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Phase Equilibria in the Quasi-Ternary System Cu2Se-GeSe2-Sb2Se3
Journal of Phase Equilibria and Diffusion ( IF 1.5 ) Pub Date : 2020-10-19 , DOI: 10.1007/s11669-020-00840-2
I. A. Ivashchenko , T. A. Ostapyuk , I. D. Olekseyuk , O. F. Zmiy , O. M. Strok

The isothermal section of the quasi-ternary system Cu2Se-GeSe2-Sb2Se3 at 620 K (347 °C) and the liquidus surface projection of the system onto the concentration triangle have been built. The sections Cu2GeSe3-CuSbSe2 and Cu2GeSe3-Sb2Se3 are quasi-binary systems of the eutectic type. The eutectic point coordinates in the Cu2GeSe3-Sb2Se3 system are: 70 mol.% Sb2Se3-30 mol.% Cu2GeSe3, 780 K (507 °C). In the Cu2GeSe3-CuSbSe2 system the eutectic point coordinates are: 10 mol.% Cu2GeSe3-90 mol.% CuSbSe2, 750 K (477 °C). The liquidus surface projection is represented by the fields of the primary crystallization of Cu2Se (high-temperature modification), Cu8GeSe6 (high- and low-temperature modifications), Cu2GeSe3, GeSe2, Sb2Se3, CuSbSe2 and Cu3SbSe3 compounds. The fields are separated by 9 nonvariant points corresponding to the processes in the quasi-binary systems and 7 nonvariant points at the planes of the respective nonvariant processes in the quasi-ternary sub-systems Cu2Se-Cu2GeSe3-CuSbSe2, Cu2GeSe3-Sb2Se3-CuSbSe2, Cu2GeSe3-GeSe2-Sb2Se3. Solid solubility in binary and ternary compounds does not exceed 5 mol.%, no quaternary phases were found.

中文翻译:

准三元系统 Cu2Se-GeSe2-Sb2Se3 中的相平衡

已经建立了准三元系统 Cu2Se-GeSe2-Sb2Se3 在 620 K (347 °C) 下的等温截面和该系统在浓度三角形上的液相线表面投影。Cu2GeSe3-CuSbSe2和Cu2GeSe3-Sb2Se3截面是共晶类型的准二元系统。Cu2GeSe3-Sb2Se3 体系中的共晶点坐标为:70 mol.% Sb2Se3-30 mol.% Cu2GeSe3,780 K (507 °C)。在 Cu2GeSe3-CuSbSe2 系统中,共晶点坐标为:10 mol.% Cu2GeSe3-90 mol.% CuSbSe2,750 K (477 °C)。液相线表面投影由 Cu2Se(高温改性)、Cu8GeSe6(高温和低温改性)、Cu2GeSe3、GeSe2、Sb2Se3、CuSbSe2 和 Cu3SbSe3 化合物的初级结晶场表示。这些场由对应于准二元系统中的过程的 9 个不变点和准三元子系统 Cu2Se-Cu2GeSe3-CuSbSe2、Cu2GeSe3-Sb2Se3-CuSbSe2 中各个不变过程平面上的 7 个不变点分隔, Cu2GeSe3-GeSe2-Sb2Se3。在二元和三元化合物中的固溶度不超过 5 mol.%,未发现四元相。
更新日期:2020-10-19
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