对真空HDDR方法制备各向异性NdFeB磁粉的工艺进行了改进.发现通过增加一步缓慢脱氢处理和低温氢气预处理,可使三元NdFeB合金稳定获得较高的综合磁性能.目前在最佳工艺下得到的三元NdFeB各向异性粘结磁体的磁性能为:Br=O.80T,iHc=730kA/m,BHmax=100KJ/m3.
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