【摘要】 研究了在ＮｄＦｅＢ磁体晶间添加Ｗ，Ｍｏ或Ｎｂ等合金元素对显微组织和磁性能的影响。结果表明，适量的Ｗ，Ｍｏ或Ｎｂ能不同程度提高ＮｄＦｅＢ磁体的矫顽力，对剩磁影响不大。显微组织分析表明，矫顽力的提高可归因于晶间ＴＦｅＢ（Ｔ＝Ｗ，Ｍｏ或Ｎｂ）新相的出现。进一步分析表明，晶间微合金化能够有效改善ＮｄＦｅＢ磁体组织与性能。更多还原

【Abstract】 The alloying elements W, Mo and Nb were added into the intergranular regions of sintered FeNdBbased magnets and their effects on microstructures and magnetic properties were investigated. Results showed that an appropriate amount of W, Mo and Nb additives could enhance the coercivity and had little effect on the remanence of the magnets. The variation of the coercivity was attributed to the occurrence of a new intergranular TFeB(T=W, Mo or Nb) phase. A further analysis revealed that microalloying of the intergranular region is a promising way to improve the properties of FeNdBbased magnets.更多还原