| AN ISOBAR-ISOTHERMAL PHASE DIAGRAM OF THE Nd-Fe-B SYSTEM AT ATMOSPHERIC PRESSURE AND 1000℃ |
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| 引用本文： | 郝士明,徐维.AN ISOBAR-ISOTHERMAL PHASE DIAGRAM OF THE Nd-Fe-B SYSTEM AT ATMOSPHERIC PRESSURE AND 1000℃[J].中国稀土学报(英文版),1990(3). |
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| 作者姓名： | 郝士明 徐维 |
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| 作者单位： | Northeast University of Technology Shenyang 110006，China，Northeast University of Technology，Shenyang 110006，China |
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| 摘 要： | An isothermal section of Nd-Fe-B system at 1000℃ and the phase equilibrium relationship in Fe-Ndand Nd-B binary systems were investigated with diffusion couple by means of metallographic observation,electron microprobe analysis and X-ray diffraction.It was shown that there are three stable ternary com-pounds,Nd_2Fe_(14)B,Nd_2Fe_7B_6 and Nd_9Fe_3B_8 in Nd-Fe-B system at 1000℃.None of these phases has solu-bility,that is,they are exactly stoichiometric phases.On the other hand,there exist rather wide two-phaseregions between Nd_2Fe_7B_6 and liquid as well as between Nd_9Fe_3B_8 and liquid.It was identified that there isno NdFe_2 compound in the system under atmospheric pressure.
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