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EuCl₃-KCl二元系相图

Phase diagram of binary system EuCl₃-KCl

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【Author】 ZHANG Jun-qing 1, LIU Zhong-xing 2 (1. Department of Biological and Chemical Engineering, Baotou University of Iron and Steel Technology Baotou, Baotou 014010, China; 2.Institute of Metallurgical Engineering, Baotou University of Iron and Steel

【机构】包头钢铁学院生物与化学工程系；包头钢铁学院冶金工程研究所包头014010；包头014010；

【摘要】利用差热分析法研究了EuCl3 KCl二元系相图 ,发现该体系有两个固液同组成化合物EuCl3 ·3KCl和2EuCl3 ·KCl,体系相变点分别为 76 5℃ ,EuCl3 2 5 %(摩尔分数 )和 5 5 5℃ ,EuCl3 6 6 .7%(摩尔分数 ) ;一个异分熔化化合物EuCl3 ·2KCl,转熔点为 5 6 4℃ ,EuCl3 42 %(摩尔分数 ) ;3个低共熔点分别为 6 5 0℃ ,EuCl3 12 %(摩尔分数 ) ,5 0 0℃ ,EuCl3 5 5 %(摩尔分数 )和 490℃ ,EuCl3 85 %(摩尔分数 )。同时探讨了相图的某些规律。更多还原

【Abstract】 The phase diagram of binary system EuCl 3-KCl is investigated by DTA. In the EuCl 3·KCl system the milting points of the two congruent compounds EuCl 3·3KCl and 2EuCl 3·KCl are 765?℃ with EuCl 3 25%(mole fraction) and 555?℃ with EuCl 3 66.7% respectively, a peritectic point of the incongruent compound EuCl 3·2KCl is 564?℃ with EuCl 3 42% and three eutectic points are 650?℃ with EuCl 3 12%, 500?℃ with EuCl 3 55% and 490?℃ with EuCl 3 85% respectively. Some rules of the phase diagram are also explored.更多还原