THE PHASE DIAGRAM OF THE SYSTEM TL-TE-I IN THE COMPOSITIONAL RANGE OF TL2TEI6–TEI4-I
The paper presents the results of study of phase equilibria in the Tl-Te-I system in Tl2TeI6–TeI4-I composition area by methods of differential thermal and X-ray analyses. T-x diagrams of boundary quasi-binary systems, one internal polythermal section, as well as, the projection of the liquidus surface of the phase diagram were constructed. It was shown, that all boundary systems are of simple eutectic type, and the system Tl2TeI6-TeI4-I is characterized by ternary eutectics. Three fields of primary crystallization (TеI4, Tl2TeI6 and I2) were outlined on the liquidus surface, types and coordinates of non- and monovariant eutectic equilibria were determined.