SCIENTIFIC ABSTRACT IOFA, B.Z. - IOFA, Z.A.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R000618620010-7
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: August 10, 2001
• Sequence Number: 10
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

SOY/78-44-36/40
Saturated Vapor Pressures, of Solid Lead Fluoride
proos.1 temperature, is more inclined than that found by data
of Wartenberg*and Bosse. The sublimation an'd evaporation:heat,
at an absolute temperature was calculated and compaxed to the
values given.in the literature. Thevillue ~4H'3 - 55-3+1-0 kcal/
0 mol
was suggested as being the most plausible* G.,V* Khalturi n
participated in the investigation. There are I figure,
2 tables, and 6 referenoesp'3 of which are~:Soviet.
SUBMITTED: JulY 2# 1958
Card 2/2

_-JOFA,_B*Z.; WHROV, L,V.; RATOV, A.11.
Certain properties of carrier-free radioactive lantbamm
and bismuth in water-dioxans solutionno Radiokhimiia I
no,6:674-678 $39o (KIFA 13:4)
(Lantbanium..-Iso topes) (Bismuth--Isotopes)
(Dioxans)

IOPA, B. Z.
-~xl ~--
Use of internal electrolysis for separating certain radio-
elements without a carrier. Radiokhimiia I no.6*-.706-708
159. (MIRA 13t4)
(Blectrolysis) (Bievath-lootopes) (Lanthanun-Isotopes)

57 tl,;~ 064) 68216
-5M, 5H 5/078 60/005/02/062/045
.AUTHORSs Nesme4anov, An. No, Iofa, B. Z, BOO YE01 6
Polyakov, A.
TITLEt Pressure of Saturated Vapor of Solid Indium Autimonide
PERIODICALg Zhurnal neorganicheekoy khimii, 1960g Vol 5, Pr 2, pp 2stIS-248
(USSR)
ABSTRACTs The measurement of this Ipressure was maas by: modified!imetihod
124 t i
of Knudsen (Refs 7t8) by adding Sb and Iml 4 at tempe:m-
tures between 636 and 7200K4, The two si*sts,n4;es with aw--~.:Lvel
isotopes added were fused together in quartzicapiflaries,, The
radiograms taken by Yu. P, Simanov at thG khimicheskiy fiOW11-
tet MGU (Chemical Department of Moscow State,University) cor,
firm the occurrence of one single phase of IASb. The con-
densate obtained on determination of the vapor pressure vras
transformed into sulfides the activity of which was measured.
The value of the vapor pressure of InSb'determined by evapG;-
ration of radioactive In is by far higher than the value re~-
sulting from the determination of the evaporated S`b (TableB 1P2,
and Fig). The values obtained by measuring t~e evaporated Sb
Card 1/2 are practically in agreement with the pr'essuze of the saturiited
a

68216
Pressure of Saturated Vapor of Solid Indium s/1376 0/005/02/00,2/045
Antimonide B004 B016
vapor of pure metallic 81~ (Ref 7) whereaS the Yapor preoaurIe
determined by In corresponds with that of eolid InSb. Pr1ior
to evaporation, a partial dissociation of the compound 6cciirs.
The vapor pressure above the solid InSb.jequals the vapor X"Ies-
sure of the metallic Sb plus the vapor presauxe of InSb# The
vapor pressure of the metallic In is negligible at the tempera-
tures applied. The authors point out that the determination
of the vapor pressure with freshly prepared InSb gives in-
creased values. By pulverization of the:substance, a disturbance
of the crystal lattice occursq and a crystallsurface with ex'_
cess energy is formedp as it was likewise observed in As 0
2
and ZnAs2 (Ref 11). There are I figure, 2 tables? and 11 ref-
erences, 8 of which are Soviet.

DAKARV G.M.; IOFA, B.Z.
Preparation.of antinnW425 vithout carrier by~the imtraction.
Radiokhimiia 4 no.WIA-746-162s ~(M;FtA 16si)
(Antimw.tsotopes) (Ixtraction (ahomistry))

DAMRSO G.M.; IOFA B.Z..;_WMEYANOV, An.N.
Extraction of complex acids with oxygen-containing solvents*
Part 1: Extraction of micro- and macraquantities of antimony
(V) with alcohols, ethers, and eaters. Radlokhimila 5 no.4i
428-436 163. (MR& l6tIO)
(Antimony isotopes) (Nktraotion (Chemistry))
Hydrolysis)

IOFA. B.Z.; DAKAR, G.M.
Extraction of complex acids with oVgencontaining solvents.
Part-2t Calculating the equilibrium constants of ahtimny (V)
hydrolysis in solutions of hydrochloric aciVand investigating
the mechanism of its extraction with di-n-b4t ether*
Radiokhimiia 5 no.4t490-496 163. (KMA 16:10)
(Antimony), (Hydrolysis) (Butyl other)

ZABORENKO, Kaleriya Borisovna; LQ],rh,_.Boris ZinovIyevich; LUKIYANOV,
~ - .11-4 ,~ I-,, -I
Valefty Borisovich; BOGATYREV gor ~r "Ole;g-0.VIVe"fi;
KONDRASHKOVAt S.F.p red.
(Radioactive-tracer technique in chemistry) Hetod radio-
aktivnykh indikatorov v khimii. Moskva, V7tjshaia shkola.,
1964. 370 p. (MIRA 17:12)

I-OFA, B.Z.; DAKAR, G.M.
Extraction of complax acids by mygan-contairing nalwnts. Part 32
Machanism.of extradtion of trivalent.antimany. Radidkhtmiia 6 va.4t
411-419 164. .3-11:4)

IOFA, B.Z., MITLOFANOV, K.P.; PLOTMEOVA, MI.V.; KOTIAGII, S.
.... ....... '.
Extraction of complex acids by oxygen-containing solventc. Radlokhimiia
hLrt /+,. Extraction of tetravalent tin. Radiokbimilm 6 no.4:41Q-4;!5 ~ 164,
6apji IP:4)

IOFA, B.Z.; YUSHCHENKO, A.S.
Hydrolysis equilibrium of zirconium cor4wunds. Zhur. neorg.
khim. 10 no.2:558-560 F 165. 18:11)
1. Submitted May 3, 1963.

