Optimization and Calculation of TbCl_3-ACl (A = Li, Na, K, Rb, Cs) Phase Diagrams

摘要

By using CALPHAD (Calculation of Phase Diagram) technique the optimization and calculation of the bina systems of TbCl_3-ACl (A = Li, Na, K, Rb, Cs) were earned out. For describing the Gibbs free energy of liquid phase these systems the new modified quasichemical model in the pair-approximation for short-range ordering was used. Fro measured phase equilibria data and experimental integral properties the TbCl_3-ACl phase diagrams were optimized and calculated. A set of thermodynamic functions was optimized based on an interactive computer-assisted analysis. The calculated phase diagrams and thermodynamic data are self-consistent.