The paper presents the results of a study of phase equilibria in the 6Ag₂Se+Ag₈SiTe₆« 6Ag₂Te+Ag₈SiSe₆ reciprocal system by DTA and XRD methods. The projection of the liquidus surface, isothermal sections at 300, 500, 1150 K, and some polythermal sections of the phase diagram are constructed. It is shown that the system is reversible-reciprocal. It is characterized by the formation of continuous high-temperature solid solutions along the Ag₈SiSe₆-Ag₈SiTe₆ (d) and Ag₂Se-Ag₂Te (a) boundary systems. It has been established that the liquidus surface of the reciprocal system consists of two fields of primary crystallization a- and d-phases. These surfaces are delimited by a eutectic curve with monovariant equilibrium L«a+d. In the subsolidus part of the system, a complex interaction is observed associated with the polymorphism of the initial compounds and phases based on them

doi.org/10.32737/0005-2531-2023-3-6-17