摘要
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)。
The phase diagram of ternary system NdCl3-SrCl2-NaCl has been investigated fay meams of DTA and X-ray diffraction analysis. It was found that there were 4 surfa- ces corresponding to the primary crystallization of NdCl3, SrCl2,, NaCl and Sr3NdCl9. respectively; and 5 univariant lines releted to the secondary crystallization in this system. The temperature of theternary entectic, composed of 77.0wt:%NdCl,, 22.0 wt. %NaCl and 1.0 wt. %SrCl2, was determined to be 432℃, The temperature of the ternary peritectic, composed of 75.0 wt. %NdCl3, 20.6 wt. %NaCl and 4,4 wt. % SrCl,, was observed to be 491℃. A compound, formed in the solid state, was found. The X-ray diffraction data of the new phase was obtained. The temperature of decomposition occures at 420℃.
出处
《北京大学学报（自然科学版）》
CAS
CSCD
北大核心
1989年第6期658-663,共6页
Acta Scientiarum Naturalium Universitatis Pekinensis
基金
国家自然科学基金
