Optimization and calculation of the NdCl3–MCl (M=Li, Na, K, Rb, Cs) phase diagrams

The binary phase diagrams of the NdCl3–MCl (M=Li, Na, K, Rb, Cs) systems were studied using the CALPHAD technique. For describing the Gibbs energies of the liquid phase in these systems, the new modified quasi-chemical model in the pair-approximation for short-range ordering was used. Based on measured phase equilibrium data and experimental thermochemical properties, a set of thermodynamic functions has been optimized using an interactive computer-assisted analysis, which was applied to calculate the self-consistent thermodynamic phase diagrams.