EuCl_3-CaCl_2二元系的热力学优化和计算  

Thermodynamic Optimization and Calculation of the EuCl_3-CaCl_2 Binary System

作　　者：孙益民[1] 马芝森[1] 叶信宇[1] 王玉[1] 乔芝郁[2] 麻孝勇[1] 

机构地区：[1]安徽师范大学化学与材料科学学院,安徽芜湖241000 [2]北京科技大学物理化学系,北京100083

出　　处：《安徽师范大学学报（自然科学版）》2006年第1期45-48,51,共5页Journal of Anhui Normal University(Natural Science)

基　　金：安徽省教育厅重点项目(2005KJ016ZD)

摘　　要：引入短程有序—扩展似化学模型来描述EuCl3-CaCl2二元体系液相的Gibbs自由能,根据实验测定的相图和混合焓数据,运用CALPHAD技术对该体系进行了热力学优化和计算,优化计算的结果和实测值符合很好.In this paper, the Gibbs energy of liquid phases in the EuCl3 - CaCl2 system was described by the new modified quasi-chemical model in the pair approximation for local order. Based on measured phase equilibrium data and experimental enthalpies of mixing of the binary system, a set of thermodynamic functions have been optimized by using the CALPHAD technique. The calculations show good agreement with experimental phase diagrams and thermodynamic values.

关 键 词：短程有序-扩展似化学模型 EuCl3-CaCl2 相图 优化计算 

分 类 号：O641.3[理学—物理化学]