SEMENENKO, K.N.; KEDROVA, M.S.; 10YAp B.Z.
Radlochemical. study of sodium chloroberyllate and chloro-
aluminate. Zhur.neorg.khim. 10 no.12s283~-2834 D #65.
(MIRA 19s1)

ACC NRg AP7010727 SOURCE CODE: UR/0189166/000/003/.006710070
AUT110R., Molesnilcova, N. M.; lofa, B. Z.
ORO: Department! of Radiochemistry, Moscow State University (Kaf odra radlokhLmii
Noskovskogo gosu6arsUvennogo univorsitota)
TITLE: Investigation of the state of selenium (W) in hydrochloric acid
solutions
SOURCE: Iloscow. Universitat. Vestnik.,Sariya Il. lalimiya, w. 3
1966, 67-70
TO11IC TAGS: spoetrophoromotric analysis, selenium compound, hydr6chloric acid#
spectrophotomotoi ISF-4 quartz spectrophotoMeter
SUD CODE: 07,14
ABSTiLACT-. A spectrophotometric investit~a.'Aon it; preconted O'n t1he stato of
solutions. Abzor ~on-
selenium(IV) at a temperature of 18 + 30 in hydrochloric acid
spectra were measured on a SF-4 quar7tz spectrophotometer) whore cells with the
following thicknesses of absorbing layer were used: O.lp 0.2 and:10 =. Selenium
(1'V) solutions were prepared by dissolving selenium dioxide in 12 X HM or by' I
.chlorination of black metallic selenium in 12 IMC1. In the lattei. case, SeC14 was
first obtained, and subsequently dissolved in acid. Both meihodsof preparing the
Card 1/2 UDC; 546:23:535:3 5~,e5
%3
e2.VA

ACC NRi AP7010727
solutions lead to identical results, however the time to reath equilibrium differs.
Thus, when Se02 was dissolved in 12M HU, equilibrium was established in seven
.days) while in the letter case'in one day. The abosrption maxim= at 310 + 3
rzicrons can relate to the complex ion-SeN2, while absorption maxima of 34-5 and
385 mmicronG are possibly related to the effect, of the glacial Olvent on thd elec-,
tronic states of selenium(IV) and'not to any chloride complox of,,aelenium(IV),.
Orig. art. has: ~2 figures and I formula. fJIRSs 40,3613
Card 212

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- on -1~1- .-
'I
PM=CALI T*Mtaik moskovakoto =Iveraltets. sorLya matemositi. sekhamiki.
1
assraccal-
, fixlkl. khlail, 1919. Xr ). pp 221-ZZ5 (USSR)
ABX22=2 Thl- Donforem- -as co-emed by the initiative of the
laboratortya r"lokkiall thislaboakago familtsts =u (Labora-
tory of Rallochml.try of the Dp--"-t Of 0~"*%17 a 9*440-
State University) and we, held in Na"ag frm Aawll 20 to
April 25. 7959. It - &!t.Od.4 by prot-sors. tmahars, aut
..Ioullflz collabaratT or 32 universities &&I coLlojes of
,be Soviet Union. ra hla o3-ing
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obs.1stry. 50 locture. - delivered by immaborm, of
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.;'ACCESSION NR: AP4027981 S/0205/64/004/002/0279/0263
AUTHOR: Sorokinal, 0. N,; Anikeyeva, 1. D.; lofa,, E. 1.
ITITLE: Protective action of metabolites in radioresdatant p1wits
;SOURCE: Radiobiologijaj, v- 4,, no. 2,, 1964, 279483
IT'OPIC TAGS: metabolite,, radioresistant plantp radidsonsitiwplantp
radioresistant plant extract# barley seeds ionizing radiations
Ireduced radiosensitivity, Cruoiferae
A]~STRACT: The present study.investigates the possibility of intro-
ducing metabolites of radioresistant plants into radionensitive plants,
to. reduce the effects of ionizing radiation, The f irat of three 'ex-
iperiments investigates the effects of radioresistant plant extracts
I
acting on barley seeds for 19 hra beforo irradiatiori _(4000 r) and for
ilq hra after irradiations the second investigaten the offects'of
Wadioresistant plant extracts acting on barley moods' for 24 hre before
t
0
irradiation (500 -r),, and th third investigatos~ the effect of. radio-
resistant plant 9#racts acting on barley soeds~with torn colsorhizas
!for I hr before irradiatione Survivabilityp growthp and chromosome
Card 1/2..

ACCESSION NR: AP4027981
aberrations served as indices, Findings show t!
hat a number of radio-
resistant plant extracts reduce tho radiosonsitivity of barley seeds,
Various plants of the Cruciferae (mustard family) whose extracts cone
tain mustard oilp rhodamidep thiocarbamidep and-gluopaides contai~fting
sulfur display high radioprotective action* Vitamins and growth
)promoting substances probably also increaso*radioresistance. Radio-
protection is higher with extraets acting on-seeds for a more prolon-
god period after irradiation. Orig. art, hass tables. J'
ASSOCIATION: Institut biologichasko fiziki AN]
:SSSRP Moscow (Insti-
~Ute of Biological Physics AN SSS0.
.~00
SUBMITTED: 180ot62
ENGLs
SUB CODE., LS. NR MW SOV: 003 OTHERt 003
A-
-..Ca~4"2/2

SOROUNA, O.N.; ANIKEYEENA, E.L.
Protective action of metabolites of radlorvs~atant; plants
Rudiobiologila. 4 no.2t279-283 164. (MIRA IAc3l):
1. Institut biologicheakoy flziki AN SSSR, Moskv&.-

:~wvn~iuennild lo-wriojura, I.K. Kiri-lov i V.1". T
1, . -;Xy
pervoi poloviny XVIII v. L~,.qkva, 17,luografgliz, 191~9. )l 1). T)D;: "'acIns3.
0
SO: LC, Soviet Geograll-hy, I'art 1, 1951, uncl.

IOFj',, L Ye
Scryl
YiMWAN; STOTJ TISA A.41"WISKOY SSR (E.,.zv,'.r, CAPIVII OF XWil'llk'
~MC)SM, U, U%VIRUZ, 46 P. MUS., BT lJOGVNICAL M37
E"
7!OTES. YHOTO"'J""NT COPY.

IOFA, L. Ye.
Geography & Geology
Cities in the Ural province. Moskva. Gos. izd-vo geogr. lAt-ry.41 1951

I0Fk, L. YE.
Defended his Candidates d1viertation in the G-j raj& FtLulty at got!cow St&te
29
Univernity an 2 June 1952.
Dissert,ition: "Cities of thm Urals."
SO.- Vestnik Hoskovskoge Universitata, Sariya ?iziko-Ha"wtIchemskikh i
Yeiteatvennykh Neuk, No. 1, Ho3caw) Ftb 1953, PP 151-1574. trantl. in
$4-29782, 12 April 54, for Off. use only.

