SCIENTIFIC ABSTRACT DEMBOVSKIY, S.A. - DEMCHENKO, A.V.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R000510010009-5
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: March 13, 2001
• Sequence Number: 9
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

ACCESSION NR: AP4012445 S/0078/64/009/002/0389/0393
AUTHOR: Dembovskly, S. A.
TITLE: Crystallization of glasses in the Se-Aa2Se3 system
4
SOURCE: Zhurnal neorg. khim., v. 9, no. 2, 1964, 389-393
TOPIC TAGS: selenium arsenic trinlanide qstemp selenium -arsenic phase
diagram, chalkogeni& system, crystallization, vitreous phase, selenium arseitic
-triseknide . eutectic
ABSTRACT: The Se-As2Se3 system was studied by differential thermal and
x-ray analyses to establish approximately the eutectic chwactw of the phasedbWaz%
(see Figl of the Emlosum).2m usua'kcryst&llo-op&al and polythermal methods are not
suitable for studies of chalkogenide systems because of the poor crystallizability.:
volatility,and opaqueness of the glaasea. In "the Se-As2Se3 system there exists
an area, from 15 As, 80 at. % SO where
-23 ati fe As, near the eutectic (20. at.
the glasses do not crystallize, -the crystallization becoming more difficult and
1/3

ACCESSION NR: AP4012445
finally Impossible as the eutectic to approached. The existence of a stable
vitreous phase having the eutectic composition is explained on the ba'sis of
differences in the crystallizability and softening temperatures of the compmaits Se
and AsS% and the mechanism of cryst&UizatLaaof duawgenids glasses under condi-
tions of considerable viscosity. "I thank N. P. Luzhna and V. K: Nikitina for
assistance in the work." Orig. art. has: 4 figures
ASSOCIATION: None
SU13MITTED: 11Jan63
SUB CODE: W9 HT
ATD PRESS: 3046
ENCL: 01
NO REF SOV: 007
OTHER: 000

ACCESSION NR: AP4012445 SUCLOSUR&S 01

Joe -
XLso -I* Phase diagram of tho
so-An2sel system'
JAV. I - liqui .due line of the

% :ystem, 2 - dependence
.:;'-A
*
2S:
com-
Of
ening teup.) oft
;
'
out- the
Position of,glasses of

too. So-A62S*3 3 - dependence
:ystem#
'
T#Am f c
o Tog oi Upoiltion of anne
aled
t out glasson of the*$*-As So systems
2 3

S v is f a jo A ~4 0
'A* %AS
3/3

ACCESSION NR: AP4019489 S/0078/64/009/003/0660/0664
AUTHOR: Dernbovskiy, S. A.; Luzhnaya, N. P.
TITLE: Phase diagram of the As-Se system
SOURCE: Zhurnal neorg. khimii, v. 9, no. 3, 1964, 660-664
,rOPIC TAGS: arse nic selenium system, phase diagram, x ray analysis, differ-
ential thermal analysis, As sub 2 Be sub 3, AsSe, As sub 2 Be sub 3-AsSe sys-
tem, AsSe-As system, Se-As sub 2 Be sub 3 system
ABSTRACT: The phase diagram of the As-Se system was studied by differential
thermal and x-ray phase analysis (fig. 1). The melts in the glass-forming area
(from Be to about 60 at. %As) were crystallized beforehand by prolonged anneal-
ing. Two compounds were found in the system: As2Se3, known before, and
AsSe, detected by systematic investigation. As2Se3 has a sharp maximum, and
that of AsSe Is leveled. The area of first crystallization of As2Se 3 is in a wide
-range of compositions from 20-47 at. % As; for AsSe the range is narrow, from
colq

ACCESSION NR: AP4019489
47-55 at. 76 As. Individual diagrams of the compositions Se-As2se3, As2Se3-,
has*4
.'.sSe, and AsSe-As have eutectic characteristics. Orig. art.
figures.
ASSOCIATION: None
SUBMITTED: 01Jul63 DATE ACQ: 31Mar64 ENCL: 0 1
OTHER: 000
SUB CODE: ML, PH NO REF SOV: 005

1) e&6~wc(W~6,,( -T/80(t -w3 P!4~ I
Mum
NR; Apwo644o B/oo5i/65/018100310505105(k
A
AUMORI. Zorina, Ye-',Z.; DeA646-kirs 9. A*
TITLE: Infrared dba Lon-16f aisenic monodelenide ;A
SOUPCE.- OptiM I spektrbtkx~piypi v. 18V no- 3. 1965, 505-508
md.:,'Infkaked 'ab *ption, absorption coefficient.. re-
TOPIC 'ZAGS: arsenio'co6p6t go,
flection coefficient
fe pni ~,,wtetttial -field
The., infiakeif ~0 -of Alzsi-~Iike-AsSe was investigated ini'the-,
A sorp:_ion
wavelength region .0*6T, 25 P Pie procedure for synthesizing the compound, is d
scribed. Vea~kurements -were, mimde of the:absorption and reflection coefficie&.3 as
functions of th6 hotob; energy_kdr direct. transitions. The transmission satisfies
the relation T ~C`Vldiewe T - traximdasion,, R - reflection, ~R - ibsorp-!
R)2
tion coefficient, =4 x - sample thickness. The obsorption coefficient decreased I
from 4ag carl at o.865 p to 0.46 aarl at lo-41 tx,, while the reflection coefficient-
changed from 0-33 at 0.792 to 0..22 at 1.872 p and then renalned constant up to
10 P. fro Indirect transition via dbaerved In the substance. The results are In-
1/2

