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通过对不同温度淬火的Nd2Ni7和Nd1.5Mg0.5Ni7样品粉末进行X射线衍射分析(XRD)和扫描电子显微镜/能谱分析(SEM/EDS),研究了Nd1.5Mg0.5Ni7合金淬火后的相结构。结果表明,淬火后,Nd1.5Mg0.5Ni7三元合金主要由Ce2Ni7型相和Gd2Co7型相组成;淬火温度对合金主相晶格常数几乎没有影响;Mg的加入促进了低温相的形成,并减少了杂质相的生成。
The phase structure of Nd1.5Mg0.5Ni7 alloy after quenching was studied by X-ray diffraction (XRD) and scanning electron microscopy (SEM) / energy dispersive spectroscopy (SEM / EDS) on Nd2Ni7 and Nd1.5Mg0.5Ni7 samples hardened at different temperatures. . The results show that after quenching, the Nd1.5Mg0.5Ni7 ternary alloy mainly consists of Ce2Ni7 phase and Gd2Co7 phase; the quenching temperature has almost no effect on the lattice constant of the main phase of the alloy; the addition of Mg promotes the formation of the low temperature phase and decreases The formation of impurity phase.