TO?A
L , T-E-,
Russia - Descr-.-ption and Travel
Forerunner of ideas on the division of Russia from the point,of view of economic
geography, Geog.v shkole no. 1, 1953.
Monthly L ist of Russian Access ionsp Library of Congress,, "W 1953;.~ Unclassified.:

UW.1 Y~-- o 7ra - -~ f--- -,

ICWA. L.Ye.
OZIf o amd geographical activity at Pol.ft .4 POSAWkew.
Reviewed by 161.1sta. lsv,Ag SM. Ser.g*4- ms-5:634lk 84
155. Om 9: 1)
(myomov. Petr IT"ITICk. 1712-I'M) (KII-kow,

IOFAI LOTS#
Twer-Kalinin. Vop.goog. no.4gtII8-133 160*
(lalinin-loonoodo conUtival)
(MIRA 13:8)
II

SAUSHKINP Yu.G.; SOLOVIYEV, A.I.; YEFREMOV, ru,K,; XoMiNIKOV, Y.L.;
-jQFA+-kt-Ye,; DANTSIG, B.M.; BARKOV, S.A.; GRUZINSKAYA, V.A.;
BARKOVA, G.Ye,
V.A.Kondakov, 1886-1959; obituary. Vap. geog. n.o. 54:174-176,
161. t
(Kondakov, Vadim Aleksandrovich, 1'186-1959)

IIVANTER, V.S.; MITROFANOV, A.Ye., red,; jgfA M.A., otv, red.
[What to read about the construction of logging rohdo-
index of recommended Russian literature for 1958-19wi Chto
chitat' o stroitalletve lasovusnykh dorog; rokomendatelinyi
ukazatell otechestvennoi literatury za 1958-1960 gg. Mo-
sk-fto 1962. 32 p. ("IRA 1612)
1. Moscow. TSentrallndya nauchno-tekhnicheskaya. biUioteka
lesnoy i bumazhnoy promWehlennosti.
(Bibliography-Foreat roads)

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90 06 Report U-1615, 3 Jan. 19520

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1. IOFAI Z.: USTINSKIY, B.; and EYMANj F.
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OThe Electrocapillary Curves of Concentrated Solutions of ieddso:
Zhur. Fis Nhial 13. No. 7. 1939. Part II. "The.Adeorbtioi;of
Ions in Solutions of HCI, NBr and H2504"- MUO Electrochm'ical
Laboratory, Received 9 February 1939.
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u a &I _;i-ii a a it 4
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a a Goes 0 1111 0 0 0 0 00 00 * 0 : :
too
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fat 0(
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o
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tolp'l
bu-"*" ((w Ov 7 N, Rod 1j),q
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hirt"ish I, sitio, tiq all ,oo on gi,o% p ,V. I-hr rvpolp, arr
stult-urtool '"ItlIcAlluffst.
tkwi cd scoam,
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The awargusicts 4a4 dise ""GIAMM XWA&M
d
V
V
N

ff F .
oose. sli
.
rallopitiss
, M, ito. Lots, Univ, MOK,
Ivet'Yokloss, (Mccliuch M),
0 0 '4 J. IlAys, 4'keofi, (USS.R.) 19. 3U-404(1045) ---A txwololl
fill 0 im jig. 6.6 clo, Ili %flarn., is tint& the Cothoile, ON't A Ila I
wound It tile viode. The sian. is 0.02 N ISSONo + U,
Yli%'O The put,titial v (firferi
11"ifir') a,variouto isointo on the cat ttill to Nealomelletric-
hwe SW tile toul CUS.
Trot 011rittilth late ott4ifurvil.
y tun at" The T4111.
fint Inviraws with -it store rapisli
00 then reaches, a stutit. a little greater thAll 111W (fit' tillt'. $tilt
0
0 llecrea-cis when -vv further locresusess. At viary great 130-
initiations (at -0 - 1.5 Y. (or trioce) there its, no PA. In-
00 .9 11~j twevit the center and tilt tilar. lind I hiervoin-a with
1:
roplillY. Ailing this lorwilk-b 11 Is ovilliviod. When
dplioll"I vultdat. is Again Ockluccal. a 11Y0101156 of Pulad".
a
J
.
-a

1

f Op 44 141t a
fff 0
if

V .10

IZAV *.Aw 11-1- 1 .1 01-A. J.
~'t .

-
hostwo-ro Ifir
vNI411-filn Ill
om"fre.
1"thrick"Oll
0 -.00

s
0,
o
y
new fir isdip remisinst also) M inallisr 1, When ralbodle
1
Alto" is 1411414
tile (14114-hip Movirsin"t i. 00
,
risitho"Iff starved
At sjuall -
vothisit
.
v
the sonvern--rit 6 molleralle 4aid dirqcqfd Nivirs the "Atfir
t0wanti
the
I
Wh
t
h
l
l
d
l
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iff, -it o
e li
ot.
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fir.
t
tis ifinc
icof t
le r
11MAPIllary most.. a Iliall 11w;"is near xI* fti
on furiber
v
Iftirrellw Ill -1, it inflor" lotwi -4
tilt the c4owr this clithatto
andthialflotitris, A4 long Its jbit, tins 14rillible, 1u
rapi,ily .00
movirs I'loslulls It 1XIIII InOst blistlot still Auto C. T1*
'
ninsoccomil is wfak for sloosillfilmt dw the dim
Mature
,
-
'll
i
4
f
.60

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1
It
f
t
it costrent-v, to "
tv" Witt the
nst.
l
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U 4 at 00
"Willi off diffi-troll N a 4046-04 (1,06 A
Arf$O, 1102 Ills
110114 foul vollairvet 1110. i.tbts, tilt. VdIisittfs ireolifili
f he inilliencr fit
f fit# wrtlivit tell-kift 411d this loo al"Pol tip.
urn
* (it
O
o
,
'tile polarogtophic Imt."t I 1110.11KIN o*
lpy)ohjra ,
are illwitc-I into the extonsul cirLult, This is explained 1
3:0,
fly the hy,14-17t4L* C4 lkioUlft*1100. Wistilithe external it.
Filfacwc R k onsall. I incirdtlo,* "twos the Jig drop v-
so
When R i$1419, 14IMS [kit VOCY With lbe (Itop istuslace. tint '00
CAL is high whorn little livissoll-sin -tarts, the 4ofilliFIL61111
virroll"I by the high it's]. perilitis flullift 1:1* OrT arivarth

