Interaction in the Systems TlBiSe2-Tl9BiSe6-PbSe and Tl9BiSe6-Tl4PbSe3-PbSe

摘要

Phase equilibria in the systems TlBiSe2-Tl9BiSe6-PbSe and Tl9BiSe6-Tl4PbSe3-PbSe were studied by differential thermal, X-ray powder diffraction, and microstructural analyses. State diagrams of the quasi-binary sections Tl9BiSe6-Tl4PbSe3, TlBiSe2-PbSe, and Tl9BiSe6-PbSe were constructed, and so were projections of liquidus surfaces and isothermal sections at 600 K for the secondary quasi-ternary systems TlBiSe2-Tl9BiSe6-PbSe and Tl4PbSe3-Tl9BiSe6-PbSe. The coordinates of invariant points and the boundaries of solid solutions were determined.