SCIENTIFIC ABSTRACT G.I. CHUFAROV - A.A. CHUGASOV

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• Collection: Scientific Abstracts
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• Release Decision: RIF
• Original Classification: S
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• Document Creation Date: November 2, 2016
• Document Release Date: June 12, 2000
• Sequence Number: 4
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

8/02 61/138 001/016/023
B103YB208
AUTHORS: BalakireArt. V. F# and, Chufarov G. I., Corresponding Member
AS USSR - -------
TITLEt Equilibrium aonditione in' systems Co-O and Co-O-H
~-PERIODICAL: 'Doklady,-A.kademii nauk SUR, v. 138t no. 1, 1961v 112-114
TEXT: The authors determined the orystal lattice parameters of the two
cobalt oxides accuratelly-defined: CoO and Co 0 CoO~has the lattice
3 4'
.type of NaC.10 ~.Co 0 f1he spinel types The authors studied samples of
3 4
Co2 03- (fro m,-' the ikavod "Krasnyy, Khiiik.ll plant "Krasnyy.Khimik") and also
detected a spinel:type of the-.1attice.vith parameters similar to those of
Cc 0 It wAs,.howeverlAifficult to determine.the quantity of the para-
3 4
me.terl, sincethe'lines in.the roentgenogram are indistinct. The authors
point out that anhydrous Co 0 cannot be prepared, but that CoO and Co 0
-2 3 4
may- form solid solutions with oxygen. Since the published data on the
Card VT

23812
S/020/61/138/001/016/023
Equilibrium conditions in, systems-... B103/B208
dissociation pressures of oobalt oxidesin,the system Co-O-H and on the
equilibrium in this system arecontradictory, these problems have been
-studied. They are important for the' production of cobalt and its compounds
I(for the technology of direct production of high-quality cobalt metal from
its oxides by reduction with hydrogen). The authors obtained Cc 0 by
3 4
annealing analytical-grade ttoobalt oxide" for 70 hr at 8000C in the air.
Table 1 contains data.-on the 'equilibrium pressure of oxygen in. the system
3Cob + 1/2 0 t
C0304;=:� 2
T 'OK 973 1073 1123 1173
-2
P MM 5.32.10 ~0.12 7.3 25.0 153.5
02
The equilibria in this system and in the system CoO +H PCo +R 0were
21ft 2
studied both in the direction.of.the Co 0 dissociation and of the CoO
~3.4
oxidation; the' oxygen press-Aire was determined in a vacuum device., The mean
values-Pf the.0 pressure for the dissociation of Cc 0 are expressed by
2 3 4
Card 2/7

23812
S/02 61/138/001/016/023
Equilib,rium.bonditions in systems.*,*,* B103YB208
characterof the, reaction 0960,4- ;--~-.19412.oalo It was found that in,
provicus-studies of: the a ri m'CoO H V& cc + H
Vilib u 72 0 methods with
2
cphoidtrablq 'errors. had been applied'.~ imong others, neither thermal diffu-
sion,has been .considered, noi?:,the :equilibrium gas mixture analyzed. 'The
authors studied analytical-gradel.CoO.. The sample was found to be monophase
(like that.'.of':Co 0 )~ and'_it-q',A_a ttice parameter was in agreement with
3 4 7
publishe'd.data, -.To eliminate .:~th-ermal diffusion, a continuous circulation
of the.gas4ixture~:was maintained by means of a diffusion pump. Equi-
librium was"attained at a constant water*vapor pressure (4.579 mm) which
was maintained by dipping.-the receiver with water into a Dewar flask
containija~g-thawing ice, After-equilibrium had been attained, the,sample
was removed.from.theofurndde and-hardened. From the vapor-gas.mixture the
wate:P vapor Aas,.frozen' ou t ina receiver immersed.in liquid nitrogen.
The equil-f1brium. _- gas ma's again analyzed ~f or impurities. This was * made by
interaction--of H with CoO.th:Ech,vae.again introduced into the furnace.
2
The.resultant w ater vapor- -was 1ro zen ou t.- The pressure d if f erence gave the
-Card

$/020/61/138/001/016/023
B103/B208
EqUilibijum. O'ond it iozi o eye t ems
was converted by a correction dia
gram to
e qu il ib2luk pr*ssu .re o
the 0'
rsOults, are presented in Table 2. ~ They ma
-.The
yl
+ 0.52. Also in this case,.
the.. ;el.atibn j I I
be.~expressed by
the
quilibrium.oQnstant~'dooredoes,with-rising,temperaturep as the reaction
e-change of the isobaric-isothermal
631
298, is wtotherm -Th
-..Potent.ial.io.determined by 40,
T. ---4457 2.381 T cal. The dissociation
calculated 'from, -P
I .(No Kit )2 atmo, it foll
prassure of:coo.ii3
.0 Ows:
2
log P0 + 7.14*9 ahd the isobaric-isothermdi potential
2
0
T --55754'--16.333 T cal. ThereF are 2 tables and 13 references:
Z
A
-7.non--Soviet-bloo.- Thel most recent references to
..6, Soviet-blop and
English-language publicationg rea V~
d as'follows: H. W. Foot, E. K. Smith
(Re f. 4 Am. Chem. Soo.,. 36 "'1344P 1908 9 Y. H. Emmet, J.- E. Schultz
(Ref. 8': J. Am. Olfe.m. Soo.:, 311 3249, 1929~, M. Watanabe (Ref. 10: Sci.
Card 5/T

S102OV611138100110161023
Equflibrium oonditions 'in systemse.-V* B103/B208
Rep. Tohoku 1ppo Univ-i -22, now4 892 1933)..

iSSOGIATION: Ineiitut metallurgii Ural' skogo filiala Akademii nauk SSSR
(tmWWte ~of Metallurgy of the Urdl Branoh of the Aaademy of
Sciences, USSIO!
SUBMITTED- January 251 1961,
equil
Legend to 'Table 2 1) T, OK, 2)
P
mm H9, 4) oonditions;
5) K"
.
H2
-
mean-valuej,
fromth duction; 7) from the side of
6) e side of re
oxidation.

