scholarly journals ХАРАКТЕР ХИМИЧЕСКОЕ ВЗАИМОДЕЙСТВИЕ И СТЕКЛООБРАЗОВАНИЕ В СИСТЕМЕ AS2SE3-IN2TE3

2021 ◽  
Vol 7 (9(63)) ◽  
pp. 18-22
Author(s):  
ИМИР ИЛЬЯС АЛИЕВ ◽  
ДЖЕЙРАН АЛИ АХМЕДОВА ◽  
ЭЛЬШАН ТЕЙЙУБ КАХРАМАНОВ
Keyword(s):  
Phase Diagram ◽  
Reciprocal System ◽  
Glass Formation Region ◽  
Slow Cooling ◽  
Formation Region ◽  
X Ray ◽  
Tetragonal System ◽  
Binary Section ◽  
Quasi Binary Section ◽  
Ice Water

Mетодами дифференциально-термического (ДТА), рентгенофазового (РФА), микроструктурного (МСА) анализа, а также измерения микротвердости и плотности, исследована система As2Se3-In2Te3 и построена Т - х фазовая диаграмма. Система As2Sе3-In2Te3 является квазибинарным сечением тройной взаимной системы As,In//Sе,Te. Cоединение In2As2Se3Te3 кристаллизуется в тетрагональной сингонии с параметрами решетки: а =9,40; с =6,36 Å, плотность ρпикн.=5,36 г/см3, ρрент.=5,85 г/см3. В системе образуется одно инконгруэнтное соединение In2As2Sе3Te3,плавящееся при 620оС. Выявлено, что в системе твердые растворы на основе In2Te3 доходят до 3 мол. %, а на основе As2Sе3 практически не обнаружены. В системе при медленном охлаждении область стеклообразования на основе As2Sе3 доходит до 7 мол. % In2Te3, а в режиме закалки в ледяной воде около 12 мол. % In2Te3. By the methods of differential thermal (DTA), X-ray phase (XRD), microstructural (MSA) analysis, as well as measurements of microhardness and density, the As2Se3-In2Te3 system was investigated and the T-x phase diagram was constructed. The As2Sе3-In2Te3 system is a quasi-binary section of the ternary reciprocal system As, In // Se, Te. One incongruent compound In2As2Sе3Te3 is formed in the system, melting at 620оС. Compound In2As2Sе3Te3 crystallizes in the tetragonal system with lattice parameters: a = 9.40; с = 6.36 Å, density ρpycn. = 5.36 g/cm3, ρX-rey. = 5.85 g/cm3. It was found that in the system, solid solutions based on In2Te3 reach 3 mol. %, and practically not found on the basis of As2Sе3. In the system, upon slow cooling, the glass formation region based on As2Se3 reaches 7 mol. % In2Te3, and in the mode of quenching in ice water about 12 mol. % In2Te3.

Sur l'existence des composés P4Sex(x &([a-z]+); 3) et P4Se3−nSn(n = 1,2)

1974 ◽  
Vol 52 (12) ◽  
pp. 2190-2196 ◽  
Author(s):  
Yves Monteil ◽  
Henri Vincent
Keyword(s):  
Thermal Analysis ◽  
Phase Diagram ◽  
Binary Compound ◽  
Ternary Diagram ◽  
Heat Of Fusion ◽  
X Ray ◽  
X Ray Crystallography ◽  
Binary Section ◽  
Quasi Binary Section ◽  
Mixed Compound

The phase diagram of P(red) + P4Se3 was studied systematically by differential thermal analysis and X-ray crystallography. P4Se3, which is the sole binary compound in the system, exists as three allotropic forms: P4Se3α transforms at 82 °C into P4Se3β which is transformed at 192 °C into P4Se3γ; the β- and γ- forms were unknown. The heats of the allotropic transformations were evaluated as well as the heat of fusion of P4Se3.In the ternary diagram P–S–Se the isopleth P4Se3–P4S3 is a quasi-binary section. An eutectic is observed at 170 °C with a concentration of 5% in P4Se3. No mixed compound of the type P4Se3−nSn (n an integer = 1 or 2) was found during the study of this isopleth. [Journal translation]

ChemInform Abstract: The Ag2S-ZnS-GeS2 System: Phase Diagram, Glass-Formation Region and Crystal Structure of Ag2ZnGeS4.

