PrCl_3-SrCl_2-NaCl三元体系相图的研究  

An Investigation on the Phase Diagram of Ternary System PrCl_3-SrCl_2-NaCl

作　　者：郑朝贵[1] 王晓临[1] 柴良 乔芝郁[2] 叶于浦[1] 

机构地区：[1]北京大学化学系 [2]北京科技大学理化系

出　　处：《高等学校化学学报》1989年第12期1173-1176,共4页Chemical Journal of Chinese Universities

摘　　要：借助于DTA和X射线结构分析研究了PrCl_3-SrCl_2-NaCl三元体系相图,发现本体系内有对应于PrCl_3、SrCl_2、NaCl和Sr_3PrCl_9的4个液相面、5条二次结晶线、1个三元低共熔点E(PrCl_3 68.1,SrCl_2 1.1,NaCl 30.8 wt％;465℃)和三元转熔点P(PrCl_3 65.0,SrCl_2 7.0,NaCl 28.0 wt％;515℃).同时发现有1个固相下形成的不稳定化合物Y(在440℃分解).The phase diagram of ternary systerm PrCl3-SrCl2-NaCl has been investigated by means of DTA and X-ray diffraction analysis. It was found that there are 4 fields corresponding to the primary crystallization of PrCl3, SrCl2, NaCl and Sr3PrCl9 respectively and 5 univarant lines related to the secondary crystallization in this system. The two reactions occured in this system are:A compound, formed in the solid state ,was found, and it decomposes at 440℃.

关 键 词：PrCl3 SrCl2 NACL 三元系 相图 

分 类 号：O614.334[理学—无机化学]