Thermodynamic Optimization of TmCl3-ACl (A=Na, K, Rb, Cs) Phase Diagrams
来源期刊：JOURNAL OF RARE EARTHS2005年第1期
论文作者：Wang Yu Tan Junjun Sun Yimin Zhang Jing Ye Xinyu
Key words：modified quasichemical model; thermodynamic optimization; phase diagram; thermodynamic properties; rare earths;
Abstract: From the measured phase equilibria data and experimental thermochemical properties, the TmCl3-ACl (A=Na, K, Rb, Cs) phase diagrams were optimized and calculated using the CALPHAD technique. For describing the Gibbs energies of the liquid phase in these systems, the new modified quasichemical model in the pair-approximation for short-range ordering was used. A set of thermodynamic functions was optimized and gotten based on an interactive computer-assisted analysis. The calculated phase diagrams and thermodynamic data are self-consistent.
Wang Yu1，Tan Junjun1，Sun Yimin1，Zhang Jing1，Ye Xinyu1
(1.Institute of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, China)
Abstract:From the measured phase equilibria data and experimental thermochemical properties, the TmCl3-ACl (A=Na, K, Rb, Cs) phase diagrams were optimized and calculated using the CALPHAD technique. For describing the Gibbs energies of the liquid phase in these systems, the new modified quasichemical model in the pair-approximation for short-range ordering was used. A set of thermodynamic functions was optimized and gotten based on an interactive computer-assisted analysis. The calculated phase diagrams and thermodynamic data are self-consistent.
Key words:modified quasichemical model; thermodynamic optimization; phase diagram; thermodynamic properties; rare earths;
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