Card 61,

S/020/61/139/005/012/021
B103/B217
AUTHORS: Bogoslovskiy*, V. N.'~Stafeyeva, No M.) and Chufarov, Go I.,
Corresponding Member AS USSR.
TITLE: Reduction of copper ferrite CuFeO by graphite
2
PERIODICAL: Akademiya nauk 888R, Dokjadyj v. 139, no. 5, 1961, 1105-1106
TEXT: The authors studied,,by means of,graphite, the reduction kinetics of
11 3+ 2-
ferrite of monovalent co'pp er, Cu 'r.Fe , 02_ of rhombohedral structure, and
the crystallochemical. transformations occurring. The ferrite was produced
by sintering a mixture,of.stoic.hiometric composition Cu 0 +.Fe 0 during
2 2 3
28 hr at IOOOOC in a'C02 current. The specimens, obtained were monophase
(stated by x-ray diffraction). Reduction-by graphite was conducted in vacuum
of approximately 10-2 mm Hg., Methodshave been described in detail (Fiz
met. i metalloved., a, 740 (1959)). Experimental results at 900, 950, 1000,
and 10500C are given in Fig. 1. It is concluded that copper ferrite is
reduced gradually. The.process stops with 25% reduction at 9000C. Reductim
Card 1/5

S/020/61/139/005/012/021
Reduction of copper ferrite CuFe02 B103/B217
As more intensive' at higher temperatures.11 First,, the reaction is retarded
(up to.50% reduction~-then? however, accelerated. CO and CO are the.
2
gaseous reaction products. Only C02:forms.up to.33% reduction, from 50%
reduction thetratio CO CO 1 1. The CO quantity gradually decreases
~2 .2
with further reduotion: The stepwise character of this reduction is
confirmed bylx-ray.difiraction pattern in the solid phases at differ-'ent
reduction degrees. Copper and magnetite (the latter gives a spinel diffrac-
tion pattern) are detected besides initial ferrite in an early stage of
reduction. Initial ferrite vanishes in 30% reduction whereas vu-stit .e appears
at 40%. Autocatalytic wustite~reduction begins after removal of 50% oxygen;
copper, wustite, and iron are detected in the solid reaction products*
.CuPe02 does not form solid-solutions with magnetite. This was confirmed by
the dependence of the oxygen equilibrium tension in the gaseous phase on the
reduction degree. The exact results of this study are to be published:later.
It is the authors'-'opinion that no remarkable volume diffusion of metal
cations or oxygen ions by the layers of' solid reaction products occurs, since
there is no mutual solubility between initial oxide and its reduction
products. Surface diffusion plays an important part in this process., It
Card 2/5

8/020/61/139/005/012/021
uotion of
Red copper ferrite cureo B103/B217
2
leads to a growth of copper and magnetite crystals on the surface of-
ferrite particles during redu ction. In the fine powder used by the authors,
ferrite was transformed to magnetite and copper sooner than magnetite reduc-
tion began. There are 1,figure and 6 references: 3 Soviet-bloo and 3 non-
Soviet-bloc. The three-refor,enoes to.English-language publications read as
follows: A. Pabst, Am. Min-o '31i 539 (1946); C. Delorme,2F.~Bertaut, J.
Phys. Rad.t 14, 129 (1953)1 W. Boller, A. J.Thompson, Phys. Rev., Al, 644
('1935);
ASSOOLnTON: Institut metallurgii Urallskogo filiala Akademii nauk SUR
(Institute-of Metallurgy of the Ural Branch of the Academy of
Sciences-USSR)i
~SUBMITTED: April,21, 1961
Card 3/5

S/020/61/140/066/029/.030
B103/B1.01
AUTHORS: Chufarqy.,~., Corresponding Member AS USSR, and
_7
Sga-Faillina, 0. K.~,
TITLE- Mechanism andkinetics-of wustite decomposition
PERIODICAL: Akademiya,nauk SSSR* ~Dokladyj v. 140p no. 6, 1961, 1392-1393'.1
TEXT: The decomposition of wustite an its,free surface~knd the quantitative
.characteristics of the-decomposition kinetics were studied. Wustite
produced by oxidation of Armoo iron in co-CO 2 atmosphere was chipped off
and tempered in vaouo,at 350OC- Phase composition and parameter wort
determined by x-ray structural analysis. Tolystyrene carbon replicas of
the free surface of the specimens were.examined electron mioroscopinallyS.
The magnetic saturation moment was measured by means of magnItic analysis
in a ballistic apparatus. Wastite had a,parameter of 4.295 X in its-,
original state. This corresponds to the.formula Fe 0. It has'been
0.907
found that decomposition.begine on the outer surface of the scale and is
here more intensive# since this surface is richer in 0 Primary magnotitt
2*
Card 1/4

S/020/61/140/006/029/030.
Neohanism and kinetice.ofsea, B103/B101
forms on both surfaces' &i thin anUflat formatione according to the
n 0 - 4Y)Fle --4(l - 4x) Fe 0 +'(x:- Y) Fe 0 The
reactio 6
I-X - ~ - 1-Y 3 4; x> y
re sulting metastable wustite. contains much,less oxygen in the surface"
layers (re 0) than in-the center (Fe This is indicative of
0-984 0.9630
strong decomposition on the free surfacei where orystallochemioal
conversion is much easier. Eutectoid decomposition is determined based on
the occurrence of iron and the constancy of the parameter of metastable
muntite. It proceeds adcording.to the reaction: 4Fe 0 -,P Fe 0
3 4
y
(1-4y)Fe (2). This.'decomposition is accompanied by a characteristic
hange ofthe surface mi"rostruct (Of'
0 c- ure. Numerous fine pores about 0.1 L)
are formed. The mechanism of this process is, On leaving the wustite
lattice iron ions leave vacancies. These coagulate to micropores ihich
are not overgrown.by the magnetite originating from wustite. Additional
annealing of the speoimen,s_.(at 5000C) after decomposition reduced the
porosity and revealed clearly the microstructure. Both the large primary
magnetite crystals and the eutectoid could be easily distinguished.
Microcrystals (of about 0.5 A) of the secondary magnetite became visible
Card 2/4

