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稀土与碱金属卤化物相图的研究早有报道。近年来开展对低价稀土与碱金属卤络合物及该类体系相图的研究,将有助于新络合物和新相的发现,为寻找新材料提供依据。本文研究了YbI_2-CsI体系在2·10~(-6)乇下的等压相图。YbI_2在实验室内合成,化学分析纯度为99.7％,X射线相分析为纯相,熔点为779℃。CsI(A.R.)经高真空干燥处理,熔点为626℃。YbI_2-CsI体系的样品制备方法和条件见文献[4],共制备了38个组分的样品,每个约重120毫克。用差热分析仪测定了每个样品的升降温曲线,并对温度数据做
The rare earth and alkali metal halide phase diagram of the study has long been reported. In recent years, research on low-valent rare earth and alkali metal halide complexes and phase diagrams of these systems will be helpful for the discovery of new complexes and new facies and provide the basis for finding new materials. In this paper, the isobaric phase diagram of YbI_2-CsI system at 2 · 10 -6 Torr was studied. YbI_2 was synthesized in the laboratory with a chemical analysis of 99.7% purity and X-ray phase analysis of pure phase with a melting point of 779 ° C. CsI (A.R.) was dried under high vacuum and had a melting point of 626 ° C. The sample preparation methods and conditions of YbI_2-CsI system are described in [4]. A total of 38 samples were prepared, each weighing about 120 mg. The differential thermal analyzer was used to measure the temperature rise and fall curve for each sample and to do the temperature data