【摘 要】
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In the literature reported Ce-Ge phase diagram, the sharp change of the liquidus near the non-stoichiometric compound (CeGe) looks very unusual, leading to the motivation for the experimental measurem
【机 构】
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School of Materials Science and Engineering,University of Science and Technology Beijing, Beijing 10
【出 处】
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第十七届全国相图学术会议暨相图与材料设计国际研讨会
论文部分内容阅读
In the literature reported Ce-Ge phase diagram, the sharp change of the liquidus near the non-stoichiometric compound (CeGe) looks very unusual, leading to the motivation for the experimental measurements of the present work.The as-cast solidified microstructures of the Ce-Ge alloys between 40-60 at.% Ge are measured by XRD, SEM and EPMA in order to verify some of the invariant reactions of the Ce-Ge system.The experiments show that the compound (CeGe) melts congruently;the compound Ce5Ge4 is formed by the invariant peritectic reaction L+Ce5Ge3→CesGe4 and the microstructures of two eutectic reactions L→CesGe4+(CeGe) and L→(CeGe)+(βCeGe1.7) are observed.According to the present investigation, some phase equilibrium relations of the Ce-Ge phase diagram are modified.
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