examination of these samples yields no aefinite
Card 2/1,

2,-, 2 b -1 S /062/61/000/010/001/018
Reactions of silica with... B117/B101
results. These products were studied by the chemical method 'Mith respect
to their solubility in ammonium acetate; their re]sistance to the action
of boiling ammonium acetate was compared with that of silicates obtained
at 16oo - 16500C- It was found that the compositions annealed at 1600
- 16500C, which correspond to the pyrosilicate and orthosilicate, are
sparingly Ejolnble in ammonium acetate, while the oxyorthosilicate is
markedly soluble. The solubility kinetics of silicates obtained at 13500C
is equal for all three compositions. On the basis of the experiments per-
formed, a phase diagram of annealed mixtures could be plotted (Fig. 4).
The reactions of neodymium, oxide and gadolinium oxide with silica, Sudied
by the same methods, showed similar conditions of silicate formation as in
the case of La 203-Sio 2' The formation of the compounds La 203' Sio3 and
Nd203' Sio2, respectively, was confirmed by the crystallo-optical propertief
of the (.-,ompositions Us,203+ Isio2and 1Nd 203 + 1SiO2 annealed at 1500
- 16500C. The papers by N. A. Toropov, I. A. Bondart (Izv. All SSSR, Otd.
khim. n. 1959, 554); N. A. Toropov, F. Ya. Galakhov (ibid, 1961, 000);
N. A. Toropov, T. P. Kiseleva. (Tr. Leningradskogo tekhnol. in-ta im.
Lensoveta, no- 52 (1961))are mentioned. There are 6 figures, 3 tablest
bard 3/4
4it, U

Reactions of silica with ...
S/062/61/000/010/001/018
B117/Ml
and 6 references: 4 Soviet and 2 non-Soviet. The reference to the
English-language publication reads as follows: J. Warshaw, R. Roy, Bull.
Amer. Cer. Soc- 38, N 4, 169 (1959)-
ASSOCIATIONt Institut khimii silikatov Akademii nauk SSSR (Institute of
GilicAte Chemistry of the Academy of Sciences USSR)
SUBMITTEDs May 4, ig6i
Fig. 4. Phase composition of
annealed mixtures of La 0 and
2 3
Sio2(L La 203; S S'02)'
Fig. 4
1700- LS L S, L51
0 " I .
R
Ism - La,03tLS 4 LLS-3 U, 0
H 1
5 Itz Ls. Lseswt
$V111A
10 0 -01
37:4
I 10LiSeLse
14M - I
0 1 -.-. - - t2~Lrok~L_q
10 a a 0
a 1000 0 a 0
111"Ll*I
2. In-
-n-Nin.o 0 0
Card 4/4

2~268 5/062/61/000/010/002/018
B110101
AUTHORSi Keler, E. K., Godina, N. A., and Savehanko, Ye. P.
TITLEs Reactions of silica and praseodymium oxide in solid phases
PERIODICALt Akademiya nauk SSSR. Izvestiya. Otdeleniye khimicheskikh
nauk, no. 10, 1961, 1735 - 1741
TEXTs The authors studied the conditions of silicate formation through
interaction of Pr203 and Pr 6011 with silica. The reaction products were
investigated by X-ray analysis and chemical phase analysis~ The initial
reagents were 95~ praseodymium oxide Pr 601 1 and analytical-grade amorphous
silica, Experiments in hydrogen medium were performed in a Silit tubular
furnace. When hydrogen was passed through at 12000C, Pr 60 11 was reduced
up to Pr203 within two hours. Mixtures with Pr 20 3/SiO2ratios of 10,
131.5, and 1j2 were used in the experiments. The orthosilicate 2Pr 0 *3sin-
2 3 2
was found to be formed at 12000C, as shown by X-ray analysis for all three
compositions. At 13000C, the orthoBilicate was found again, but also
Card 1/4

