利用高温X射线和透射电镜分析研究了Ti-Ni-Ce合金中富稀土相的形貌及晶体结构,发现稀土Ce在Ti-Ni合金中以正交结构的CeNi金属间化合物的形式存在.应用Miedema生成热模型对CeNi相的形成机理进行分析,结果表明Ce元素与Ni元素的亲和力远大于其与Ti之间的亲和力,因此,Ti-Ni-Ce合金中的富Ce相以CeNi的形式存在是必然的.
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