L 43866-,~-65
ACM; XOK-Vlf~r
terpreted oIa-the basis of them theorr of the behavior of fermions in the field of - i
a random potential, and it in concLuded that the field is isatropic and that the
fermian energy has In this f:ie]A & quadratic dzpendence on the mcmentum. "The
aixt1mrs thank A. Be Almzov to! cKtical renarks and a discussion." Orig. art.
has: 4 figures and I tablee

L 0011KOF(e) IEWP (t IJPW
ACCESSION NR: AP5018247 UR/0079/65/oio/m/1657/1659
54-161.6+546.289*231
AUTHOR: Dembovskiy, S. A.; Vino rmdova.-G. Z.; PAshinkin, A. S.
TITLE;: CMatallization of glasses in the Q&-fg_ sygtem
ISOURCE: Zhumal ne.organich"k6i uAilaft v. 10, no. 7, 1965, 1657-1659
ATOPIC TAGS, + -,-selenit= germanlutw system, --glass --crystallization; phase diagram, glass.
A6
formation, germanium diselen
ABSTRAM The rt of the Se.-Ge:6ystem~in the 75 to 100 at% Se composition
rang e has been, studied b3r. DTA :and x-ray structural analysis to refine
the region of glass formation In the phase diagram previously studied (Liu Ch'~n-
Rua, A. S. Pashinkin, and A. V. Movoselava. Dokl. AN SSSR, 146, 1092, 1962) and to
correlate the crystallizability of glasses in this region with the corresponding
phase diagram., Class samples were syntheoized by a known method M G. Ayo, V. F.
Kokoriaa. Optiko-mekh-promyshlonnost', no. 4, 39, 1961) and heat treated at 160 to
180C for 400 hr, Partial Mattalization occurred in all heat-treated glasses.
The degree of crystallization depended on the composition of the glasses. The min-
imum crystallization, i.e., the maximum content of the glass, was observed visually_
T-.
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T. 2!z41 46 1 -
ACC NRt Px SOURCE CODE: UR/0363/65/dOl/"Oll/1889111891
AUTHOR: Zorina, Ye. DembovskiX. Velichkova, V. B.'; Vinog ad va
S.
X im. N. S. Kurnakov, Academy o
ORG: Insti tute of General and Inorganic Chemistr MY 0 f
.:Sc.iencesjSSSR auk SSSR)
-'Institut obahchey i neorganicheskoy khimii Akademii n
TITLE: A- :ZcLred absorption of As2Se3, As2Se5, and AsSe4 in the glassy state
SOURCE', 1869-
AN. SSSR. Izvestiya. Neorganicheskiye materialy, v. 1, no. 11, 1965,
1891
TOPIC TAGS: arsenic, ~elenide~jlassy state, TR spectrum, absorption spectrum
ABSTRACT: -A study has been made of the IR absorption of glassy As2Se3 Vb~AiSieS and
2
AsSeOn the 0.67--25 V region with the IKS-14 spectrophotometer. The absorption
spectra of the above seloni&-s in the glassy state were shown to have a weak 15.6 11
bind, which was ascribed to impurities, and a strong 20.9 p band, due to selenium. In
addition, AsSe4 has a 12. 7 p band, due. to AS203. No fundamental absorption bands were
observed in~ the region studied. The absorption and reflection coefficients, and the
refractive indexes,at the edge absorption band for glassy As2Se3, As2Se5,and AeSe4
were determined.. Orig. aM has: 1 figure and 1 table. JEO]
SUB CODE: IC/- SUBH DATE: 22Jun65/ ORIG REF: 009/ OTH REF: 003/ ATD PRESS:*/q/
uDc: 546.19,23:543.42?-.4
I Card
V

0 XWP(6)/HWP - ---- -
Cc NRt AP5027940 SOURCEXODE! UR/0363/651001/010/183811844
ARMOR: Vinogradova, 0. Z-:; Dembov
ORG: Inotitute of General and inorganic Chemistrv imL
N-. S. Kurnakov, AN SSSR
(Institut obshchey,i neorganicheskoy khimii AN SSSR)
TITLE: The region of glass formatiod in the S-As system r-
SOURCE: AN SSSR. Izvestiya. Neorganicbeskiye materialy, v. 1, no. 10, 1965,
~1838-1844
TOPIC TAGS: glass.product, arsenic compound, sulfur co7ound, crystallization
As, purified from oxides, and hi ty S were use
ABSTRACT: d in this work as
initial materials. Glasses containing 6.3-35 at% As were synthesized from
As2S3 and Sin quartz ampules evacuated to < 10-SHg, under the following optimal
conditions:.heating for 2 hours to~300C.; holTing for 2 hours; heating for 2 hours t(
.500C; and holding for 120 hours with mixing by rotation of the furnace,(mixing was
nece,ssary because of a very slow reaction of-As.9 with S). A shorter holding time
(