(西安交通大學(xué)材料科學(xué)與工程學(xué)院， 西安710049)
摘 要: 研究了在 NdFeB 磁體晶間添加W, Mo或Nb等合金元素對(duì)顯微組織和磁性能的影響。 結(jié)果表明，適量的 W, Mo或Nb能不同程度提高NdFeB磁體的矯頑力，對(duì)剩磁影響不大。顯微組織分析表明，矯頑力的提高可歸因于晶間 TFeB(T＝W, Mo或Nb) 新相的出現(xiàn)。 進(jìn)一步分析表明， 晶間微合金化能夠有效改善NdFeB磁體組織與性能。
關(guān)鍵字: Nd-Fe-B磁體 磁性能 顯微組織 添加劑
（School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, P. R. China）
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.
Key words: Nd-Fe-B magnets magnetic property microstructure additives
