高电阻率NdFeB永磁材料的研究进展与展望  

Research Progress and Prospect of High Electrical Resistivity NdFeB Permanent Magnetic Materials

作　　者：黄光伟 陆通 王亚娜 郑立允 张海天[3] 朱明刚 李卫[2] Huang Guangwei;Lu Tong;Wang Yana;Zheng Liyun;Zhang Haitian;Zhu Minggang;Li Wei(College of Materials Science and Engineering,Hebei University of Engineering,Hebei Engineering Research Center for Rare Earth Permanent Magnetic Materials and Application,Handan 056000,China;Division of Functional Materials,Central Iron and Steel Research Institute,Beijing 100081,China;School of Materials Science and Engineering,Beihang University,Beijing 100191,China)

机构地区：[1]河北工程大学材料科学与工程学院,河北省稀土永磁材料与应用工程研究中心,河北邯郸056038 [2]钢铁研究总院功能材料研究所,北京100081 [3]北京航空航天大学材料科学与工程学院,北京100191

出　　处：《中国稀土学报》2024年第5期826-841,I0001,共17页Journal of the Chinese Society of Rare Earths

基　　金：国家重点研发计划项目(2022YFB3505600);河北省自然科学基金(E2021402001);邯郸市科技项目(21422111275)资助。

摘　　要：NdFeB稀土永磁材料具有优异的磁性能,长期被广泛应用于新能源、信息、轨道交通、以及航空航天等领域。传统NdFeB永磁材料的电阻率较低,在永磁电机服役过程中易受到交变磁场的作用,使磁体内部产生涡流,引起较高温升,导致磁体热退磁,从而降低电机能效甚至带来重大安全隐患。提高NdFeB永磁体的电阻率,能够降低磁体的涡流损耗及磁体温升,是解决磁体热退磁问题的可靠途径。因此,研究和开发高电阻率NdFeB永磁材料具有重要的社会经济价值和科学意义。本文对高电阻率NdFeB永磁材料的研究现状进行归纳总结,并对高电阻率NdFeB永磁材料的研发进行讨论与展望。NdFeB rare earth permanent magnetic material has excellent magnetic properties and has been widely used in new energy,information,rail transit,as well as aerospace and other fields for a long time.The electrical resistivity of traditional NdFeB permanent magnetic material is low,and it is vulnerable to the action of alternating magnetic field in the service process of permanent magnet motor,which generates eddy current inside the magnet,causes high temperature rise,and leads to thermal demagnetization of the magnet,thus reducing the energy efficiency of the motor and even bringing major safety risks.Improving the electrical resistivity of NdFeB permanent magnet can reduce its eddy current loss and the temperature rise,which is a reliable way to solve the problem of thermal demagnetization of magnet.Therefore,the research and development of high electrical resistivity NdFeB permanent magnetic material has important social and economic value and scientific significance.This paper summarizes the research status of high electrical resistivity NdFeB permanent magnetic material,and discusses and prospects the research and development of high electrical resistivity NdFeB permanent magnetic material.

关 键 词：稀土永磁材料 电阻率 磁性能 微结构 永磁电机 

分 类 号：TM273[一般工业技术—材料科学与工程]