S/02 61/140/006/029/030
'Mechanism and.kinetics of...
13103YE.101
in the eutectoid.- Presumably, the,iron content of the eutectoid is
insignifioant (about 13 %:-bi Volunie) - Probably, Fe forms'intermediate
layers between the magnetite -microcryptalso The ourve 0 (t) was plotted
(Fig. 4) 'as a result.-of:maigiietioanalyeis and sh6wa tha? the 'specific
intensity of saturation magnetization of vuetite specimens is a function
of the annealing Aime: at 3500G. , The experimental values of ars could be
used to determine the--de'oomposition degree in any intermediate stage and
to-estimate' the decomposition rat(iAn different periods. This became
possible owing to theconstancy of the quantitative interrelations
13-etween. the phases formed. The:rate during- the first period (pre-eutectoid
separation. of magnetite) exceeds that of the second Deriod (eutectoid
decomposition) by a.factor of about seven. There are 4 figures and
6*references: 3-Soviet,and non-Sovi'e't.
~3
ASSOCIATION: Institut, metillurgii TJjrallskogo filiala Akademii nauk SSSR
the Ural Branch of'the Academy
(I'nsti-tuteof Metallurgy, of
iences'USSR Urallskiy politekhnicheskiy institut im.
of so
S. M. Kirova~(Ural Polytechnic Institute imeni S. M. Kiro-.V)
I dard 314 if

S-/126/62/013/005/020/031
Elll/E435
AUTHORS: -Shabalinal O.K., Chufarov, G.I.
TITLE: Mechanism and kineties,of the decomposition of
wustite. 11
PERIODICAL: Fiz2*.ka metall*v.4'metall*v*d*niye, V-13, no.5, 1962,
766-768
TEXT: -In an earlier paper (Fmm, V.12, no.5, 1961, 697) work on.
wustite decomposition at 350% was.reported. In this paper
wustite decomposition at 400 and 5000C was studied. In the
present work the same batch of vustite was used in the form of
plates of scale 0-3 mm thick.with*&.lattice.parameter oj," 11-302
`corresp6ndlng to FeO.92 150- Annealing was carried-out in vacuo
(10-4 Mm HS) The saturation-magnetization was determined as a.
function of annealing time, the-same specimen being used for
constructing a complete curve.- X-ray-patterns were,taken from
the same specimen~to obtain the-phase analysis of the inside and
outside of the scale. , A separ&t*-specimen, which had undergqne
the same treatment as the other specimen, was used for the X-ray
Card 1/2

S/126/62/013/005/020/031
Mechanism-and kinetics Elll/E435
powder method determination of lattice parameter. Changes in
the surface"microgiiructurti''during decomposition weige followed with
.the aid of an electron'micro'scope (resolution 100 A). The work-
suggested that in.addi,tion'to the iron + magnetic eutectoid
the surface contains primary magnet-ite,crystalw.. The decomposition
must follow the equation
4Fe 0
_X Fe 04-. t U-.4x)Fe., (x 0.075)
.3
The process at 500'.C is'much-slower than at 350*C and is
different in other~'ways.'_ Thin iiexplicablo on.the basis of the
two-stage mechanism. Thire.are 2 figures.
ASSOCIATION: Ural.'skiy politekhnicheskiy institut im. S.M.Kirova.-
Inatitut'metallkurgii.-Urallskogo filiala,AN SSSR
(Ural Pol tecliiKical Institute imeni S.M.Kirov.
y
Metallurgy Institut*,ofthe Ural Branch AS USSR)
SUBMITTED.i September 23,- 1961..
Card~2/2+

S/076/62/036/011/006/021,
B101/W80
AUTHORS: Averbukh,,B. D.#.Brayninap D. Z., Antonov, V. K.,and
Chufarov, G. I.
TITLE: Study of_,equilibrium Condit ions in the reduction of manganese
ferrite by hydrogen
'PERIODICAL: Zhurnal fizicheskoy khimii,, v. 364 no. 11, -1962, 943-6 -244
TEXT: To find out the structure of ferrites and suitable:idonditions for
their production, the.-reduction of-manganese ferrite in hydrogen was
studied at 9000C.,, Manganese f,errites-of different coapositions-wers
produced,by sintering -Fe 0 XnO ai Ix tures4t 12000C in various atmospheres
2~ 3
(CO 2 'or,air),,- and by, sintering Fe 0 uno 7, MA 0 mi:Xt ures
21 Ar' Co + 02, 2 3
Debye patterns showedl:that'.the resulting ferrites were single'-phase. The
reduction was performed in,& mixture of water vapor (p 4.579 aakg)i and..:
H 0
2
~-3 2
hydrogen~'( IRK' 10 ~~.10 zz Hg).*. After equilibrium had been established'".
2
Card 1/4

5/076/62/036/011/008/021~
Study of equilibrium conditions in.- B100180
between ferrite and gas mixture'.* the water was frozen out, the p measured,
2
-the degree of~ reduction determined from the 9 consumption, and PO the
2
2-
-equilibrium pressure calculated, Tho:,phases formed in the-reduced ferrite.
were identified by Debye patterns. Reaultas Except for those in air, which
were higher due to oxidation,* the ferrites sintered in different atmos-
pheres showed approximately the same p /P -values with the same degree
H 0, H
2 2
of reduction. Ferr ites containing excess manganese owing to admixt ure o
due to~ ormation c U_
Mn 0 showed higher p f of Un 0 - UnF*20-- solid sol,
3 4 02- 3 4 4
tions. During-the-ferrite reduction, the lattice-constant of the'spinel
phase gradually fell until it was.roughly the same as for magnetiteo At
10% reduction, a lower oxide*phase-~sppear&d-with an NaCl lattice, thel
constant of which increased as the-,reduction proceeded. At 45% reduction,
a metallic phase appeared, with the lattice oonstant of iron (2 .861 2).
The-reduction of manganese. ferrite thus proceeds iii two stages$ (1) Re-
duction to the lower oxide phase (Fe, Xn)O via formation of non-ideal solid
Card 2/4

