Thermodynamic Assessment of DyCl3-MCl (M=Na, K, Rb, Cs) Systems
来源期刊：JOURNAL OF RARE EARTHS2007年第1期
论文作者：Li Jun Yuan Shunxiang Sun Yimin Qiao Zhiyu Ma Zhisen Meng Xiangzhen
Key words：phase diagram; modified quasi-chemical mode; thermodynamic functions; rare earths;
Abstract: Using the CALPHAD (Calculation of Phase Diagram) technique, the DyCl3-MCl (M=Na, K, Rb, Cs) systems were optimized and calculated. The modified quasi-chemical model in the pair approximation for short-range ordering was used to describe the Gibbs energies of the liquid phase in these systems. From the measured phase diagram data and experimental thermodynamic properties, a series of thermodynamic functions were optimized base on an interactive computer-assisted analysis. The optimized parameters and the experimental data were thermodynamically self-consistent. The optimized results were discussed.
Li Jun1，Yuan Shunxiang1，Sun Yimin1，Qiao Zhiyu2，Ma Zhisen1，Meng Xiangzhen1
(1.Institute of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, China;
2.Department of Physical Chemistry, University of Science and Technology Beijing, Beijing 100083, China)
Abstract:Using the CALPHAD (Calculation of Phase Diagram) technique, the DyCl3-MCl (M=Na, K, Rb, Cs) systems were optimized and calculated. The modified quasi-chemical model in the pair approximation for short-range ordering was used to describe the Gibbs energies of the liquid phase in these systems. From the measured phase diagram data and experimental thermodynamic properties, a series of thermodynamic functions were optimized base on an interactive computer-assisted analysis. The optimized parameters and the experimental data were thermodynamically self-consistent. The optimized results were discussed.
Key words:phase diagram; modified quasi-chemical mode; thermodynamic functions; rare earths;
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