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本文用X射线粉末照相法和差热分析法测定了Gd-Cu二元系合金相图,发现GdCu6在735℃发生同素异构转变。此合金系中共存在着四种金属互化物,即GdCu,GdCu2,GdCu5和GdCu6,金属互化物GdCu,在932℃同成份熔化;而GdCu,GdCu2和GdCu6分别在759℃,870℃和884℃由包晶反应形成,存在两个共晶反应,分别发生在32at%Cu668℃和92at%Cu875℃,无论是Gd在Cu中或是Cu在Gd中都没有可觉察的固溶度。The gadolinium-copper phase diagram has been compicted by X-ray diffraction and differential thermal analysis. The allotropic change in the GdCu6 phase was observed at 735℃.In this system there exist four intermetallic Compouds: GdCu, GdCu2, GdCu5 and GdCu6. The intermetallic compound GdCu5 melts congruently at 932℃. The intermetallic compounds GdCu, GdCu2 and GdCu6 are formed by peritectic reactions at 759℃, 870℃ and 884℃, respectively. Two eutectic reactions occur: at 32 at% Cu and 668℃, 92 at% Cu and 875℃. Neither Gd in Cu nor Cu in Gd Shows any detectable solid solubility.
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