本文用X射线分析和差热分析方法测定了Er≤50at.-％区域内的Er-Ge二元系相图。在此成分区域内观察到三种化合物:ErGe_2,Er_2Ge_3和ErGe。在Ge和ErGe_2之间有一个共晶反应,共晶点成分是23at.-％Er,共晶温度是866℃。有两个包晶反应:在900℃形成化合物ErGe_2,在1043℃形成化合物Er_2Ge_3。差热分析表明,ErGe_2在886℃时,发生多型性变化。没有观察到Er在Ge里的固溶度。
Studies of the region≤50 at.-％ Er in the phase diagram of binary Er-Ge system were determined by X-ray diffraction analysis and DTA. Three compounds: ErGe_2, Er_2Ge_3 and ErGe were observed in this region. A eutectic reaction composed of 23 at.-％ Er occurs at 866℃. ErGe_2 and Er_2Ge_3 are formed by two peritectic reactions at 900 and 1043℃ respectively. DTA indicated that ErGe_2 undergoes a polymorphic transformation at 886℃. There is no detectable solubility of Er in Ge.
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