The Cu₂S–Cu₇PS₆–Cu₆PS₅I quasiternary system

Chem. Met. Alloys 6 (2013) 183-187

https://doi.org/10.30970/cma6.0262

A.I. Pogodin, I.E. Barchiy, A.P. Kokhan

The Cu₂S–Cu₇PS₆–Cu₆PS₅I quasiternary system was investigated by differential thermal analysis and X-ray diffraction in combination with mathematical modeling. The phase diagram of the Cu₇PS₆–Cu₆PS₅I system, perspective views of the phase interactions in the ternary system, and a projection of the liquidus surface were constructed. New complex compounds do not form. The ternary system is of the invariant eutectic type and characterized by the formation of limited solid solutions. The three-dimensional one-, two- and three-phase regions present in the Cu₂S–Cu₇PS₆–Cu₆PS₅I system are described.

Perspective view of the Cu₂S–Cu₇PS₆–Cu₆PS₅I quasiternary system

Keywords

Phase diagram / Thermal analysis / X-ray diffraction / Superionic conductors