Open AccessPHASE EQUILIBRIA IN THE Cu2Se–SnSE–Sb2Se3 SYSTEM
Author(s) -
E.N. Ismayilova,
L.F. Mashadiyeva,
I.B. Bakhtiyarly,
M.B. Babanly
Publication year - 2022
Publication title -
azərbaycan kimya jurnalı/azerbajčan himiâ žurnaly
Language(s) - English
Resource type - Journals
eISSN - 2522-1841
pISSN - 0005-2531
DOI - 10.32737/0005-2531-2022-1-73-82
Subject(s) - liquidus , phase diagram , isothermal process , phase (matter) , differential thermal analysis , ternary numeral system , materials science , thermodynamics , diffraction , crystallization , diagram , projection (relational algebra) , powder diffraction , crystallography , chemistry , optics , physics , mathematics , statistics , organic chemistry , algorithm
Phase equilibria in the Cu2Se–SnSe–Sb2Se3 quasi-ternary system has been studied by differential thermal analysis and powder X-ray diffraction. Some polythermal sections, isothermal sections at 300 K of the phase diagram and the projection of the liquidus surface are constructed. The regions of primary crystallization of phases, the nature and temperatures of non- and monovariant equilibria have been determined. The phase diagram of the SnSe–CuSbSe2 quasi-binary section has been refined. It was found that a quaternary compound CuSnSbSe3 is formed in the system by the peritectic reaction. This compound exists in a narrow range ~(650–723 K) temperatures. In addition, in the studied Cu2Se–SnSe–Sb2Se3 system, limited regions of solid solutions based on the SnSe, Sb2Se3, CuSbSe2 and SnSb2Se4 compounds have also been revealed