常用二元熔盐氯化物相图及其热力学性质的最优化

The Optimization of Thermodynamic Properties and Phase Diagrams of Some Binary Chloride Systems

摘要: 本文介绍了一种优化处理二元相图及热力学性质的方法。通过系统分析全部所获得的LiCl—KCl,LiCl—SrCl₂,NaCl—SrCl₂,NaCl—CaCl₂,NaCl—BaCl₂,KCl—BaCl₂,CaCl₂—BaCl₂,BaCl₂—SrCl₂等八个二元系热力学性质和相图的数据并进行优化处理,取得了热力学性质和相图自相一致的结果。

Abstract: A method based on least squares regression analysis has been proposed for the optimization of available thermodynamic properties and phase diagrams of binary systems.By using of this method, the excess entropy of binary system can be predicted from the phase diagram. Eight binary chloride systems were chosen for the study. LiCl-KCl, NaCl-SrCh, NaCl-CaCl₂, NaCl-BaCl₂, KCl-BaCl₂, CaCl₂-BaCl₂, BaCl₂-SrCl₂. The thermodynamic properties, which were expressed in mathematical form by critical analysis of all available phase diagrams and thermodynamic data, of all phases in the above binary systems have been obtained.In the same time, the phase diagram and other thermodynamic data can be critically assessed in a thermodynam.ically self-consistent manner.