0
of ibis 41fill), the jig eurfossit is "fit 64041fa. 4114 fit* P4410. 111100
graphic infix. wroll.
-
goo
A It I L ollfALLVOSCAI, 1,111114411 CILASINKAilGh
toM., '60 4.0 441 .....
U 111 A,
0 0 0 0 0 0 4 0 0 0 0 0 0 0 0 4
.
T-.m a 066166080 Soo 6 so 4 so 60004
as
goo
it
Off, lij., 4
Ii i vils~, is, hu
an I 1 4 N I --v

1e e 00000 0 0*0 00 go, 000' 000OW-0-Ces,
life **#:1*** 0o0 64 06

11 31 a if if it v m So 48 U As
A
- - - --------
tath"111 Md tb~ Mtd*AkM Of die "d*dk 10414COM
of tumedge. V. S. 11agotalill anct 1. A. lok (M. V.
tAmonolow Momw state U"IT.). e0wWWW. Orad.
0 .00

90 U.N.S.S. SS. 0
420W)On PosIM).-The
electron coed. of WO, to consklt"4 cm the mectumi-to fur
all the mtbwk fleduction, of The YCHOW it"Yeirkle W(h to the
W WA In clectrartic "a. T1W th"ory thid Int 3t.
-;Tn .Wn. new the cathode wb as an intertned6te arat
In the mdoWn "in 14 ticluded. Ntnpk two, wt as*
tklKribed which suppa" the electron cmd. theory unit
am expL%Wd withal any mmi"ption as to the aWarvice
of fnv 11 In Wo. ow the cathode. If. Wt. INWAY
Neel
see
lee
we 0
Iwo
400

200
Noe
awe
14* I'llill)AN. -
ton**-) -A low W-Wf~
; Mlii"W-Aii-
1;-A lot
U a AV 10 Ali. W-jr
0 41 a * A 0 0 0 411, 0 0 0 0 9 0 9 0 411, 0 0 11111 C 0 * 00 We 0 eie
io 0
,
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'is 4 1 11 1
040996000*0606090009
9 so It UtI14314 fin IT a It a m off OR of a 0 a M 10, As 41 0
S-11 f 4- Q a I- I-- M-
i6o
"Mom Now low msdmww
AW** Rind X A. 1dra- Aere d/
rodemy of glpffees df U
age
410 1 p 4
.00
gas
oil.
AT -0 1.1 j, j j j W,W
Ii Ilion list
4 ore
0 Wo 0 ej
0.0 0 0 0 0,0 0 We A OlItA,;4

M - - - - - 6 - - - - o- *_ t o_ -0 4 -0 o ii i 0 . _. ~ - 4 111111111111000111111% of
P: I W! it 16 0 Ot a 46 a 466W0
LFA
zoo
0014 at Lthokabittivi "too " latuff" o1I_-_ 7_7
ken in AM96. V. A. Ktutwt%ov isr"I'A A. 1,41A Maicialli 01,
oose V.8 00
'r"
.vniv_ Mrowl. J. 11Y2. CA.M.
WOO
41110 (1647j(hs Rulld").-Tbe method Of PdAli&Uim CUOV" this slows the iits"isiscli of a ,v66. th4l". This"
is used to det. the maicklialsm of Inhibitor adino of W1. Amletrucs both lift- itiles, 4 Fe a the blitWitest (4, Ill; WoV
ew1pilt. *oh-troscop"y putre Ile is poWtud fit IV
00 L 10~ ka into. at is CA. i ansp.~% the rlf%vt all the antakfie I"ll"iR44:14.10 ham 14 titax. at C .00
7. cal., MA its plAcnow 0
0 . clect"ItIc in N ICI i* Cuirwo IU's At, This amit. petlihibly If thm woo
go AS400 b4lis i Am dirid. startins Itut" high ralbWee lbuxtreu into 111A. WW- %A1," kireel"S ths lift inkle, taroothews.
ool 1111411 W . IrIWW4;utvtl anti it -N tW4411"l- WhWh 11411- A% ill!11110114 ISV tA4k4k- .00
4) AVOtgl"IK' - it MlIffell t+ 111JAIII v. bl, IWO
I the *M At kow I valtito lugh Ill I*uv N my plit"Itw 44 Fit
.11 Anit 141 -lQVI W. by thiatillse- t"DiCtA I% a 000
Wlitul-
110 M1 in tow It h4h i v.fiwe, Stirevietiritali-M jwwheel *it siml N11. .11 .040
it.$ , 41MIVV 11) "). v inviewwo (Gir CAtIMOW
00 tuieris.lliael) ter limfrAtes (tow atilmlir lKilaisafloti) lilt- 1. UWA as ildiallitur. its 11,1M. fluesh4tal Arlawne the tw # led
VAIIV With 111ft i, In I he I:; - see i. Al It's 1.1 is -An. .9 Pw to 41,01. wrr~.Irtmglr it 0
t !UAlkxl 0
sea (1,123 V. along the CA hol and 0.417 V. Along the 41148,16C fluellic PoLulsettlon. Olit'll libei %11pl1mhyVvW%6. If Of.
"Wvv in V IICI. InlellAtAXII, (tetrwq"AmYLU"O"Iinlil 41,90Ws also the Ilothler 1141TWiNer %Mv, WAUI-~
000 indide (1), as"ine. two quirsuline derlyn.. tribensyl- lady. Thew cosupelm. herm Micittivo man. 'I'lWir
004 bromide, etc.) fil- lesser t0ort an &mile pt"isatim pmmmsibly is date In
OOW X"k, itibect6ou to the writabilkly co the ijorcal by Atiodic polarj.
ffrzLw Thirin-
rrra~ i% few file xmldi~ jv-V_, a"Ming Owt thw jalion and tO 4AllU&i4X'lh? little hy The th"wiving 1.1?.
so I IrIZZ-V Thr Vale of C'n4gutts; 44 141 fly Fu Is Is' 114.
well, . to Ile vV01 llWXV IIIAU 141001MAH410 44 Owillittell and woo
11' Ill. confl-ty to 4:hApitel. d al. (C.A. al. 29111), 1" file ill #1W IWV.Mfk', 14 ilkh"1160,41 oil h0nj 4*tr
8 in tinve. Wben eumlWAled to fritrifo tiri1.1.1=1t%1" too
evellsetiolCuirent.the 1voterelivilol Fein NIICII?
in the jw~ukv j4 16) legeld A X 10)'0 .111 It it - 11.1'ji 1111141 with Mitt
iVhr" file witnt-n. Cul Ow WhItAlm 1A trill tia" mw ollivil, aeol I j%ml itili,intiOL IWA". Ill*. .48W 411!
1,15"bli" V` It"'. WAAK% 'llilm qkkos ill" 14-
W.b.,."Vf 111-4 VilAtrotillif, the .0111111C1-111411140-1111 It, bit", *Msvtt key see
aull the #Att to -julOtAlk-Oll't *4411, Of POP b0i'tativ allikAl fit- 114111410" AM IPAI$4111wd 4!"It ke, I*'I lviturpthas of catiew" goilli
the eevftl~
firpeftleat W C: Alghough the cathtmlir "VervIlitase con- = to Him Ixtutdis " -A
" 41 ,1 -4
-4911. 1 , tro
finales to incyraw with C. The We ell spontaneous sell". Kilt iteitort, oil t Cat W
k Vie il(Altut to 2.7, X 10-4 attep./cl".1 t, N IICI awl to _4114i the analk proccoel ate differrat wrateatembly becanst:-
to X 111 6 alop./CuO in A, liel + 6 X 10-6 M 1. All- Ile Is tviotred an threerholemufAce,voUivas Fell; di"Ovqt
car'"Iffull vittly Ake$ edg-t etc,
phAtie ales., lwunw and oi-tvirlic acids, birselcor
old a-u4phthiskiwoutfouic acids have no inhibilAw ffkl; 0#0
woo
usetipt map 4"T 909 U"no4l MZWAG
a v so is P, V No a 1 0 11111 0 0 1 W a 0 re a 3--17- VIN
I'D 41 4, is I a It
00 0000 00 40.0 0 0 0 0 0 * 0 4 60 &.010 000 e *I* e *10:0 0 o * 41 04-.1
1~1*v
0 0 16 0 11111 00 0 0 0 0 4111-11111 0 0 0 o is 0a 0 0 0 0Qi!io 0 0 0 Of