S10201621142100210281029
B101/B144
AUTHORS: Shabalina, 0. K.,,and Chufarovt.G. I., Corresponding Member
AS USSR
TITLE: The maximum rate of decomposition of wustite
PERIODICAL: Akademiya nauk SSSR. Doklady, v.'142, no. 2, 1962, 411-412
0
TEXT: The rate of thermal decomposition of wustite at 400 and 500 C was
investigated. The dipcompoeition products were subjected to X-ray-
structural and el6atron-mic.roscop:Lc.examinations, and the kinetics of the
process was clarified"b measuring the variation in specific magnetization
Y
saturation a during heating Decomposition follows the reaction
4Fe 0 Fe 0 + (1 - 4X)Fei x -+ 0.093. Details of the process; The
I-X 3 4
preeutectoid separation of Fe 0 and eutectoid decomposition are caused
3 4
by diffusion of iron ions out of lattice points; coagulation of vacancies
to pores which are not immediately, filled-with Fe 0 This porosity
3 4'
.facilitates the tr4nsformation of~neighboringsections. I'lecrystallization,
however, is also accelerated with increasing temperature. The pores are
Card 1/2

STAFEYEVA), N.M.; BOGOSLOVSKIYO V.N.; SHCHEFETKIN) A.A.; ZHURAVIEVA.. M.G.;

S/020/63/148/002/029/037'.-_

Thekmodynamic prop
erties -B18q/BTO1

0
_AH 0

_Az
8 0.

compositioii,of, the.' -'Z:1's:--_J~]'
-
-
8
2

~x 298

k
l/
6l 29

e
k
l/ ..
,
9
, o
solid-soluti n
--mole"
cai/
e.
m
ca ca
mo g

;-0.5Z .27
3.8 246;0 3 0...
3 Zn Fe 0
~0.
5 2--5 .4

0 - 7~ 26 5 3
33 U - -Fe
0
.3
-4
0,3 -,2-7

0.92 266~6

40 mO, Fe 0
34.0 Zn

0
1 2
9

.1 . 00 27Q-0':`
242.0 .
.
0
3 5 - 60 -Fe
4:
'X 'is: the mola -part of Fe 0 in
X
3 4' Zn F e 2~xo. the aata for Fe 0 are," taken', .

1_x 4. 3 4
publications.
rom . 7
The. latti'c'ti ~--c6n*stant:dea~e*as-es slowly'_1rom 8.445 f or.
;:.. .
'4nFe 0 Ao 8.44 R. for-Zn-' F

7 q2
O -linearly to-8-40-R f 0
j0 .-then. r Fe 0"

4 3 4
~
4
The'- curve e
versus'x has..th
safe -s i t 03 -It is con~-
alient po nt a
298,..
eluded theref bfei that- :the inve r8- i0h'.6f the e~inels!r*emaln'e alrddst:unch
between~ 0 -,~?c 4
-0-3

n
and that 1y
.I n2+ ions
are subs.t1tuted by Ahi, Fe2t.:ions "j!
etrghbdron
in the t points-. These lons are Almos t of e;qual sizi, - U*tWeen";.-,.--.-` j

0.3 and~x,.*1,
:x
-however the
.*.intensive inversibn'to' total inverse epin64
3~d ni/3

S/020/63/148/062/02~/037:~
i Thermodyn~mic properties B189/B101
the magneti.te ~takes'place,,owing't"o,the: redistribution o f the cati.ons,

.
'in
-'are 3 a 1
tetrahedr6n_and-o,*Uhed
ron~_ -t6r6lica~-, .,There gures and~.l

ASSOCIATION: Insiitut'metallurgii Urallskogo filiala~*Akademii nauk'SSSR*~~-:_'i

(Insiltitute of Metallux
gy ; o ad
Ural Branch of Ac' emy 'of
f
the
-USSR)I,'-Inatitut
Sciences .
.
-fiziki:metallov Akademik,hauk ZSSW`_
-

(Institute of of Metals of the!Academy of-Scienc s
e

Y
USSR).
SUBMITTED:. July: .14 462:

Card ]5/3-

/65/10/ob4/04/62i.
Decomposition;kinet as T -wd'stits-, 2692/'Bioi
0
F or.,, 644-dre ,-pojj2 jj;~fbj-16W, -..ta
0t r ional to-
h 44latloh
PF
d'b
vh & e,
a exp
ion,;i va t 4/29
This equ t i. " -
K. DA W9 a
as
wher f. ~. A!3~ t)
enot Ps-,
e D d -t tie i fusion'.coef iciefit-o vao nci4
A 1".. ik,
(1) and .-.increase WiLth'~--. h0_1~emp-ppa urel:upl 04.
t
,44000 d 1'i ihi
C an decreae es-, in -reac's In. a, riai,'Iti' ti
cally~ 1, -and Ayidepind'&i b
aqua
00
A.
ova'* .There, are-, Was
decreases a.b
AS'55OCIATIDIfs Ins itut -me
Ural~ skoke.,,tial lie ".-Aka, p
naft
We -,Ural-3taho of.-' C.,
(Ina~iiut 0 "of.- ieiin urd of i
.,o a i-e~
f
6be'
SUBMITTED: Oct r',.
AG
67 1,
.. .......
r 2
211

s/oo76/64/o38/oo5/ll35/1l41
ACCESSION NR:' AP4039618
Shchepetkin, A. A. (Sverdlovsk); Stafeyeva, No M' (Sverdlovsk):
Bof;oslovski V No (Sverdlovsk); Zhuravleva, M. Go' (Sver;1ovsk); Chufarov, Go I.
(Sverdlovsk
TITLE:- Study of equilibrium conditions during the reduction of magnesium-manganege;
rrites
fe
L
SOURCE: Zhurnal fizicheskiy khithii, v. 38, no- 5, 1964, 1135-1141
TOPIC TAGS: magnesium-magnetite ferrite, ferrite dissociation, ferrite reduction,'
~equilibrium oxygen-pre6sure, ferrite crystalline structure, spinel phase, magne-,-1,
si magnetite
oferrite
The equilibrium oxygen~pressure during the dissociation of magnesium-
manganese ferrite6 W-of the composition MgcMnj_cke?_04 (c = 0-1 to 1-0) have been
determined and some peculiarities of the crystalline structure of I - of. various
!.compositions have been r ful
studied. 7his work was done because such data are help
for the preparation of forrites and the understanding of changes occurring in
service. The equilibrium conditions in the reduction of I were determined.in a.
closed-,vacuum apparz~~us with a-circulating H.2 +.%D mIxtureo The equilibrium'
Card. 113

