高等学校化学学报 ›› 1994, Vol. 15 ›› Issue (4): 478.

• 论文 • 上一篇    下一篇

LaCl3-SrCl2-MgCl2三元体系相图

郑朝贵, 郑燕珂   

  1. 北京大学化学系, 北京, 100871
  • 收稿日期:1993-07-05 修回日期:1993-11-05 出版日期:1994-04-24 发布日期:1994-04-24
  • 通讯作者: 郑朝贵,男,54岁,副教授.
  • 作者简介:郑朝贵,男,54岁,副教授.
  • 基金资助:

    国家自然科学基金

Phase Diagram of Ternary System LaCl3-SrCl2-MgCl2

ZHENG Chao-Gui, ZHENG Yan-Ke   

  1. Department of Chemistry, Peking University, Beijing, 100871
  • Received:1993-07-05 Revised:1993-11-05 Online:1994-04-24 Published:1994-04-24

摘要: 本文借助于DTA和X射线结构分析测定了LaCl3-SrCl2-MgCl2三元体系相图,发现它属简单低共熔型,体系内有对应于LaCl3、SrCl2和MgCl2的3个液相面、3条2次结晶线和1个三元低共熔点E(15.0wt%LaCl3,49.5wt%SrCl2,35.5wt%MgCl2;545℃),并且在固相下有一个不稳定的化合物生成,在约500℃时分解。

关键词: LaCl3, LaCl3-SrCl2-MgCl2三元体系, 相图

Abstract: Three surfaces corresponding to the primary crystallization of LaCl3 , SrCl2 and MgCl2, respectively, 3 univariant curves related to the secondary crystallization and a ternary eutectic (15.0wt% LaCl3,49.5wt% SrCl2, 35.5 wt% MgCl2; 545℃) were found in LaCl3-SrCl2-MgCl2 system by means of DTA and X-ray diffraction analysis, Areaction occurs in this system : L=LaCl3+ SrCl2+ MgCl2.An unstable compound has been found in the solid which decomposed at about 500℃.

Key words: LaCl3, LaCl3-SrCl2-MgCl2 ternary system, Phase diagram

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