SOLID-PHASE EQUILIBRIA IN THE RECIPROCAL SYSTEM 6Ag2S+Ag8SnSe66Ag2Se+Ag8SnS6

Solid-state equilibria at 800 and 300 K in the 6Ag2S+Ag8SnSe66Ag2Sе+Ag8SnS6 system which is of interest from the point of view of obtaining new mixed ion-electron conductors were studied by DTA, XRD and SEM methods. According to the results obtained it was shown that the system is reversibly reciprocal and is characterized by the formation of continuous (800 K) or wide (300 K) regions of substitutional solid solutions along the boundary systems Ag2S–Ag2Sе and Ag8SnS6–Ag8SnSe6