ACCESSION NR; AP4039618

a e,

i :oxygen a K K-
pressure was calculated from the formul
P02 p H~01 where ~p i th
is the equilib
1~0/% pressure ratio in an equilibrium gas mixture and KH
p rium
2
constant of the water vapor dissociation. X-ray analysis of I and of their
~
ypduction products was carri d out by the Debye method. It was shown that the-
'
tan m
oxygen pressure remains almo:t con
t (lo-13,at ) with an increase ofthe matgIlp-
sioferrite content in the solid solution from 0 to 50 mol. %; the pressure
increased sharply (to 10-11 ~tm) with an increase of the magnesioferrite conteit
from'50 to-100 mol. %. The oxygen pressure dropped sharply in the course of the'
reduction of I by hydrogen. X-ray analysis of the solid -phases formed* during the--- *
reduction revealed a correlation between the oxygen pressure and the chemical
characteristics~of_the cry*tale~.(magnesium,ion fraction in the' tetrahedral lattice,
it war. shownd, in ' .-
nodes) o f. I. par~ticular, that during the reduction the equili-'J I ___
Tbrium oxygen pressure drops with.adecrease in the mitgnesioferrite content and
increase in the magnetite content-in the spinel phase and approaches at.-33%,:;,;-,~,.,-
reducton, the dissociation pressure-of.mignetite. Orig. art* has 7 figureei,,;
ASSOCIATION: Inatitut'~etallurgii--~Ural!akogo.-filiiLla AWASSR (Institutie:of
Metall urgy,'Ukai Branch, AN SUR)

13

-
7
.7
.7 7 77
:

ACCESSION NR: AP404259 S/0076/64/038/007/18.11/18115.
8
(Sverdlovsk)
z (Sveidlovisk) ;':Averbukh, Do Do
AUTHOA:- Braynina, Do
1. (Sverdlovsk).
Zhuravlevap H. do' -(Sverdlqvsk5-1.:Chufarov,,
f
TITLE: Equilibrium'condlilcini::-in'the'hidtoqen 'reduction o
manganese-zinc ferrLtes,
SOURCEt 'Zhurnal.fizicheskd,y-.khilcki,i, N 38, no. 70' 1964, 18111-IM'
-,.zinc ferrit
age a r to,, a zinc f rr to;.
j. TOPIC TAGSt mangen f if a, manganea 0
ferrite reductiongiferrite dissociatioh,,forrLte crystal structur
spinal structure, inverse -spinel--structure
-Equilibr uw conditions 700 to 900C for the 'initial
ABSTRACT:.
itage:iof hydrogin reductibn ~o manganese-~zinc ferrites of-:"ryin
compo tion: are investigated., The -equilibritim constants. were
determined -experimenta 1y, n-d- th --o f
8 a equilibrium partial pressures
!oxygen followiiig.disiocistion, of the-feirrites were calculated. ~Th
a A.
Ilattice constants,iiere.,measured.- Ii vas.shown that.both the equilib-1
ti'al pressure o ox a3&-",
rium par f - ygen, and the latt.ice constants of a angan
zinc ferrLtes-dep!end in &-.nonlinear -manner on. the compositions I'
t
C.'~d 1/ 2

./A6~(mp)-Z/
r' i7
J
ACCESSION NR: AP4044888 S/0020/64/157/00611441/1444
AUTHOR: Men', A, N.; Sta-feveva, N. M. Bogoslovskiy, V. N. ; Zhuravleva M.-G.
I. (Cormewnding ma-mber AN 2-SaQ,
the determination of the conceniration dependence of some
funt-tions of solid so!utjo_-,q
nn 6, 19 64 1 4A I - 14 Ad
AN SSSR. Doklady*, v, 157
TIOPIC TAGS; thermodynamkc function, solid solution, ferrite, concentration de- 2
y
I r U
c
,z
~J,
I Ai3srRAcT -The of -hermodynamic functions of solid
Sidi c9 computation o t
sjlulions is complicated because of the large number of parameters which charact-
erize the interactions of particles in the solid phase. Therefore, reasonable ap-
p~-oximations are needed which give a good agreement --.vith the experiment. The
statistical approach is the computatio7i -)f -70py of
-1';' g:_1 r a -
wimnuz consideration of the near rd~:-
Fcont. for ihe solid solutions r)f on,- e n -

L 1-:io64_65
ACCESSION NR: AP4044888
tration C with copper magnetite is given as a function of the equilibrium egree
d
~nvers4on of solid solution at a given temperature an~ x,of the inversion of cop-
If the function ~,s nu-, a ca-n be
at Lhe sarne temperature
_~1.trned -in the first approximation, that x = >~,c. For t h e c al cu I air-, of a scont,
res-ilts of previous author's work (Fiz. t-ral. tela, 4. 898 (1962)) are used-
o
a
A
SS
OCLATTON- Institut m-etailliriH Svepd1ovsk Mnstitute of Metallurgy)
20Apr64 ENCL: (j
*NTO-REFr SOV- 007" ~7, 'On ~4
C.,cj 212

r
Z~,C(-F-1,~.-;ik,-)i-,t NR- AP4047330
of +11e. equilib.-~--
i uL i u i of solid solutions in We
SOURCE: AN SSSIC' --Dok1ady*-, ~,4~ -15a$ -no.-''4, 1964, 949-952:
TOPIC TAGS: hydrogen reduction, magnesiurn ferrochrornite, hYdrogon reduct-
mechanism, magnetite, magnesium ferrite, magnesiurn -hrom-ite
reduction o --he nn-agn c-'slurn errochromite Mgcr,. -5Fe
ABSTI. RACT: -ThL it 750'
o- the solid
-i~; investiorated, The equilibrium oxygen pressure, the --om-position i
4um wth thp or-
I
-rJ~~r.rp rif tiie crysta,
TgCr, Fe in the intervad 0--.x--12 were cieterznne(~.. Ur-,ma: samp!es were
04
x x
-pr ea r e dby sintering MgO, FeP3 and CrP3 a, 1200C for I nours, 'nold-Ang
.a-, 1000C for 5 hours to protect the spinel structure in the solid and
Card 1/ 2

