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化学学报
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化学学报 ›› 1994, Vol. 52 ›› Issue (12): 1155-1158. 上一篇    下一篇

研究论文

PrCI~3-SrCI~2-MgCI~2三元体系相图的研究

郑朝贵;郑燕珂   

  1. 北京大学化学系
  • 发布日期:1994-12-15

Phase diagram of ternary system PrCI~3-SrCI~2-MgCi~2

ZHENG CHAOGUI;ZHENG YANKE   

  • Published:1994-12-15

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借组于DTA研究了PrCI~3-SrCI~2-MgCI~2三元体系相图,发现本体系内有对应于PrCI~3,SrCI~2,MgCI~2和SrCI~9的四个液面,五条两次结晶线,一个三元低共熔点E(25.0wt%PrCI~3,41.5wt%SrCI~2,33.5wt%MgCi~2, 538 ℃) 和三元转熔点P( 23.0wt%PrCI~3,43.5wt%SrCI~2,33.5wt%MGCI~2,544℃)体系内有两个四相平衡反应为:L=PrCI~3+MgCI~2+Sr~3PrCi~9L+SrCi~2=MgCi~2+Sr~3PrCi~9

关键词: 三元体系, 稀土金属络合物, 差热分析, 氯化镁, 熔盐, 相图, 氯化锶, 氯化镨

The phase diagram of the title ternary system was investigated by means of DTA. Four surfaces corresponding to the primary crystallization of PrCl3, SrCl2, MgCl2 and SrPrCl9 resp., five univariant lines related to the secondary crystallization, ternary eutectic point E (25.0 wt% PrCl3, 41.5 wt% SrCl2, 33.5 wt% MgCl2, 538癈) and ternary peritectic point P (23.0 wt% PrCl3, 43.5 wt% SrCl2, 33.5 wt% MgCl2; 544癈) were found.

Key words: TERNARY SYSTEM, RARE EARTH METAL COMPLEX, DIFFERENTIAL THERMAL ANALYSIS, MAGNESIUM CHLORIDE, FUSED SALTS, PHASE DIAGRAM, STRONTRIUM CHLORIDE, PRASEODYMIUM CHLORIDE

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