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用差热分析法、X射线衍射法和金相显微镜观察法研究了Gd-In二元系合金相图,实验证实了有六个中间相:Gd3In,Gd2In,Gd5In3,Gdln,Gd2In3和Gdln3,有五个共晶转变,分别与～12at％In(共晶温度988℃),～30.5at％In(1151℃),～38.5at％In(1114℃),～64.5at％In(1010℃)以及100at％A phase diagram of the alloys of the gadolinium-indium binary system was studied by differential thermal analysis, X-ray diffraction method and microscopic observation. The following six intermediate phases were verified: Gd3In,Gd2In,Gd5In3,Gdln,Gd2In3 and Gdln3. There are five eutectic transformations corresponding respectively to about 12 at % In (eutectic temperature 988℃), 30.5 at % In (1151℃), 38.5 at % In (1114℃), 64.5 at % In (1010℃). The eutectic on the In-rich side is degenerate. The decomposing temperature of the compound Gd2In3 formed by peritectie reaction is Tper= 1107℃. The periteetoid reaction 2Gd2+GdIn←→Gd5In3 occurs at 1071℃. Neither In in Gd nor Gd in In shows any detectable solid solubility.
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