77 _7-
L 23325-65
ACCESSION N11- AP4047330
-eduction gave a MgCr ron an6
Ovei 3-3.,3
lattlce parametters. U pp tc~ ~l
r
L
-u-vr, chov-.-ed a break, tiie ma,-4nP--,-.e czo:-.--~~n-.
0
2
d -Le magne s iu m ferrite content, `--)m. ~c) z er
-0 77, --'h se- fere t-
m t1 th el- n
-magresill chromite. L -ie E:olutions et-,veen . e spin P L
A 1 --0' L TaF6 04) the crystal lattice parameter-
c T.. 1,7-in " -4 s t rbutions (from V11 - to N
9 2 4
compo5itiva depeandericy did r. it follow Verfard's law. 0,"~ a rt. s ec, uat ons,
1-d-ur-

ACCESSION NR- AP404?946
q~_qrov. G, 1. (Correspon&iug
AUTHOR: Balakirev, V. F.; Simonova, M. 1. C~k
member AN SSSR) zl_~;,:"_~
TT'T'T,.E- Equilibrium conditions and mechanism of the hVdrO.FFpn reduction of
solid solutions in the Fe-Cr-O system
--TS0URCM.-._AN-- SM.`1Rqkl
TOPIC TAGS: Fe Cr 0 system, Fe Cr 0 H system, spinel. reduction, magnetite
reduction, iron chromite reduction, hydrogen reductior,, reduction mechanism
ABSTRACT: Equilibria in the Fe-Cr-0 and Fe-Cr-O-H systems at 1000C and
the reduction at-10000 of FeCt- -Yez 0,j solid solutions when 0,6x&Z, were
2-X X I.
investigated. Since the oxygen pressure'in the solid soltitions when 1. 04z-x/Q
exceeded the pressure, when w6stite dissociated to iron, wlystite was in equilibri-
ge solid solutions and iron was not formed. The equilibrium hydrogen
pressure decreased proportionally to the extent of vr6stite reduction. When x=1. 04,
the spinel, Wulstite and metallic phases were in equilibrium. When x-cl. 04 the
Card 1/2

L 211532-65
ACCESSION NR: AP4047946
I)n-1-ii-ious series of solid solutions were reduced directly to iron, bi-passing the
I I 'n r1s, Ot -n.- 'ne
If tl e solid solutions are represented as solutic) -%v tite in
n ~nrcrni'e, the magnetite is reduced completely before t'~ne ~T-or'.
'-~n slarted. The chromium remained in the spinel phase, enriching it and
ferrochrome. The dependence of the Lattice parameter on t:-e com-
spinel solid solution was not con'~nu,`US; thf- PXTen! Of
,c was not uniform. When 0 6 x 0. 7 the xps norm-
1, 6z~x!i-2 region, inverted. The sha.-P increase in wnen
decreased in the lattice naramefer of !1,e sz.ninel and in the
re-ion the increase in the Darameter Nvih chanue .n. fne c-c-mosition
,.-ias compensated by its decrease because of the increased Orig. art. has:
I table and 1 figure
ASSOCIATION: Institut metaUurgiyverdlovsk Unstitute of Metallurgy)

L
ACUY~SSI(Ai NR.I AP5018088
14 G Men' A. 14. Chufarov T member
All
Al
TITLE: investigation of spinal type solid solutions Ercm the Rtandpoint of ata-
tistical-the=o~~ics.
SOURCE: AN SSSR. Doklady, v. 163, no. 1, 1965, 144-14b
1 TA-Gs :statistical ther-madyn--mics, spinel type solid solution, phase campo-
sition, effective equilibrium oxygen pressure, ccupone,-.L ac~ivl,~V; S'I.Id Phaae
compositiou, con.'Uprational mixing entropy, internal mixing energy
ABSTRACT: This work is a continuation of a previous investigati3n with the diffe-
Z,9-Qe t-h-at th-e statst'.cal method of calculating the activitiesi of components in
J.-
aereeaent with
OXP
librium with a phaa e of- -4d N2 the baAs
the configurationAl mixing entropy and internal mixing energy!
Card 1/3

L 63763-65
ACCESSION KR: AP5018088
-AS.*==--R(~~,hLX.4-4In)., 4- +
ij X2) + (I + ~.j -f- +
m ra
+ k,) c, (~j" In ~jO + 2 (1 -In 0 (f + IT, (I +
+ Xt') c--(Xzl In 44 + 2 (t - X3r') In (t - ~.2~) -r
AU
- -.7,7
i-b- _,.-i f1~e id-e-
Of SiL
:4&4--is the-a- g -6u
actiOn between cations gpa-c*ed at digtancos- 0
gies of palred inter -- 6-
L-,t: Jivtan n t
cc between tetranOdeS of the spinel, the authors darrive P formula for
the activities of components in the solid aciution an,' appiy it by way of an
example, to a solid solution of mangarnese ferrite with magnetite. The rela-
(effect4ve equilibriu:m oxigen pressure in the system) to ferrite
10- 1(12
c nErat Lon cf is e-xperimentally determined and to -satisfactory
-writli theory, and, on this basis, c1he activi~io,~ cf. E,,=ite and magnetite
Lre separately determined. The sublattice distribution -j- is a major
factor in the activity of ferrite. The system of for-mulas preSI-InLed for the calcu-
lation of component activities is applicable for any solid sc:!-aticns for which
experimental daiLa are wailable regarding the relation of log PD,,I to the composi-
Card
-2/3-

