孙绪新,包小倩,高学绪,张茂才,董清飞,周寿增

• 1:北京科技大学新金属材料国家重点实验室
• 2:运城恒磁科技有限公司

摘要(Abstract)：

用双合金工艺将主合金粉(简称MB)与富稀土辅合金粉(简称SB)按不同比例混合制备一系列烧结Nd-Fe-B磁体。对主合金鳞片铸锭均匀化处理后,制备的磁体晶粒尺寸变粗,矫顽力下降。与烧结态相比,所有磁体回火后矫顽力提高,微观组织分析表明,主要是主相晶粒边界光滑、平直,富Nd相连续均匀分布于主相晶粒周围。但辅合金SB含量不同,回火提高矫顽力的程度不同,比如MB的矫顽力从1971kA/m仅仅增加到2053kA/m;添加6wt%SB后,矫顽力则从1998kA/m大幅提高到2880kA/m。

关键词(KeyWords)： 烧结Nd-Fe-B;回火;矫顽力;边界结构

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 孙绪新,包小倩,高学绪,张茂才,董清飞,周寿增

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