PHASE EQUILIBRIA AND HIGH-ENTROPY ALLOYS IN THE Cu6GeSe6 – Ag6GeS6 SYSTEM

Мұқаба

Дәйексөз келтіру

Толық мәтін

Ашық рұқсат Ашық рұқсат
Рұқсат жабық Рұқсат берілді
Рұқсат жабық Тек жазылушылар үшін

Аннотация

Compounds of the argyrodite family and the phases based on them are of interest as environmentally friendly functional materials. This work presents new data on phase equilibria in the Cu6GeSe6 – Ag6GeS6 system obtained by differential thermal analysis and X- ray powder diffraction studies. It was established that the system is not quasi- binary due to the incongruent melting of Cu6GeSe6 yet it maintains thermodynamic stability below the solidus temperature. A continuous series of solid solutions (δ- phase) with both cationic and anionic substitutions was identified between the high- temperature modifications. Limited homogeneity regions were determined based on the low- temperature modifications. The formation of solid solutions lowers the temperatures of polymorphic transitions and expands the homogeneity range of the ion- conducting cubic δ- phase down to room temperature and below. At room temperature, the homogeneity range of the δ- phase spans 10- 70 mol. % Ag6GeS6. The δ- phase within the composition range of 36- 64 mol. % Ag6GeS6 can be classified as a high- entropy alloy, which opens additional prospects for tailoring its properties through entropy- driven structural stabilization.

Авторлар туралы

A. Poladova

Institute of Catalysis and Inorganic Chemistry

I. Huseynova

Institute of Catalysis and Inorganic Chemistry

Baku, Azerbaijan

I. Alverdiyev

Ganja State University

Baku, Azerbaijan

V. Gasymov

Institute of Catalysis and Inorganic Chemistry

Baku, Azerbaijan

L. Mashadiyeva

Institute of Catalysis and Inorganic Chemistry

Baku, Azerbaijan

M. Babanly

Institute of Catalysis and Inorganic Chemistry; Azerbaijan State University of Economics; Baku State University

Email: babanlymb@gmail.com
Baku, Azerbaijan; Baku, Azerbaijan; Baku, Azerbaijan

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