L r15468_01T --EWT-(mj/EWPW/ETr-
ACC NN AP6029210 OURCE COM Woo76166/o4o/oo6/i 1239
-AUTHORI _XornW*vv-Tu.A Balakirovp V. F.; Chufarovp G. X.
ON&I 8vardlovsk *tdbia WtItute (Sverdlovskly Inetitut n6tauvr9ii)
ution's, op
TITLE I Wuati of 4611d, 661 "1 "'n's-stull-ferAte- &4 Ar6mite,
1234-1239
SOURCM
Miurnia'fisicheskoy khWi vol. 40p no, 6 196
TOPIC TAGS I magnesium coMpoand firrits, ahromite, solid solution
ABSTRACT I The, iolid solutions'MgfixCr Q~ were obtained by sinteAng povdated Mg0j,
F0203 and %O~ at 12000C for 15 hry tgan soaking.st 10000C for 5 hr and quenchiM in
vater. The ;e&ctz4on of N 1000 and 11000C and the doteridna-
ere
_b we op, a .r-. Id out in a vaeuum-unit in which an H2+
tion or 9quili B20
it
ure o1rad -ray+4 ti study the solid phases formed.
mixt
Aliih, was used o
WA
a found that;,.Vdg&rd9z additivi4 law is'. not obeyed by solid solutiphi of magnesium
Cr ' C4 when up
ferrite and ofiroilU; U tfie~"salld *products -of reduction of Wel-15 On
phaso
to 33.3% of. the lattei-hos been ri6cedt the phases, in e4uilibrium "o a
of variable composition doitsistibg of magnesium ferriteg magnesium. chro%te and mag-
notitep and a wastite'phaso formed by ferrous oxide and magnesium oxide; 6; the re-
duction.hili pr4_e4*d*d_*ov4 33-%'xagnesium chrovdtol, the solid solution WgO-Fe0
and iron are in-equillbAini. The *ilibrium pressureof cry h was ditorminid iKt
1"Cuid, 1/2

L. 06466-~67
NRI

Ar"
vildo U41, dogr"s 'of

sme 000*0WONS.

00~C. hilt I ;Igun
Orig. art
a ,

.120 om 00
7

ca
rd 0/2

L 22897-65 EED-2/bEWT (1)/,-,WT(m )/SMIP(b )/Z.-IN tIiP(c) JD
ACCESSION NR: AP5001240 S/0126/64/018/005/0711/0716
_qs o !~Ly., StartseN-a, 1. Ye. ; Antonov V. Ki
AUTHOR- Bog ___ _J_
- h_ys _Y. N~. ; Shchepet-Ijn,, A. A.
Chuffarov, G. Shur, Ya. S.
TITLE: Effect off the phase composition on the. magnetic properties of magnesium-
32
manganese-iron ferrite with a rectangular hysteresis loop
SOURCE: Fizika metallov i metallovedeniye, v. 18, no. 5, 196-4, 7 11-7 16
TOPIC TAGS: ferrite magnetic property, magnesium ferrite, manzanese ferrite, spinel
s,_llid soluUon, hysteresis loop
ABSTRACT: The object of this work was to find out whether 'the rectangularity of the
hysteresis lGop of Mg-bln ferrites is related only to the presence of -vacancies, or
-,A.,hether trtvalent manganese ions also play a major part In this phenomenon. An
Me-Mn-Fe ferrite obtained from a mixture of 34 mol. % MgO. S. 5% Mno (in the form
^_O~ffininnt Of the
q
.1) and 57. 57o Fe20-3 and having a re1qd-vek, hilh- r.
I -or ,~,11 L9 invr E?U pi ted. X -n n -
'he components of the spinel s,~tw
-31ations
r'd b- the ball 1i stic method, and changueq in
Card 1/2

L 22897-65
ACCESSION NR-. AP5001240
hvsterests loop of Mg-Mn-Fe ferrites obtained from a miKture containitig over
Fe2O3 is due to the presence of ,&13, inns which oause loca-I distortions of
q
al sti--icture of the spinel solid s and
i~
i.:)rmuias.
.kS,13101CLATION: Institut metaIlurgii, Sverdlovsk (Metallurgiewl Institute); Instittitflziki
mctal 1, ov AN SSSR ( Institute Of tJi-- Pb~faiaa of h4a~~
T
SL BIAMEM &6-3 ENCL: -to HUB COIDE.0 MAIL*
NO REF EZOV: 007 OTHER: 010
Card 2/2

CHUFAROV, VII.

Portable crane. Put' i Put. khoz. 8 no.10:31 164 .
(MIRA 17: 12)
1. 8-tarshty dorozlmyy manter) stantaiya Tomak II
, Zapadno-Sibirskoy., 1:7
,
dorogi

KAS11,10VSKIYP Ye.V.; BRAGIIIISKIY,_ B.I.; BUKIMNEVICH, B.A.; MIEVIGHp
Ye.La SHKURKO) S.I. MUST Ye.,L; MAYYER, V.F
GOTLUERi-NiM.,t -CIIUFAROVA G
Problems o a,or-..e,co.nomi.cs robleqr. ekonordki trud.ao 140-

!,I-," -'A I-
m - I

I .

SHOSTAK, 7. T. VITTK14 K. V. SHAROVA* A. Xe ;_~~AIIO~I'A.I. ~G.
Separation of keromius by an ion exchange method. IsT.51b.otd.
AN SSSR. noo8s69-74 160. (KI31A 13:9)
1. Nishns-b4illskore otdelenly~ Nauchno-looledowatellskogo.
institiita -plastiIcheakikh'. mom i Urill skly f Mal AN SSSL
(Germealum) (IoA exc,hange)

VIT
:Krrr`cz-n4 HR- A?qOO9948 '?. /nr)7A /F -1 1 r04/08-1 -I I UBS2
FM

A- K.
PJTMOR: CbUfarol;a. 1. G.; Sharova
I

VqM~- air'; T r7 ILI -1 Obium and tart arsenites
I &+AS;44-
,D~

IRC i V.
Zhiurnal- eo&

ta-;t lili~-ii6 -Ite, i ganic synthesis
PIC TAGS-- io arseni e-
TO n t na en nor
ABSTRIUATT- - In --this- for precipitation of niob1mv- 11,
an6 tantalum f-~om sulfuric acid solutions with sodium arsenil~e. N`obium pentoxide
Hb205 and tantalum metal (99.9% pure) werc jse~~ ~,~r iiiaking sulfate
apd, tantalum arsenl*~es w,~re

nreciDitated niobium and tantalum arsen-;tes 7-17 te ~V77--SSP(! t the

A -olu as

J-1.&20, Uzo and 2Ta2Q,- - A-=203 aH2.0.