IF IF w
I
2._A t Al P It
_A__ P-1- L.A bi A -4 m 1. Q Q a Gke
_ It J,
1A i

swill" two at "Nau b 41
'k =6 11
bfi
ft:X
W A
N
o
)
.
l
mc.
s
.
5:Q"-
MOAK) 31 941-4(1047). - ,
w
w
Forms -
w

06 nwb. a firk m uim.

a Eli byW0~do"aKur,WxtMyl~Kobft" Oot CA 41
00

A I a. S L A_ SEV"tWicilit LIVIONAUM CLASWOM
klo 4
1304
.............
too
busivic All; a 4 4
0 0 0 ale 0 is 0 0 0 0 0 so 0 0 Ole a
GALA'-&-S -0 S a- a -0-0 0 0 0 Go***,!**

Fonnad" of Oky4mes poro"s In Wf-&P"v$d
Alkali Carbod Calls. A W& X U Muism-vA. M. Vw,
Of
NI.W.Vw mail VOW 1. Aw, J184W. 'All". J.
Chein j It 3"(1947)e-TU &k 44 utd a the
dej~!"" pro" C 4 91
A/C Cew is "Aply V04=1Z TIZI Part of which Is
totoothetlet.
trade. Ilowtm. a imp, Pon of im; I A Is retahmi In
the vell. and MY Um"lulat" to a Ofallonary cown.
k1mrodlegon it timo,., poly, I#mmiiwd I do 1104.
lou of the 24 Okettrifis, Catelfis Comwou Up 411-M-Or
Mem over the amt. of Zn 41toolyttl by t1hwe I t. Par.
nultion of H^ is v ematgradet! by, catalysts
which can be eMw ted in advauct Into the C
-ek-cimle or deppelittl an Its surfea.
Z.Gr,'a(A %'Os*rKXuOtpr*wAm*Ke&vdvv.
and salm Tz~. mW M wore tated but fouii4 without ef-
lelet. liviter rrsido ~ wffe obtained b
,r tM 2ad nwiltud,
r With INICIl deposiltd an tb* sudam. Catslywl fkvt1od"
h.tvw it bigber polowkil, "Ing the em.l. 01,11m4 tell b
13-00%. pudiWasW at lower temp. Ah" Ion #A(
from the atr is redutiml apWox. by a factor 2. and the
-cuiucity ot.The tell is lacilimled by 3")",v 6 usidaly
to the mducvd vmT.Wou of the Zu. The artloo of Ow
cutaly-bts cmibts In On inhibition 61 ibe foroution of 11)0~.
N. Thod

.4
".1
-4
~r4
0
0 4

of A
sea
Ski
feel
ifiq,
a IN
sea
W,
S
o A i
Sol
Ito 4
001
Sol
Sell
404
Vol
04
0-0 00

IOFA~ Z.A.
22971 lbaktsiya voistanoileniya kisloroda na rtutnom slaktmdo. Zhurml
f1s. kh'alig 19490 Vyp. 70 C. 828-30. Bobliogri 9 Mazv.
sot UMPIS' NO, 31v 1949

IOFAJ Z. A.
30165
Mirlina, S. Y. i moisyeyeva.. N. B. izuehyeniye protayemsovpprotykayu
shhhyennlkh na tainkovom elyektro(lyw.el~wWoth so, shchyeochnlm
elyek-trolitom. Zhiumal prikl, Mmiii., 1949j, No. 9 C, 983-~4.--Bibliogrt
11
V.994
SO: UTOPISI NO. 34

