PrCl_3-SrCl_2MgCl_2三元体系相图的研究  

Phase Diagram of Ternary System PrCl_3-SrCl_2-MgCl_2

作　　者：郑朝贵[1] 郑燕珂 

机构地区：[1]北京大学化学系,北京100871

出　　处：《化学学报》1994年第12期1155-1158,共4页Acta Chimica Sinica

基　　金：国家自然科学基金资助的项目.

摘　　要：借助于DTA研究了PrCl_3.-SrCl_2.-MgCl_2.三元体系相图.发现本体系内有对应于PrCl_3,SrCl_2,MgCl_2.和Sr_3PrCl_9.的四个液相面、五条两次结晶线、一个三元低共熔点E(25.0wt%PrCl_3,41.5wt%SrCl_2,33.5wt%MgCl_2;538℃)和三元转熔点P(23.0wt%PrCl_3,43.5wt%SrCl_2,33.5wt%MgCl_2;544℃).体系内有两个四相平衡反应为:The phase diagram of ternary system PrCl3-SrCl2-MgCl2 has been investigated by means of DTA. Four surfaces corresponding to the primary crystallization of PrCl3, SrCl2, MgCl2 and Sr3PrCl9 respectively, five univariant lines related to the secondary crystallization, ternary eutectic point E (25.0wt% PrCl3, 41.5wt% SrCl2, 33.5wt% MgCl2; 538℃) and ternary peritectic point P (23.0wt% PrCl3, 43.5wt% SrCl2, 33.5wt% MgCl2; 544℃) were found. The two reactions occured in the system are:L PrCl3+Sr3PrCl9+MgCl2 L+SrCl2 Sr3PrCl9+MgCl2

关 键 词：氯化镨 氧化锶 氯化镁 相图 三元体系 

分 类 号：O645.4[理学—物理化学]