EuCl_3-BaCl_2二元系相图的研究

Phase Diagram of Binary System EuCl_3-BaCl_2

利用差热分析法研究了EuC l3-B aC l2二元系相图,发现该体系有一个固液同组成化合物3EuC l3.2B aC l2,体系相变点为950℃,EuC l360%(摩尔分数);一个异份熔化化合物2EuC l3.3B aC l2,转熔点为630℃,EuC l343.6%(摩尔分数);2个低共熔点分别为320℃,EuC l351%(摩尔分数)和330℃,EuC l379%(摩尔分数)。同时探讨了相图的某些规律。

Phase diagram of binary system EuCl3-BaCl2 was determined by DTA. It was obtained that a congruent compound 3EuCl3·2BaCl2,melting point at 950℃ ,containing EuCl3 60%（in mole percent）; an incongruent compound 2EuCl3 · 3BaCl2 ,a peritectic point at 630℃ ,containing EuCl3 43.60% （in mole percent） and two eutectic points at 320℃ ,containing EuCl3 51% （in mole percent） and 330℃ ,containing EuCl3 79% （in mole percent） in the EuCl3- BaCl2 system. Some rules of the phase diagram were also explored.