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用差热分析法研究了Licl-Bacl_2-Srcl_2三元系及三个侧边二元系的相图。研究表明Licl-Bacl_2和Licl-Srcl_2二元系是两个低共晶体系,其共晶点E_1和E_2对应的温度分别为526℃和489℃。Bacl_2-Srcl_2二元系是具有最低温度点的连续固溶体。Licl-Bacl_2-Srcl_2三元相图中通过E_1和E_2及温度最低点E的二次析出线将三元系分为两个一次结晶面:Licl的一次结晶面和Bacl_2-Srcl_2固溶体的一次结晶面。该三元系的最低熔化温度是482℃,仅略低于Licl-Srcl_2二元系的共晶温度;三元系温度最低点E的组成为58.4mol％Licl,15.8mol％Bacl_2和25.8mol％Srcl_2。
Differential thermal analysis was used to study the phase diagram of Licl-Bacl_2-Srcl_2 ternary system and three lateral binary systems. The results show that Licl-Bacl_2 and Licl-Srcl_2 binary systems are two low eutectic systems. The corresponding temperatures of E 1 and E 2 are 526 ℃ and 489 ℃, respectively. Bacl_2-Srcl_2 binary system is the continuous solid solution with the lowest temperature point. The ternary system of Licl-Bacl_2-Srcl_2 ternary phase diagram is divided into two primary crystallization planes by the secondary precipitation line of E_1 and E_2 and the lowest temperature E: the primary crystal plane of Licl and the primary crystal plane of Bacl_2-Srcl_2 solid solution . The lowest melting temperature of the ternary system is 482 ℃, only slightly lower than the eutectic temperature of Licl-Srcl_2 binary system; the composition of the ternary system temperature lowest point E is 58.4mol% Licl, 15.8mol% Bacl_2 and 25.8mol% Srcl_2.