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本文用X射线衍射、差热分析及金相分析方法测定了Sm-Ni二元系合金相图。在此二元系中观察到8个金属间化合物:Sm3Ni(664℃分解),SmNi(熔点为1079℃),SmNi2(1034℃分解),SmNi3(1135℃分解),Sm2Ni7(1220℃分解),SmNi4(1282℃分解),SmNi5(熔点为1430℃)和Sm2Ni17(1288℃分解)。发生三个共晶反应:Sm3Ni-SmNi(570℃,～32at%Ni),SmNi-SmNi2(809℃,53.5at%Ni)和Sm2Ni17-Ni(1280℃,94at%Ni)。无论是Sm在Ni中或是Ni在Sm中,均未观察到明显的固溶度。The samarium-nickel binary system has been studied by X-ray diffraction, differential thermal and metallographic analyses. The phase diagram has been determined. In the system the following eight intermetallie compounds were observed: Sm3Ni(decomposes at 664℃), SmNi (M. P. 1079℃), SmNi2 (decomposes at 1034℃), SmNi,(decomposes at 1135℃), Sm2Ni7 (decomposes at 122℃), SmNi4 (decomposes at1282℃), SmNi5 (M. P. 143℃), and Sm2Ni17 (decomposes at 1288℃). Three eutec-tics occur: Sm,Ni-SmNi (570℃,～32 at%Ni), SmNi-SmNi2 (809℃, 53.5 at%Ni) andSm2Ni17-Ni (128℃, 94 at%Ni). Neither Sm in Ni nor Ni in Sm shows any detectablesolid solubility.
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中国物理学会期刊
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