2"1268 S/062/61/000/010/002/018
Reactions of silica and... B117/B101
oxyorthosilicate was formed from Ur 2 03.66 + 1SiO 2" Further experiments
at higher temperatures were made in air medium. Pr 6011 was found to dis-
sociato gradually. A comprehensive thermal analysis of this praseodymium,
oxide was carried out using a device designed by E. K, Keler and A, K. Kuz-
netsov (Ref. 7j Pribor dlya kompleksnogo termicheskogo analiza (Device for
comprehensive thermal analysis), no. 2, VINI, 1960)., Oxygen absorption
during cooling in the temperature range of 1100 - 10000C was found to be
accompanied by a marked growth of the sample. In order to obtain
praseodymium, silicates, mixtures of Pr 601 , and silica were pressed to
tablets and annealed together with a praseodymium-oxide tablet in a Silit,
Kryptol, or reverberatory furnace at 1200 - 16500C, and the content of
active oxygen was determined. On annealing in air medium, the oxygen con-
tent remained unchanged at 14000C. At 1500 - 16500C, it dropped from
3-1*15~_j to 3.0 - 2.9%. In the air medium, praseodymium oxide was found to
react with silica already at 12000C while forming silicates, Like in ex-
periments in hydrogen medium, the orthOBilicate 2Pr 20 3* 3sio-) is formed by
reaction of 2Pr 20 3.66 + 3S'02 and Pr 205.66 + 2S '02~ In 1Pr 203A6 + 1502
Card 2/4

3/062/61/000/010/002/018
Reactions of silica and... B110101
the oxyorthosilicate Pr 20 3' Sio 2is formed in addition to the orthosilicate
In samples with a higher content of praseodymium oxide (2Pr 203.66 + isio 2)
oxyorthosilicate is the only reaction product. At higher temperatures
(in the range of 1400 - 16500C), the orthosilicate is unstable and de-
composes into Pr 203' Sio2and Pr20 3* 2SiO 2* The pyrosilicate formed at
these temperatures is the result of an interaction of subsilicates formed
in the primary reaction stage with silica. At temperatures of 1600 -
16500C, oxyorthosilicate is obtained in nearly pure condition, containing
only small orthosilicate impurities. A. phase diagram (Fig. 5) of an-
nealed samples of the P 'r20 3-Sio2system could be plotted on the basis of
the studies performed. There are 5 figures, 4 tables, and 7 references:
3 Soviet and 4 non-Soviet. The three most recent references to English-
language publications read as follows: R. E. Ferguson, E. Daniel Guth,
L. Eyving, J. Amer. Chem. Boo. 76P 3890 (1954)1 E. Daniel Guth,
H. R. Holden, N. C. Baenziger, Le Roy Eyring. J. Amer. Chem. Soo 16,
5239 (1954); 1. Warshaw, R. Roy, Bull. Amer. Car. Soo. 38, N 4, ;69
(1959).

~-620; 5/062/61/000/010/002/010
Reactions of silica and... B110101
ASSOCIATION2 InatitUt khimii silikatov Akademii nauk SSSR (Institute of
Silicate Chemistry of the Academy of Sciences USSR)
SUBMITTED3 May 4, 1961
Fig. 5- Phase composition of annealed mixtures of praBeodymium oxide
and silica; x,(, 1.83; P - Pr 2 03.66 S - SO 2'
~C Fig. 5
1600 - FS+:
0
JSLV - P54% r 0 PYust
P,w 0 0 0
0 Pr&*10 0 00
FrO,+P5 +P5 I PrOj*PL53+5Wt
a ~~Oc. 1 0 0
466

2953.4
S/062/61/'000/011/001/012
ji~..Qno B119/B138
AUTHORS: Leonov, A. I., Rudenko, V. S., and Keler,_E.__K.
TITLE: Reaction between Go 203 "d SiO 2 at high temperatures
PERIODICAL: Akademiya nauk SSSR. Izvestiya. Otdeleniye khimicheekikh
nauk, no. 11, 1961, 1925-1933
TEM Silicates of trivalent Ce were synthesized in a hydrogen atmosphere,
as Ce 203 is unstable in an oxygen-containing atmosphere. Qq.1A Coo2 and
analytically-pure SiO 2 were made to react between 1200 and 1650 C in the
molecular ratios Ce 2 03Isio 2 a20, 10, 2:3, 10, 1:4, and 1:8. The
calcinbd products were analyzed by the X-ray diffra6tion method. The Ce 203
X-ray diffraction pattern was interpreted on the basis of data by
B. F. Ormont (Ref. 5: Struktura neorganicheskikh veshchestv. (Structure of
Inor 'i~mnic Substances) 1Z.-L., 1950, str. 455). The refractive index,dielec-
tric conotant,dielectric lose (these two measured by I. S. Yanchevskaya),
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2951h
S/062/61/000/011/001/012
Reaction between Ce 2 03 and SiO 2 at ... B119/B13F,
and specific weight were also determined. To identify the produots yieldedt
they were oxidized by heating in air and their oxygen absorption was
gravimetrically determined. (The individual Ce III silicates have different
decomposition temperatures on heating in air.) Resultst The compounds
Ce203' SO2 , 2 Ce 203* 3 Sio 21 and Ce203* 2 SiO2could be proved. Crystalline
Ce203* 2 SiO2 was obtained from an initial mixture of 1 Ce 203+2 SiO 2 .
0e203' Sio2 and 2 Ce2 03' 3 S102 are unstable and could not be obtained from
their stoichiometric initial mixtures in a purely-crystalline phase. The
decomposition temperatures in air are between 300 and 5000C for Ce'O *Sio
2 3 21
between 600 and 700 C for 2 Ce 203* 3 S102 , and at 900 C for Ce20 3* 2~SiO 2'
Among others, papers by N. A. Toropov and 1. A. Bondarl (Ref. ls Izv.
AN SSSR, Otd. khim. n. 1959, 554) and I. A. Bondarl (Ref. lt Sb. "khimiya
i prakticheskoye primeneniye silikatov", L., 1960, str. 5-9) are mentioned.
There are 6 figures, 8 tables, and 5 referenceso 2 Soviet and 3 non-Soviet.
The two references to English-language publicutions read as followat
Card 2/3
r~pw

