烧结NdFeB磁体的显微组织和磁性的研究

Study On Microstructure and Magnetic Properties of Sintered NdFeB Magnet

采用能谱、扫描电镜等手段 ,研究烧结NdFeB磁体的显微组织及磁性能。结果表明 ,加入Nb可细化晶粒 ,并有大量的二次晶粒析出 ,使矫顽力提高。Tb的加入量不能太多 。

The microstructure and magnetic properties of sintered NdFeB magnet are studied by ENERGY SPECTRUM? SEM. The result show that the microstructure could become fine by Nb addition, Nb containing precipitates dispersed in the matrix, and the coercivity could be enhanced.