ErCl_3-CaCl_2体系的热力学优化和计算  

THERMODYNAMIC OPTIMIZATION AND CALCULATION OF THE ErCl3-CaCl2 SYSTEM

作　　者：孟祥珍[1] 孙益民[2] 

机构地区：[1]巢湖学院化学与材料科学系,安徽巢湖238000 [2]安徽师范大学化学与材料科学学院,安徽芜湖241000

出　　处：《巢湖学院学报》2011年第6期101-103,共3页Journal of Chaohu University

摘　　要：根据实验测定的相图,运用CALPHAD技术对ErCl3-CaCl2体系进行了热力学优化和计算.计算出的相图属于简单低共熔型,低共熔点为850.92K,46.0%(摩尔分数)ErCl3,同时优化计算了该体系的液相混合焓和相互作用系数.这些热力学参数对于稀土金属及其合金的冶炼有重要意义.From measured phase diagram, the system of ErCB-CaC12 was optimized and calculated by the CALPHAD approach. The calculated phase dliagram is eutectic and the eutectic point is 850.92K, 46.0% （mole fraction）ErC13. Enthalpy of mixing in liquid and interaction parameter of mixing enthalpy have been optimized and calculated in the system. These thermodynamic functions are important for fusion of rare-earth metal and their alloy.

关 键 词：ErCl3-CaCl2 优化和计算 相图 热力学 

分 类 号：O655[理学—分析化学]