ChemInform ◽  
2010 ◽  
Vol 41 (37) ◽  
pp. no-no
Author(s):  
O. V. Parasyuk ◽  
A. O. Fedorchuk ◽  
Yu. M. Kogut ◽  
L. V. Piskach ◽  
I. D. Olekseyuk
Keyword(s):  
Crystal Structure ◽  
Phase Diagram ◽  
Glass Formation ◽  
Glass Formation Region ◽  
Formation Region ◽  
System Phase Diagram ◽  
System Phase

scholarly journals Phase relations in the CuI-SbSI-SbI3 composition range of the Cu–Sb–S–I quaternary system

2021 ◽  
Vol 23 (2) ◽  
pp. 236-244
Author(s):  
Parvin R. Mammadli ◽  
Vagif A. Gasymov ◽  
Ganira B. Dashdiyeva ◽  
Dunya M. Babanly
Keyword(s):  
Quaternary System ◽  
Composition Range ◽  
Liquidus Surface ◽  
Polymorphic Transitions ◽  
X Ray ◽  
Immiscibility Region ◽  
Binary Section ◽  
Quasi Binary Section ◽  
Polythermal Sections ◽  
Primary Crystallisation

The phase equilibria in the Cu-Sb-S-I quaternary system were studied by differential thermal analysis and X-ray phase analysis methods in the CuI-SbSI-SbI3 concentration intervals. The boundary quasi-binary section CuI-SbSI, 2 internal polythermal sections of the phase diagram, as well as, the projection of the liquidus surface were constructed. Primary crystallisation areas of phases, types, and coordinates of non- and monovariant equilibria were determined. Limited areas of solid solutions based on the SbSI (b-phase) and high-temperature modifications of the CuI (α1- and α2- phases) were revealed in the system. The formation of the α1 and α2 phases is accompanied by a decrease in the temperatures of the polymorphic transitions of CuI and the establishment of metatectic (3750C) and eutectoid (2800C) reactions. It was also shown, that the system is characterised by the presence of a wide immiscibility region that covers a significant part of theliquidus surface of the CuI and SbSI based phases 

scholarly journals PHASE EQUILIBRIUM IN THE INAS2SE4 -INAS2SSE3 AND PROPERTIES OF THE FORMED PHASES

2021 ◽  
Vol 7 (8(62)) ◽  
pp. 38-42
Author(s):  
RUZGARA SEVIM MAGAMMADRAGIMOVA
Keyword(s):  
Phase Diagram ◽  
Phase Equilibrium ◽  
Solid Solutions ◽  
Room Temperature ◽  
Quaternary System ◽  
Lattice Parameters ◽  
Binary Section ◽  
Quasi Binary Section

The character of the interaction in the InAs2Se4 -InAs2SSe3 system was investigated and its phase diagram was constructed by DTA, XRD, MSA, as well as by measuring the microhardness and determining the density of the alloys. It was found that the InAs2Se4 -InAs2SSe3 section is a quasi-binary section of the In-As-S-Se quaternary system. Solid solutions based on InAs2Se4 at room temperature reach 10 mol % InAs2SSe3, and on the basis of InAs2SSe3 it extends to 15 mol % InAs2Se4. The lattice parameters are calculated from the region of solid solutions based on InAs2Se4 and InAs2SSe3.

