Phase equilibrium of TlPrSe2-TlPr2Se4 system, investigation of physico - chemical properties of the phases formed

Alloys of the TlPrSe2-TlPr2Se4 system were investigated, physicochemical studies were carried out using the methods of differential thermal analysis (DTA), X-ray phase analysis (XRD), microstructural analysis (MSA), as well as measurements of density and microhardness, a phase diagram was constructed. It has been established that the TlPrSe2-TlPr2Se4 system is a partial quasi-binary region of the Pr2Se3-Tl2Se-TlSe quasi-ternary system. According to the results of microstructural analysis, the area of the solid solution based on the components in the system was studied at room temperature, and the area of the solid solution based on the peritectic compound TlPrSe2 was practically not determined, where the TlPr2Se4 compound had a solid solution area of 10 mol.%.