Rea3tion between Ce 203 and SiO2 at
2951h
S/062/61/000/oil/001/012
B119/B138
I, warshaw, R, Roy, Amer. Ceram, Soc. Bull. J6, N 4, 169 (1959);
Alp'-abet-ical and Numerical Indexes of X-RaY Diffraction Patterns, ASTM,
1953,
ASSOCIATIONs Institut khimii silikatov Akademii nauk SSSR (Institute
of Silicate Chemistry of the Academy of Sciences USSR)
SUBMITTEDj May 22, 1961
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70
29990
S/13 61/000/012/002/002
B105XB101
AUTHORSt Keler, E. K., Andreyevap As Bo
TITLE: Decomposition of calcium zirconate in the presence of some
oxides during heating
PERIODICAL: Ogneupory, no. 12, 1961, 581 - 586
TEXT: The authors investigate the thermal resistivity of calcium
zirconate an a refractory material in the presence of the oxides of
elements of the fourth group and of alumina. Por the synthesis of
caicium zirconate at 1350, 1500, and 1600 0 C, they used industrial
zircor-li. dioxide with a content of 98.4% ZrO 2 and calcium carbonate, as
well as ZrO2, T'021 S'02 , Th02 , and A1203' Specimens from calcium
zirconate react at 1350 0C in contact with silica and titanium dioxide. Up
to 1450 OC this reaction did not take place with zirconium dioxide,
thorium dioxide, and alumina. Calcium zirconate in an equimolecular
mixture with Zr02, S'02 , T'02 , and A1.03 decomposes during heating up to
1500'C' (1) with SiO 2 into calcium silicate and monoclinic zirconium
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29990'
S/131/61/000/012/002/002
Decomposition of calcium ... B105/B101
dioxide;(2) with ZrO 2 into the solid solution ZrO. - CaO and some undecom-
posed zirconate is leftj (3) with Al 203into the solid solution Zr02 - CaO
and calcium aluminatel (4) with TO 2 into the triple compound
Zro 2. CaO-2TiO2and a residue of CaZrO 3* With ThO 2' calcium zirconate does
not decompose during heating to 16000 C. There are 6 figures, 4 tables,
and 8 references: 5 Soviet and 3 non-Soviet. The two references to
English-language publications read as follows: M. K. Hadler.
E. C. Fitzsimmohe. Journ. Amer. Cer. Soc., 1955, No. 6. p. 214;
L. W. Coughe.nour, R. S. Roth, S. Marzullo, P. E. Sennett. J. of Research
N~B.S.~ 1955, v. 54, No. 4.
ASSOCIATION. Institut khimii silikatov All SSSR (Institute of Silicate
Chemistry AS USSR)
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KELER, E.K.; ANMEYL'VA, A.B.
Effect, of an admixture of silica on the sintering and stabil-
i2ation of zirconium dioxid6- OgnOuPory 26 no 6:276-281 161.
iMIRA14:7)
1. Institut khimii silikatov All SSSR-
Zirconium oxide)
lica)
M

GODINA, N.A.;. KELBRp E.K.,
Stability of solid solutions in the following systems: ZrO2-
14gO2 ZrO -CaO Hf02-M9O, and HfO2-CaO, Ogneupory 26 no.9.
-426-mp1 14j. p (MIRA 14:9)
43
1. Institut khWJ qilikatov AN SSSR.
(Refractory materials) (Zirconium oxide)
(Hafnium. cxide)

