SmFe_(12)基永磁体的研究新进展  

Recent Progress in Sm Fe_(12)-based Permanent Magnets

作　　者：刘立斌 李玉卿 张东涛[1] 岳明[1] LIU Li-bin;LI Yu-qing;ZHANG Dong-tao;YUE Ming(Key Laboratory of Advanced Functional Materials,Ministry of Education of China,Faculty of Materials and Manufacturing,Beijing University of Technology,Bejing 100124,China)

机构地区：[1]北京工业大学材料与制造学部新型功能材料教育部重点实验室,北京100124

出　　处：《稀土》2024年第2期1-19,共19页Chinese Rare Earths

基　　金：国家重点研发计划项目(2021YFB3500300);国家自然科学基金重点项目(51931007)。

摘　　要：社会的发展、科技的进步及绿色产业的快速发展,都对作为基础功能材料的稀土永磁材料提出了更高的要求。目前现有稀土永磁材料主要包括:钐钴永磁材料和钕铁硼永磁材料。钐钴永磁材料室温磁性能偏低;钕铁硼永磁材料居里温度低不适合高温应用,且高矫顽力严重依赖重稀土资源。而具有ThMn_(12)型结构的SmFe_(12)基永磁化合物具有优异的内禀磁性能,是发展新型永磁材料的有力候选之一,也吸引了永磁材料领域研究者的密切关注。本文旨在综述近年来ThMn_(12)型结构的Sm-Fe永磁材料的研究工作。首先,关注元素取代对SmFe_(12)基永磁化合物内禀磁性能的影响;其次,重点关注实现SmFe_(12)基永磁合金的磁硬化方面的进展。从形核理论和钉扎理论两方面归纳SmFe_(12)基永磁合金的磁硬化相关研究。在此基础上展望了SmFe_(12)基永磁合金作为实用永磁材料的潜力,指导未来研发方向。With the development of society, the progress of science and technology, and the rapid development of green industry, higher requirements have been put forward for permanent magnet as basic functional materials.At present, the existing rare-earth permanent magnets mainly include samarium-cobalt and neodymium-iron-boron magnet. The magnetic properties of samarium-cobalt magnet at room temperature are relatively low. However, the low Curie temperature of NdFeB permanent magnet is not suitable for high temperature applications, and its high coercivity depends heavily on heavy rare earth resources. The SmFe_(12)-based permanent magnet with ThMn_(12) structure is one of the strong candidates for the development of new permanent magnet materials due to its excellent intrinsic magnetic properties, and has attracted the close attention of researchers in this field. This paper reviews the recent research on SmFe_(12)-based permanent magnet with ThMn_(12) structure. First of all, the effect of element substitution on the intrinsic magnetic properties of SmFe_(12)-based permanent magnetic compounds is concerned;Secondly, we focus on the progress in realizing the magnetic hardening of SmFe_(12)-based permanent magnetic alloys. The research on magnetic hardening of SmFe_(12)-based alloy is summarized from two aspects of nucleation theory and pinning theory. On this basis, the potential of SmFe_(12)-based alloys as a practical permanent magnetic material is prospected to guide the future research and development direction.

关 键 词：稀土永磁材料 SmFe_(12)相 磁性能 硬磁化 

分 类 号：TG146.45[一般工业技术—材料科学与工程]