重稀土晶界扩散工艺制备高矫顽力钕铁硼磁体研究进展与应用现状  

Developments and Applications of Preparing High Coercive Nd-Fe-B Magnets via Heavy Rare Earth Grain Boundary Diffusion Process

作　　者：田广科[1] 陆中砥 柴培钊 王瑜 许亿 夏原[3] TIAN Guangke;LU Zhongdi;CHAI Peizhao;WANG Yu;XU Yi;XIA Yuan(National Engineering Research Center for Technology and Equipment of Green Coating,Lanzhou Jiaotong University,Lanzhou 730070,China;Baotou Jinshan Magnetic Material Co.,Ltd.,Baotou 014000,Inner Mongolia,China;Institute of Mechanics,Chinese Academy of Sciences,Beijing 100083,China)

机构地区：[1]兰州交通大学国家绿色镀膜技术与装备工程技术研究中心,兰州730070 [2]包头金山磁材有限公司,内蒙古包头014000 [3]中国科学院力学研究所,北京100083

出　　处：《材料导报》2025年第6期167-172,共6页Materials Reports

基　　金：国家重点研发计划(2021YFB3500100)。

摘　　要：重稀土晶界扩散技术是目前制造高矫顽力钕铁硼磁体最重要的一种技术手段。本文简要介绍了重稀土晶界扩散的概念及用于工程化制备高性能钕铁硼磁体的应用现状,重点分析了重稀土晶界扩散技术近年来最新的代表性研究成果,提出了该技术当前亟待攻克的几个主要问题。文章对重稀土晶界扩散制备高性能钕铁硼磁材的进一步发展和工程化应用具有一定的指导意义。The grain boundary diffusion process(GBDP)of heavy rare earth elements such as Dy and Tb into Nd-Fe-B permanent magnets is the most important approach to enhance the magnets with high coercive force.This paper briefly introduces the concept of GBDP and the application status in the manufacture of high-performance sintered Nd-Fe-B permanent magnets.The latest representative research results in recent years are analyzed,and several possible problems that need to be overcome are presented.This review has certain guiding significance for the further development of high performances Nd-Fe-B magnetic materials.

关 键 词：烧结钕铁硼永磁体 晶界扩散 重稀土 

分 类 号：TF124[冶金工程—粉末冶金]