Interactions in the Sn2Sb6S11–PbSnSb4S8 system

Abstract

The Sn₂Sb₆S₁₁–PbSnSb₄S₈ system was studied by physicochemical analysis methods (differential thermal, X-ray powder diffraction, and microstructural analyses and microhardness and density measurements). It was found that this system is a quasi-binary section of the SnS–PbS–Sb₂S₃ ternary system of the eutectic type. The coordinates of the eutectic are 42 mol % PbSnSb₄S₈ and 600 K. In the studied system, regions of solid solutions were detected, which extend for solid solutions based on Sn₂Sb₆S₁₁ to 4 mol % PbSnSb₄S₈ (α) and for solid solutions based on PbSnSb₄S₈ to 6 mol % Sn₂Sb₆S₁₁ (β).