CA
Promils" law" "also an she SWO afewoods of an
SW. -21,44afti-M. VL4, mirliffa. and N. 11. A44wovis (M,
V. Ln"tomposov Mfor Ifniv.. Maticow) 4har. 11YAW.
(I) rho 21til
1~11M I I -
*"vkv W the Alk~ Xii-V rvil to cbmartrii"41 by
t .4
1,1411 t4 NOII h dawthlog to KlIzal h + f1co -- 111(011 h
#,KOII. Toduckidir the nature of this rot". the xym
em
True mu.
Is Ito rrwbfll even after 3 Months. either bv %MMus"90
whilia ICOII main, no lis, jolpta, from 4 talortmAl-L allot. %'fill
imorframilvar X011 emom . Itio, z" rVittle"t to I he "plot. Ift"ftwe
At W, the culive is liniffest by the da4l Swint of tittly. its
InO anof KOII. atut not "id tivictitr is famled; the =An, I
that Votint contAins2AI equir./lis- ;v! slnvmltf~ A10".14tv
dwate content a the a411 It 1.207 - I - M equir /bit., lififf thor
viN phair I- a itilitt fit ZaO. K011.111ttl anif offroll,
Kill lisp tranoddim of the at0l I;ItA%r I#Axn ZrAt too
K1117110, ftvt"v of M I rillsov 48 4.1 lomalliAli slits 3.141 111
Zoiathorsinits At M)'. 1-44IFIgeol AsItAliwl rrMlt% Ill Its.
uaj "Agslog" of the toidid, emolsting In "MAI 10" Of
'7
1 10
110.
MW-Tlug In gradual Accormor of the awy. whit* dra-91,41
I lot I p(IIIII. rWVC. 114 CM"ttAmf tit (be abactrastilly
high say, of frV4hlV l'I'lif Z"(011'sir Ill The K'it' pell. IIW
NIWWte WAtIC sultans 41 lisp hCROV111119 411 she %11141 Persists We
6 tstn its cmupwivots with The Imly, of
I Or. That, fit KOII IVS vosidv~/kjr-.
I n(Olf 4 iflommosit'", 41 andvi". to
Ito voile"t tof 113, 20, and 3 it rquiv,/Ita-, taiVroww"
Xl- v 4 tit%
Its the evil the nournis, at 41 amint . of r"P..
astain.t *it o"ll vask-tv, PI l-'Wevialy.4c, The outirruld.
souent. rvklc"tlv "err- no* true nombl. but cWhIfilad wshis.
In wbirh the di-prrw phAqr formos asslat matm. to Ove
J1111. VVII, 11W "III IV;-1 Its V%Wk%i. alkali "I, fom It ndr.
0
UJI
14110011istful /of I" Puto NXIIIII Anil III NOR visufjs~ 911111 114.
to m4likirolvIsliom 4wr4oaq
thoovift.vil 1Avtogrooill
with ifitt-traishiss %ANWIi. Is( 9 M 0#41 tatlestodfix mioicsi.
3
of KIMA; dolefrism 4 ithit titillij mts in the suctit dim-
tion. much "we isminisly In thc Offe"tilop of Sitacalls. ~ On
dopoh"Itiltim. mm tolmofert" Urtueff of voliatial, at I A and
A v IM stur# 14014, allot III I it slid Ik 0 V, ill low IN -no ! 'it
1-he 611's 6411404 at D6 to Ovil"111V
Ibe revall of the rdle -4 10490416104 of j"111011h being Strosur
Ilia" the "iv cof its *411. ~ On itiftirse tsclorwit, aw (fit, 1).
itkIVAIWO, 411111 I1r 1141101611 11IM1111til "$(air ;%=' - but I lim,
4VID OWPOOILISP ITITIAOIN 1111CISS1101, Is,44val6mo lilt
Z11 141milrd 191torlir oil Iffmi "tarits#* 44 I1W Ila
1.10 It".4, .4thl IIIAI .1411tendo, mt Rhot lo-rup, An's the concol "A
WIL A sIdUmis I 1011fati-oll, d-Illf f1ct th"t in Ivifl-
thr"i4nopliwivatkintatrolow temp.
1 lie kiessistni"It 4 the 1W1 Ile-
1*1l I1A.^jV4jsou dl~ Wi;i. At
K
.1 twlm W. in twill*-I, Ill Iota kxwd. OU
IN
I tie In outair tow-tom" J*j,.%4vv .1 f,mvos fromp, but Ww"I liv-
t.,Wjr. -rise s44-1% Athqj 6 rs sikill Iff, due lot furao4l pon: c0 4
ruaditimas v;lft*, %be vallil Um It, i4tbin /tits athe sicitolklor
Avul imciculm almlilk-Alked '11 bilissivq, 'shhh ftmm% mof "I

0 0, a 0 0 -0 0
A
0 0. 0 0 0 0 0 0 al T- I
NA lie 0.0 ~4~4~~
fall I I II V 5 m it 1* 1) T
: U A' 4, 14 11 V 0 40 $t, Of it 0
A I -C- A
, 1, 1 A-L, J
'24
a of On at Neff"I
M 7
- A m'"= - 1 1
,.I of
Of v, 23, July 1040, P. 8 8-938,
j Above fedudgm k dOwu t0 tAs two stclu:
i forolaft of 11.0. at low -cut
si high. Infunkcing hdon W". 1QW1,1:Vf
top
u6n to water gimiled relott"a to L-IMIM& C
Iw,w
of Ito. J.
It
. (
(Mg CLOWICOVO
ILI
t Ms--
1101001 1 #;two 16;~Nll

The passivatinji on ec at 481340 me taoma boo ft seam
tratood ad 4201mboolts L, A. Metivat4m
A
,Mmbitv- !-t"Us.s. V, &t., V 1.4mat4mootolva).
Ifpawy Ak.,J. Ajob ". uli-ItItHIM, -in
view (4 flusidosting the flutuirc .4 t6 cateca.
.4 1 '. III -, alM C1 - 4211% in that ard") ad OW
rAte 4 41i")Ill- I'# Fe In II,S(X, Calms a Ill'. tathodic ¬
at"ItC f%)IA"A.IfJUn IMACU0410, 0 WtFV (19111. 101f A111 K
'I I
a W 4 X 11,S .. withmit ami with 0.2 N land OA4 N KI,
Te.p.. -0 111,% lious 4 the h's ni the 0A. A-11,111.010,11Y
KI trstalts in its InLcrAw a taw wit Its the
'41".1ic icmuolual.j ve and, luutkuwly, im the catismile
evibilaim -if fit. Che stAtimstry or lot shifted to the neat,
'Ide fir 67 Inv. The rakta Of spuntAnctioas P.An. N Minted
436mrs. With WON N KI. the ratfattific 40drileamisms
whethes tilt- sooAmursswnt, Air ittide alling derreA~ing of
ItictrAsing C. d. In the to t"Aw. it stir cals trial as %but all
lilt a few ~V_ .10 Own (larnt'l C41 aps".4d. ju"IP4 Isis AM
fronAlloo, Itialt Willi all, f~aisig CA.: flit him fmiled III nLq
.11"Millrd *I It wml.1 1~. thr"U'th Im*I11s,m 'd anton. At
Illshrr CA, ~141 t".1gr ficlt ori, it the filas "". tomew by re.
werosi'lo, miompti"s, too PuUtilloolli(Ill, the Oil" ill
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0.2 MI. N Mom sod maks a powrwsm la an enwe vowel
chatrwi high In w%h thim"

