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

表1 不同重稀土扩散剂的优劣势

Table 1 Advantages and disadvantages (A&D) of different HRE containing diffusion sources

A&D Oxide Fluoride Hydride Metal/alloy Diffusion efficiency Low Moderate High High Cost advantage High Moderate Low Low Level of “green” Moderate Low High High