YCl_3-AECl_2(AE=Mg,Ca,Sr,Ba)二元相图的研究

金属学报, 1996, 32(2): 139-143.

YCl_3-AECl_2(AE=Mg,Ca,Sr,Ba)二元相图的研究

北京科技大学

北京有色金属研究总院

基金项目: 国家自然科学基金

关键词：稀土氯化物 , phase diagram , thermodynamics , molten salt

A STUDY ON THE YCl_3-AECl_2(AE=Mg, Ca, Sr, Ba)BINARY PHASE DIAGRAMS

YUAN Wenxia , MA Shulan , QIAO Hin , ZHUANG Weidong , XING Xianran , QIAO Zhiyu (University of Science and Technology Beijing

Keywords： : rare earth chloride , 相图 , 热力学 , 熔盐

用差热分析法测定了ＹＣｌ_３一ＳｒＣｌ_２体系二元相图，并用Ｘ时线衍射法验证了该二元体系中新相的生成。使用ＣＡＬＰＨＡＤ技术评估和优化了ＹＣｌ_３一ＡＥＣｌ_２（ＡＥ＝Ｍｇ，Ｃａ，Ｓｒ，Ｂａ）系列四个二元相图和热力学性质，取得了热力学性质和相图自相一致的结果。

Phase diagram of YCl3-SrCl2 binary system has been measured by means of DTA method, and a new phase in this system was observed by X-ray diffraction. The phase diagrams and thermodynamic properties of the YCl3-AECl2(AE=Mg, Ca, Sr, Ba) systems have been assessed and optimized by using CALPHAD technique. The optimized phase diagrams are consistent with thermodynamical data. (Correspondent: QIAO Zhiyu, professor, Department of Physical Chemistry, University of Science and Technology Beijing, Beijing 100083)

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