PrCl_3-SrCl_2-LiCl三元体系相图的研究

本文借助于DTA与X射线结构分析研究了PrCl_3-SrCl_2-LiCl三元体系相图。发现:本体系内有对应于PrCl_3、SrCl_2、LiCl和Sr_3PrCl_9的四个液相面、五条二次结晶线,一个三元低共熔点E(68.5wt.％PrCl_3,1.5wt.％SrCl_2,30.0wt.％LiCl;440℃)和三元转熔点P(65.2wt.％PrCl_3,4.8wt.％SrCl_2,30.0wt.％LiCl;462℃)。同时发现有一个固相下形成的不稳定化合物Y(420℃分解)。

INVESTIGATION ON THE PHASE DIAGRAM OF TERNARY SYSTEM LaCl_3-SrCl_2-LiCl

Abstract: The phase diagram of ternary system LaCl3 - SrCl2 - LiCl has been investigated by means of DTA. It was found that there were three fields corresponding to primary crystallization of LaCl3, SrCl2 and LiCl respectively, three univeriant curves related to the secondary crystallization, a ternary eutectic E (46.8% LaCl3, 25.4% SrCl, 30.0% LiCl; 469℃) in the system. A ternary reaction occurred in the system:L = LaCl3 + SrCl2 + LiCl