钕铁硼永磁晶界扩散技术和理论发展的几个问题

刘仲武, 何家毅

Several Issues on the Development of Grain Boundary Diffusion Process for Nd-Fe-B Permanent Magnets

LIU Zhongwu, HE Jiayi

图2 工业生产中涂覆晶界扩散剂的示意图与不同重稀土扩散剂(氟化物、氧化物、氢化物、金属与合金)对烧结磁体的扩散效果[16,20~28]

Fig.2 Schematic of coating method of grain boundary diffusion source in industrial production (a), and the effectiveness and efficiency of different heavy rare earth (HRE) containing diffusion sources for sintered magnets (The diffusion sources include fluoride, oxide, hydride, metal, and alloy of HRE) (b)[16,20-28]