The Ag2S–ZnS–GeS2 system: Phase diagram, glass-formation region and crystal structure of Ag2ZnGeS4

2010 ◽  
Vol 500 (1) ◽  
pp. 26-29 ◽  
Author(s):  
O.V. Parasyuk ◽  
A.O. Fedorchuk ◽  
Yu.M. Kogut ◽  
L.V. Piskach ◽  
I.D. Olekseyuk
Keyword(s):  
Crystal Structure ◽  
Phase Diagram ◽  
Glass Formation ◽  
Glass Formation Region ◽  
Formation Region ◽  
System Phase Diagram ◽  
System Phase

scholarly journals GLASS FORMATION IN TERNARY SYSTEM La2O3–As2S3–Pr6O11

2018 ◽  
Vol 61 (4-5) ◽  
pp. 43
Author(s):  
Ikhtiyarly B. Bakhtiyarly ◽  
Gulnar M. Fatullayeva ◽  
Orudg Sh. Kerimli
Keyword(s):  
Ternary System ◽  
Glass Formation ◽  
Inert Atmosphere ◽  
Glass Formation Region ◽  
Formation Region ◽  
Transparent Glass ◽  
X Ray ◽  
Coordination Numbers ◽  
Physical Chemical ◽  
Mineral Acids

Boundaries of glass formation in ternary system La2O3-As2S3-Pr6O11 were studied using methods of physical-chemical analysis (DTA, DTG, X-ray analysis, MSA). It was established that in glass formation region the range of concentration covers from As2S3-La2O3 15 mol%, but from As2S3-Pr6O11 it is 13 mol%. To our opinion the decrease in glass formation region of Pr6O11 comparing to La2O3 is related to crystalline structure of oxide, i.e. to the change in coordination number of lanthanides. Because properties of compounds of lanthanide are more sensitive to the change in coordination numbers relative to radii of ion. In the system the region of transparent glass formation is limited with the region of non-transparent one. The reason of non-transparency of a glass is the formation of primary centers of crystallization, which was confirmed by the results of X-ray analysis and SEM.  Raman spectra of transparent glass containing(La2O3)0.07(As2S3)0.90(Pr6O11)0.03 were studied. Intensity of bands which characterize the bonds of As–S, La–O, Pr–O in Raman spectrum and shift of energy of waves in the big party are related to the strengthening of bonds and probably, appearance of new bonds in glasses. When heating glasses of the composition (La2O3)0.07(As2S3)0.90(Pr6O11)0.03 in inert atmosphere (He) at 224,61 °С it softens which is followed by endoeffects. Observed exoeffect at 315,80 °С satisfies crystallization of glass, but at 380,80 °С thermal decomposition begins. Samples in the region of glass formation are stable at 300 K to air, water and organic solvents. When heated, glasses are dissolved in chromic mixture. They decompose in mineral acids and alkalies.Forcitation:Bakhtiyarly I.B., Fatullayeva G.M., Kerimli O.Sh. Glass formation in ternary system La2O3–As2S3–Pr6O11. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2018. V. 61. N 4-5. P. 43-48

scholarly journals STUDY OF THE CU3AS4TE9-CRASTE3 SECTION OF THE AS2Te3-Cr2Te3-CuTe quasi-ternary system

2021 ◽  
pp. 40-44
Author(s):  
S. Ismailova
Keyword(s):  
Phase Diagram ◽  
Solid Solution ◽  
Ternary System ◽  
Solid Solutions ◽  
Room Temperature ◽  
Physicochemical Analysis ◽  
Binary Section ◽  
Quasi Binary Section ◽  
Quasi Ternary System

Chemical interactions in the system were studied by methods of physicochemical analysis (DTA, XRD, MSA, determination of density and microhardness) and its phase diagram was constructed. It was found that the phase diagram of the system is a non-quasi-binary section of the quasi-ternary system As2Te3-Cr2Te3-CuTe. At room temperature in the system of solid solutions based on Cu3As4Te9 reaches - 5 mol. % CrAsTe3. The region of the solid solution based on the CrAsTe3 compound has not been established in practice. The dependence of the microhardness and density of alloys of the Cu3As4Te9-CrAsTe3 system on the composition has been investigated.

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