Abstract
Phase equilibria in the PbTe-AgSbTe2 section of the quasiternary Ag2Te-PbTe-Sb2Te3 system were studied by means of differential-thermal and X-ray analyses, as well as microhardness measurements. For investigations, two series of alloys of the explored section were prepared by two different ways. Based on the experimental data, the T-x diagram of the PbTe-AgSbTe2 section was constructed. It found that a wide area (30-100 mol% PbTe) of solid solutions based on lead telluride was formed in the system. A characteristic feature of this system is a large temperature range (up to 150 °) of crystallization (melting) of solid solutions which leads to strong segregation and heterogeneity of solid solutions.