THE SOLUBILITY OF CHEMICAL ELEMENTS IN CHROMIUM

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP82-00047R000400660001-3
• Release Decision: RIPPUB
• Original Classification: C
• Document Page Count: 3
• Document Creation Date: December 22, 2016
• Document Release Date: June 17, 2009
• Sequence Number: 1
• Publication Date: August 27, 1954
• Content Type: REPORT

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CENTRAL INTELLIGENCE AGENCY
INFORMATION REPORT
COUNTRY USSR DATE DISTR. -17 R 06 /RS 44
25X1
SUBJECT The Solubility of Chemical Elements in NO. OF PAGES
Chromium
PLACE
ACQUIRE
DATE
ACQUIRE
DATE OF
THIS ODCYYtNT CONTAIN{ I410N11:1:111 RFFLCTINt TN[ NATI01%.1, D[R[N t[
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AND 7041 OF TNt U.S. COD[. A{ AMENDED. ITS TRAN.YI{LION OR RLT[.
LATION OF ITS CONTENT{ TO OR Ri C[1!T 11, AN YNAYTNORI[[O PERSON It
FRONI[IT[D OT LAN. TNL REPRODUCTION or THIS FORM It FRONI{IT[D.
NO. OF ENCLS.
(LISTED BELOW)
SUPPLEMENT TO
REPORT NO.
THIS IS UNEVALUATED INFORMATION
1. Izvestiya Academii Nauk SSSR, Otdeleniye Khimichnii Nauk, 1953, No 6,
Page 980. "The Solubility of Chemical Elements in Chromium" by I I
Kornilow. -
a. "Research on chromium alloys is of great significance since these alloys
have wide use in industry. More possibilities for their use will be
found in the future."
b. Purely theoretical argumentation and practical experiments enabled
the author to arrive at the following conclusions.
(1)"Solbilities of the elements in chromium showed analogical ranges
.to the solubilities of said elements in others such as iron,
nickel, copper, etc.
(2)"Creation of hard chromium, alloys with other elements or the
impossibilities of such, is based entirely on the Mendelyeev
periodic law.
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(3)"Thanks t the aforementioned there are rear '! possibilities ;
..foresee'~tYer or not various elements will combine with chromium
or hard alloys.
(1)"Conclusions conseeQO V O?J. 'crystallographic laws lead to
..the same possibilities of determining whether or not the afore-
mentioned elementSwill be suitable as componentsof hard alloys
with chromium.
(5)"The;can" be drawn that chromium,tay be combined as a.
...continuous alloy with.titanium (high temperature modification),
with vanadium, molybdenum, and wolfiamium,'b.ut only asa non con-
tinuous alloy with beryllium, boron, zirconium,,,,,U-njd*; uranium,
rhenium, and with all elements belonging'to.the VIII group (iron
and platinum group) excluding Iron-A of an isomorpl2ic structure
with chromium.' With this kind.of iron chromium can be combined
as a continuous alloy.
(6)"1 e'tailio elements, members of the first and second groups possessing
..basic qualities which are separated cpnsiderably from chromium
(-excluding only beryllium) and:which''-a~ry"a great deal from chromium
insofar as atomic diameters are concerned,,are unable to combine
with chromium alloys either as liquids or as solids.
(7)"T contemplation of solubility of various elements with chromium'
:strengthens the possibilities of creating more coolicated, triple,
quadruple., etc. solid hard solutions,
(8)"Particulars concerning the -solubility,ofthe elements in chromium
..such as double, triple, quadruple, etc. enable determining the
possibilities of obtaining more or less simple compositions of
chromium alloys based on continuous or'discontinuous hard solutions
of chromium. .
(9)"Definite findings related to.: the solubility of various elements in
_ 'oatiu lead.to,.the problems of alloys strictly related to the
chromium elements, namely, molybdenum' and wolframium. Some laws
proved by prepared chromium alloys should be confirmed in practice
by successful alloys based on molybdenum and wolframium."
ci Comment and l7valuation
(1).In general use of chromium, particularly in the manufacture of
steel products, requiresmany ferrous and non ferrous alloys. Stain-
.less steel is essentially a ferro-chrome alloy. In the chemical
industry the alloy generally consists of iron and.13 percent
chromium.
MAn electronic theory for the development of passivity in a chromium
iron?Alloy states that an electron in the "S" level of the iron
migrates to the available "D" level which can accomodate five
ereetrons of the chromium atom, and that this adjustment:is the
source of the passivity or norr-attack by acid. The theory permits
an estimation of the amount of alloying element the iron alloy
should have, and the estimate agrees closely with the alloys used
in practice.
the im lications are much greater than the conclusions
w i-c they state, their work in iron-chromium alloys is
done in *oonnection wit requirements that the Soviet State may have
served on the chemical industry of that country. the
exDerimcr.t ' are essentially concerned with develop ng a st ur y material 25X1
will resist hydrochloric and hydrofluoric acid.
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Soviet industry is se g. a .suitable mate'r`ial
which irill-eliminate corrosion The general tone of"the article
would indicate that the industries concerned with the-development
of a preventative for corrosion are:
(a) Those industries concerned with substitution of Ealoid materials
(b) The dye industry.
(c)
?eutical =industry
(5) The processes employed in the `above ejperiments are by and large .
. standard procedures and a e- welt known to chemi:41s who deal. with
..
corrosion*
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