L-Ccrd 1/2

J.
Heat ing curve-s- display an- endotherifid effect at 1450C for nio ium salt and- at -18
NMI
irl -antalum a-zoenite re.-Dectivel-. The en-i&I-hermir pfrect in due to -the romoval
In"
0013
OTIMR~ 004

I'ACC NR: AR6029472 SOURC8 C6EC--. Uf~/619 166100010061101OIXIO
i-AUTHOR. Chu
farovsk&. V.
-heat transfer in printed armat
.'!TITLE-.'Simulated investigation,of
SOURCE: Ref. zh.,Elektronika i energetika, Abs. 6163
!REF. *SOURCE: Sb.'dokl. k Nauchno4ekhn. konfe'rents1i po elektr.,mashinam.tpachat.
jobmotkami. Novosibirskjo 1965,'~ 33,40.
-ture- orin ed din a
TOPIC TAGS: peintrad t ma hine -he t t ar~if er, h e at transfer
coefficient, WIP
ABSTRACT: To evaluate qualitatively the heat transferof a disk armaWre carryinga,-,
-a disk
printed winding, a physical model was.prepared which simulated a DPO-2 d
machine developed-by the kovosibirsk Electrotechnical Institute. The model disk
200-mm diameter was-made-from glass-base textolitei Thirteen nickel rings 4-mm wide. I
O-2-mm' thick were pasted onto each"side of the disk. A'O.5-mm gap was,left between_~the
adjacent rings. All,rings were-connected in~series. Special sliprings and brus 5
wer6 used for connecting.to the, I~supply. Themodel was rotated by ar. auxiliary mo or*-,
i
Segments of.the:nickel-rings~wiih,taps,connected to measuring slipring .s~were used as
tekDerature sensors. Use of nick'al instead of copper increased the sensor
senpitivity. The ring-type winding permitted neglecting the heat transfer along the
disk radius. The heat transfer characteristics of-the model were determined at
500-3000 rpm.
Card 1/2 ~UDC 621. 3-017-001-57+621-3-045.21:621-63-04~-7~~~

f'

ACC NRs AR6029471. 8OURCE CODE: UR/0196/66/006/006/IOIO/1010
Chufarovskiy,.V, V.
TIT"q-. Calculation. of the printed winding and magnetic system of a disk-armature motor
ISOURCE: Ref.-'zh. Elektronika.i energbtikaj~Abs. 6162
~REF SQW k
dokl k-,Nauchnq-t,e hn.'konferentsii po elektr. mashinam p6chatn.
obmotkami, Novosibirbk,- 1965,-22-32
TOPIC TAGS: d.isk mot
or~ printed wiroing, electric moto
,._),-ABSTRACT:'Fbmulas ~~a~r_a'~d rived'which permi?",from nominal data of the d-c machine,,
determining the size 6f,its:disk wave printed winding'and of its symmetrical magnetic
field system having pentagonal pole pieces,. The winding end parts and.pole-piece
Outlines have the shape of,,an iwrolu:~e. The-emf formula is so transformed that it~
contains geometrical dimensions of the coil. The conductor erc;ss-seation is selected
:ftroi the"permissible temperature rise:and with an allowance for printed-winding
I-production t9chnolo
-S figures. Bibliography of 22 titles. N. Astakhov
LTranslation of absfy~ctr,.
6bB COM 09
UDG: 621A13.2-643.0 71W Ai

--- - E

. - .~ -~ - ~~. - -~ ~, -2-

CUMCSWVAKWftm Animals., Cattle.
Abe Jmr: ibr zhur-mol NO
Author PM4 jig,
last
Title ou the-adletances Cmtiliied- 1A tim Se~ W&
Contribute to the- FortIlliation of -PMu Aulmls
(K vaprom o veshchestvaM v eye=, sposabstrayushch"th
ciplodotvorwdyu mat sk-*khosM*tvew2yk1L zhivotnm)
Orig Pub: vetem"tvif 1-957a 7# No, 4v U5-116.
Abstract: If the at the bull As treated with rAi-almol
and the extract tbn obtained Is evapormU-41L
boIllng vater:bath:wA--1f the resian dilutia
by gbysiolegiftl solution. Is adde& to the tresh
MLMMMM Mhf1 +%& Unll +%m" +Jv~

- - ;, I ~- - i;~~=777M = . ~- , , ~ . I. 1.

S/O!51/6O/OOq/OO5/0lq/Oi9.
AUTHOR: LQuirandys I
TITLE:- Thirt6lgh~ConfetencA-on-Speatroseop
PERIODICAL: Optika i~',spektroskopiya- a9602 V91.99,No.51 pp 00:664
,TEXT; This is-an extension'of the preceding note. Five
sections of,the Thirteenth Conference on Spectroscopy dealt with
'free molecules and,condensed--phas6s Spectroscopy of solids was
discussed in 55 papers.' ~~Several,t6oretical and experimental
papers dealt with..excitdn absorption in'cr~stals. Other Workers
dealt with spectra.0f.crystals at low.temperaturesq in~-electric
and magnetic-fields2_subjected to'elastie'deformation, pure
crystals and crystals.with impurities, dielectrics and,
semiconAiietors. - There weie''_~ pnpers'on. spectra of liquids and
solids.with2hydrogOn-bonds2.spoctra of adsorbed molecules
(several--communi~cations)g:~.el6dtron spectra (60 papers),
vibrational and vibration-a-rotati6n.spectra (65 paper's at 10
sectional-sessions.and several pap6rs''at plenary sessions)7
paramagnetic electron resonance spectral and
radiospedtrbsoopy,
nuclear resonance spectra (the last thr'se subjects were dealt
Card 1/2