The Phase-Diagrams of M(2)X-Six(2) (M Is Cu, Ag, X Is S, Se)

Venkatraman M; Blachnik R; Schlieper A

Thermochimica Acta, Vol.249, 13-20, 1995

DOI10.1016/0040-6031(95)90666-5 Export Citation

The Phase-Diagrams of M(2)X-Six(2) (M Is Cu, Ag, X Is S, Se)

The phase diagrams of Cu2S-SiS2, Ag2S-SiS2 and Ag2Se-SiSe2 were investigated by DTA and X-ray methods. The system Cu2S-SiS2 contains two compounds : Cu2SiS3 and Cu8SiS6. The compound Cu6Si2S7 does not exist. The phase diagram of Ag2S-SiS2 is characterized by the presence of two ternary compounds : Ag8SiS6 and Ag10Si3S11. The Ag2Se-SiSe2 system contains only Ag8SiSe6, which forms a eutectic on either side. The stability range and the X-ray diffraction data of the compounds are presented.