Interaction of components in the RbI-CsI-CuI quasi-ternary system

Abstract

Differential thermal and X-ray powder diffraction analyses were used for studying phase equilibria in the polythermal sections RbCu2I3-CsCu2I3, CsCu2I3-Rb2CuI3, Rb2CuI3-Cs3Cu2I5, and Cs3Cu2I5-RbI of the RbI-CsI-CuI quasi-ternary system. For the first time, the nature of the physicochemical interaction in the RbI-CsI-CuI quasi-ternary system was investigated, an isothermal section at 473 K was constructed, and the boundaries of the formation of solid solutions based on ternary iodides were determined. No formation of new intermediate compounds in the quasi-ternary system was detected.