VMNK , Aleksandr Nmmovich, 1895-. redaktor; BAGOTSXIY. V.5.;- 107A, 1M.A.;
KABANOV, B.N.
(Kinetic energy In slootrode processes] Kinet*4 elektrodnykh protsessov.
[Pod red. A.H.Frumkina. Xoakval lod-vo Mookovskogo universitetaoJ952.
318 P. (MLM 617)
(Zleatroch*mistry)

joeA)
Off THY THIC0111 Of'nr~OAIIWITMN OF AMAISIAN1,11 11V
SOLUTIOM OrjjA&=1,yTr2, U-~,
loin, Tranniattt! from Zlmr. Flr,. 91,11n. 26,193-2011
-1r-1115)
in T 0kEC
The decomposition W amOrarnm of alhall knd olkAllnri
arth metials bysituelnum "oluthmn of cipefrolylen rt
Ix- ;re~- /5,7- /'/S'Y
typical electrochemical procese. The proerim 14'*rnno -
position of arnalitams consists of two Intermnimeted efrefro.
chemical reactions. The first reRctl(m in ih6 loMullon of
The metal dissolved In Up Me " Mv'~ 4 e. Thn xeco"d re-
action Is the discharge of 11 ~ in meld rmltd 10m, 11,04 k e
NjO 4 W, or In alkaline solution, H00:1 r'-- oil- 4 11, Ex.
pressloms for the potentials of decsn"~ Mon and tho rq.
action kinetics of the amalgam In meld npd aWlime molu-
ileas are derive& 0A.R.)
-7

IDSCOKPOSMO" WA ME AND OVXRVOLTAGN
bir waglaMom wactrity itt ALKAu

.
4 niaa.".351.10(11161~ 11P.AARC-0-11111
' U was proved that the decomposition of amalgams
by water mixtures 4 electrolytes In An electro.
diluted

M
chavalcal rez4ftlon limited by the speed, of Uto th dischar
go.
Decorwaltion kinelles for amalgams of Ko Lt. and Ca were
1 , studied is solutions of their hydroxides, and kinetic lormulits,
trochernicat theor
dedeced theoreticall
fro
the ele
of
m
t
y
y
i
ti
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1
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iven
6
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lue f
r
.
1
oces
a
c
es,
re g
o
e pr
F
g
Mg o-~4rvoltags on a 11C -cathode In alkaline solution was
found. The dependence of the amount of overvoltage on the
concentration of hydroxyl ions can be expressed as q
1.507~4.165 log CCM-. The Influence ofourtace -active

an t14 overvolet a of it, is dlscussed~ 11S.P.)
Ion

UM/Chemistry,- "rroitage Sep 52
"Thin Effect of Surface-Active Agents on th;_- Xinetics
of the Discharge of EWrogen Ions at the Mercury Blec-
trode," N. V. Nikolayeva, A..N. Frumkin, and Z.. A.
lof a, Moscow State 1U
Zhur Piz rhim, Vol 26, No 9, pp 1326-1336
Investigated effect of sol surface-active agents
(7tnAyl ale, =Wl ale, hexyl ald I .. I
., heptyl ale, caproic
acid)-and the effect of insol 2ong-dhain compds (cetyl
ale,, pa3zitic aqid, and nyristic acid) on the i-
tude of the R overvoltage at an Rg cathode -in HIC1,
HBr, and W04 of 2 1-'20 3 conans. The surface-acti"
263T24
agents increase the H orvervoItage at the Hg electroda
if the value of the ed and the magnitude of the over-
voltage increase do, not. exce.ed a. certain limii:t- WIth
t1h ~x
_Ancre
increim-se of overvoltage and the range of poteno*-;:
tials in vhicb an effect on the H overvoltage is. ob-,_1
The -ivaereate -L= a7ervultage-accurr4d ~'odl:~ at
-go' teatial vherc the mols of the 8u~ace-_a'c*t'1v4_,
Agents were adsorbed. The effect of the org substances
investigated on the mu=ltude of overvoltage was detd.
by the reduction in the rate of H ion discharge.
263T24

jl~
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19
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IOFA 0 2. A. Prof
"Concerning the Mechanism of Action of Inhibitors of tho Acid Corrosion 4f
Iron and Concerning the Role of Halogen Ions In This Procesti,," a paper giwo
at the All-University Scientific Conference "Lomonosov Lectares". Vent. Nook$
Un., No.8. 1953*

Z. A. lofit ami G. H.
91. d, CA. 44., 18NIJ,
il-378c.-The mdsjcptim if of peavd. rc 42j. dtict.
of a Sala - of I IV ICIS04
f O~ Both radiciactim isotovOs =4 pntar~travlflci
Apitlysis werc uwd. The rdsmtioo iocr"wd; With im-
~ma%- in cl:c camt. uf thso.- - Th~s expralax,the ffftcc 4.4
ctatk, (im. cit.). rht zd!~mtiuck "aid (roui;l
Rovt Lrach._

p z . o~ ,

;A1 1
Ra-11 7: i, -
~J RI

ili~~: Lit,!
jff
it na
31
47
I'A

7
P IF, i Cq F I Elt I P I A f 4 L5 -VItIA I

Y7~

SOV/1 37- 59- 3 - 7133
Translation from: Referativnyy zhurnal. Metallurgiya, 1959, Ur 3, p 314 USSR)
AUTHOR- Iofa, Z. A
TITLE: On the Mechanism of the Action of Surface- active Substances in
Electrochemical Reactions and Corrosion Processes (0 mekhanizme
deystviya poverkhnostno-aktivnykh veshchestv na elektrokhimiches-
kiye reaktsii i korrozionnyye protsessy)
PERIODICAL: Sb- Kom-t po korrozii i zashchite metallov Vses. sov. nau : chno-
tekhn. o-v, 1957, Nr 2, pp 26-35
ABSTRACT: Adsorption 'of surface-active substances on, a metal surface (5) with
potentials differing from those of the zero charge depends on the
sign and the magnitude of its charge. Organic cati.ons are adsorbed
on a positively charged S and cause the appearance of the positive
%Pj potential. Electrochemical reactions are slowed down either by
rendering the metal S "water repellent" or by introduction of large
molecules and organic ions into the duplex layer, thus decreasing its
field strength. The specific action of haloidjons is associated with
their chemical sorption on the metal S and a consequent change in the
Card 1/2 sign of the charge. HS' and S03 Z+ ions intensify the corrosion of Fe

SOV/137-59-3-7133
On the Mechanism of the Action of Surface-active Substances
and increase the protective action of cation inhibitors in acid solutions. The action.
of thiourea is also based on the formation of HS- during the decomposition :of the
former in the solution. Bibliography: 19 referentes.
SIG.