2100 JIL(;'
gki
AU Si Sergeyeva
1273,
- I.... _J&
S/080/61/034/001/017/020
A050129
V.I., Glushkova, V.B., Keler, E.K.
TITLEt Physical and Technical Properties of Barium and Strontium Silicates
PERIODICALt Zhurnal Prikladnoy Khimii, 1961, Vol. 34, No- 1t pp. 212-214
TEXTs Synthesis and sintering of single barium and strontium silicates with
mineralization admixtures were investigat6d, and the physical and technical
properties of the sintered samples were determined. Concretes oontaining
those silicates have a greater resistance to sea water, they are heat-resist-
ant and have X- and Gamma-ray shielding properties. Besides, these silicates
are used for special ceramics and phosphors. Nevertheless they are insuf-
ficiently studied. Hadley et al. [Ref.21 J.Applied Physics,27,11,1384 (1956)]
briefly reported on some physical properties of barium orthosilicate. The
present authors determined in revions investigations [Ref.3: ZhM,1,10,2283
(1956), Ref-41 ZhPKh,30,4,517 T1957)] formation conditions of barium- and
strontium-ailioates. In the present work the silicates were synthesized from
dry silicia acid and barium- as well as strontium-carbonate in silite ovens
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22532
S/080/61/034/001/01'1/020
A057/A129
Physical and Technical Properties of Barium and Strontium Silicates
at 1,2000- 1,400 OC. The sintered material was milled by batches after each 4
hrs of sintering, briquetted (at 200 atm pressure) and sintered again to ac-
celerate synthesis of the components. Duration of the total sintering pro-
cess was 32-56 hrs. The synthesized silicates were sieved and articles were
pressed at 500 atm adding 7-10% of kerosene by weight to decrease lamination
of the material. The articles were fired at different temperatures, and the
physical and mechanical properties were determined. In order to obtain samp-
les of small porosityg mineralizers (Na2COA, BaC12, ZnO, SrC12, MgF2, B20
w 8i
and A1203) in amounts of 1-1-5% of weight 'ere mixed with the synthe zed a
lioates. The strongest influence have A1203 and_B208ogdmixtures (the latter
on Ba2S'01). They form a liquid phase at 1,3500 1,4 C by melting of the
eutectic n this ternary system. According to these results A1203 and 3203
admixtures were used to prepare sintered samples. Physical and technical
properties of the investigated samples dem Ionstrate (see Table) that additions
of A1203 and B20 in the amount of 1-1.5% by weight decrease porosityg in-
crease mechanical strength (except Ba, Sio + 1% B203) and the modulus of elasUo- -
ItY and bending. A1203 admixtures practically do not change the heat-re-
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A057/Al 29
Physical and Technical Properties of Barium and Strontium Silicates
sistance of the material. The dielectric constant increases with BaO- and
SrO-content in the silicate. Barium silicates have a lower temperature co-
efficient of dielectric constant.- The present investigation dqmorstrates,
that improvement and in6rease in mechanical properties of barium- and stron-
tium-silicates were effected by sintering with admixtures of mineralizers.
There are I table and 4 referencest 2 Soviet-bloc, 2 non-Soviet-bloc.
ASSOCIATIONs Instit t khimii silikatov AN.SSSR (Institute for Silicate.
Chemistry of the AS USSR)
SUBMITTED: May 10, 1960
Card 3/6
~. Mt
'q

S/08 61/034/001/017/020
A057YA129
Physical and Technical Properties'of Barium.and Stidn'tium Silicates
Table:
Phypical and technical characteristics of the,samples
oontent of mineralizer (in ~ of weight)t 0 sin)ering tem.
(D silioatO6 Q 5
perature in C, 4 water absorption according to kerosene in ~, ( ap a , nt
porosity in , 0 true pokosity in ~ t. T weiAt by,volume in glom , (8 sole t -
0
in ~, V9 physical d technical values ooerficie t exp n8ran,
in, Poisson's ratio, 12 coefficieq f h.aUrG-10-2 in kes/ora 13 modul-
4r, 2 sion strength d in
us of elasticity E.10- n kg/cM 9 14 comp kg cfi,2,
aD u
15 number of heat changes unt rup ure, dielectric constant' &,
4 t 9
dielectr 0 losses tg 6., 1 elmRerature coefficient-of dielectric con-
")t no admixture.'
stant tvF_, .10 (D9 melting poin (00

o
A

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A057/A12q ~, --- I --II ---
Physical and Technical vi
0
1 VI

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