IOFA, Z.A., professor.
The fourth conference on electrochemistry. Vest.Hook.un. 12 no.13'
202-205 157.

IOIA, Z.A*q, MTN, A.N.; WNICHINKO, E.A.
3ffect of the nature of cations on the rate of,hirdroten
separation from alkaline.solutions.[with summaryfin Inglish].
Zhvr.fix.khim,. 31 no*9:2042-2051 S 157. 11: 1)
1.Moskoveidy goo
)~darstv*=W universitst is. N.Y. lomorkosovao
(Cations (Hydrogen) (Solution (Chemistry))

T6-'10-10/34
.AUTHORSe Iofa, Z.A.v Besproskurnov, G.G.
TITLEs A Study of the Mechanism of the Atmospheric Corrosion of Iron
in the Presence of Sulphur Dioxide as Aggressive Agent (19sle-
dovaniye mekhanizma atmosfernoy korrozii zheleza v prisutst4ii
sernistogo gaza kak agressora)
PERIODICAL3 Zhurnal Fizioheskoy Xhimii, 1957# Vol- 31, Nr,10, pp..2236.-1'2244
(USSR)
ABSTRACTo The corrosion of iron in an atmosphere contining sulphu'T' di-
oxide is Investigated* It is shown that the Initial volooity
of the corrosion increases with the increase.' of ooncesit'ration
at aulphur dioxide in air. A decrease of humidity rediides'-the
corrosion velocity and the corrosion stops praotioallli at a
relative humidity of lose than 65 - 70 ~- It in shown that4fter
25 - 30 hours the corrosion forms a rust layer in humid air
which retards this process& the greater the concentration of the
sulphur dioxide in air is, the thicker is the rust la;ror which
is formed during this time, It is shown that the corrDii.on:
which began in a completely pure humid air is continued, how-
Card 1/3 ever, with lower velocity. The rust analysis carried out by meam
76-1010/34.
A Study of the Mechanism of the Atmospheric Corrosion of Iron in the P:r
of Sulphur Dioxide as Aggressive Agent
of the radioactive sulphur isotope showed that inoantafriosphere
without oxygen (hydrogen and nitrogen) the ratio f he equi-
valent of sulphur to iron in the rust approaches to 0,33 &nd
almost does not change with the corrogion time. The ratio is
reduced with the time in the presence of oxygen. Conclusions
are drawn on the process in the case Of a corrosion in, the at-
mosphere in the presence d sulphur dioxida, The oorr6sion
takes place according to the electro'cbemical procelsi under
the humidity layer at the surface of the iron* The i!Fulphuric
acid produced in the case of a dissolution Of S02 in this lay-
er (cover) is the oxidizing agent which depolarizes the cathode
reaction and is restored up to the sulphide ions. Through the
o=rring negative Y -potential the oulphide ions also Stimu-
into the anode reactiInj The depolarizatiOn takes place in air
by the oxygen of the cathode process and tile oxidation of the
bivalent iron to a trivalent one ApyarentlY the syllphide iOnS
catalyze the last reaction* There are 7 figures, 4 tables$ 16
Slavic references.
Card 2/3
76-io--10/34
A Study of the Mechanism of the Atmospheric corrosion f Iron in tho Presence
of Sulphur Dioxide as Aggressive Agent
ASSOCIATIONs XoqOOW State University imeni M.y. Lomonosov
(Moskovskiy easudarstvannyy universitai imeni H,V. Lomonosova)
SUBMITTED# July 11P 1956
AVAILABLE$ library of Congress
Card 3/3
JAI-

AUTHORS: Nikiforova, M. M-p and lofa, . Z. Aw 2o-6-22/48
TITLE: Pass1vation and De-Passivation of a Lead Anado 411 Concentrated
Perebloric-$ Fluoboric- and Fluor-Silicic Acids (Passivat3iya i
depassivatsiya svintsovogo anoda v kontsentrirovannykh kremnefto-
ristavodorodnoy, khlornoy i borofboristovodorodnoy kislotakb).
PERIODICAL: Doklady AN SSSR) 1957) Vol- 115) Nr 6j, pp. n3"34 (USSR.).
ABSTRACT: Investigations of the electrochemical system PbO /acid/Pb with
electrolytes from the acid1s described in the tiM and from sildc.on.
fluor-bydracic were recently.described in p0licationso Such elem
ments act at low temperatures and in high discharge eurrentia. The
behavior of the lead anode and the conditions: leading to its ~essi-
vation in the mentioned acift were never thorou&Mar studied. In an
acid of a given concentration and at constant ta6perature the lead
anode remains active and little polarizes) provided that the.anodic
current density (ia) does not exceed a certain critical value (i)cr)
which is independent of a number of factors. Experiments showed that
the period of time after whose expiration the anode is passivated
(tp,) depends on the current-density chosen. This period of tilfie in
Card -115 (in a t varying from some seconds to 1)5 hours) with a good apptro-
p
20-6-
Fasalvation and De-Passivation of a Lead Anode in Concentrak,k_-d r,.irchloric-,
Fluorboric- and Fluor-Micic Acids.
Rination determined by the equation., lg t P w A - B Ig i A, where A
And B are constants, The decrease in temperature in all cases. re-
duces the ia - value at which the 'anode is within the same period
of time passivated, In strong reductions of concentration of the
acid this current density markedly-increases. In H 2 SiF 6 lead is most
easily passivated. In HC10 4 and in HW4 lead is passIvated at
t) _2o0C and at i,< lo ma. / off,*. Figure I shows a typical variation
curve of the potential in the course of time in anode-lead,-Passi-
vations in 7.0 N H 2SiF 6 at 'a ' 4o ma / cm~ and at t - -IAwithout
stirring. At first the, potential suddenly increases due to the riew
sistance of the salt-layer from PbOj whereas the current decreases
front 4o to 5 ma / cma. Then the Passage of, current is made: possible
due tothe FbO2-formation in the pores, since this salt posisessss a
good electric conductivity, Therefore the potential decreases and
the current again increases to its initialvalui:. Jh* pasadvating
Card 2/5 FbO 2-layer, however, soon spreads over the entire surface of the
Passivattion and De-Passivation of a Lead Anode in Concentrated 20-6-22/48
Perchloric., Fluorboric., and Fluor-Silicic Acids.
alectrodes-and the layer of lead.;.salt without supply. rapid[4 dissolm
ves in the acid, Then a potential stabilizes which corrospondsi to the
oxygen - overload on PW 2 at a given i a