摘要
随着新能源汽车、风力发电和电子产品的迅速发展,对钕铁硼永磁材料的需求日益增加,导致稀土金属钕的价格逐渐攀升。为了降低钕的消耗,采用高丰度轻稀土铈取代钕,成为降低成本和均衡利用稀土元素的一个重要突破口。目前,钕铈铁硼(Nd-Ce-Fe-B)的研究取得了一定进展,但随着Ce的掺杂,各项磁性能均降低,而且Ce的添加还会导致磁体的居里温度和热稳定性降低,使其无法在较高温度下工作。随着晶界扩散技术应用于含Ce磁体中,Ce磁体的缺点得到明显改善。本文对国内外钕铈铁硼晶界扩散近期发展现状,钕铈铁硼发展中遇到的问题和对钕铈铁硼未来的发展趋势进行概述。
With the rapid advancement of new energy vehicles,wind power generation,and electronic products,the demand for neodymium iron boron permanent magnet materials is increasing,resulting in a steady increase in the price of rare earth metal neodymium.To minimize neodymium consumption,replacing it with high-abundance light rare earth cerium has emerged as a significant breakthrough point in cost reduction and balanced utilization of rare earth elements.Currently,research on neodymium cerium iron boron(Nd-Ce-Fe-B)has made some progress.Howerer,with the doping of cerium,not only does it reduce various magnetic properties,but also leads to a decrease in the Curie temperature and thermal stability of the magnet,making it unable to operate at higher temperatures.The application of grain boundary diffusion technology in Ce-containing magnets has notably ameliorated the drawbacks associated with Ce magnets.This article provides an overview of the recent progress in neodymium cerium iron boron grain boundary diffusion globally,addresses the challenges faced in the development of neodymium cerium iron boron,and outlines the future development trends of neodymium cerium iron boron.
作者
叶力升
王磊
尧唤茂
赵康
YE Lisheng;WANG Lei;YAO Huanmao;ZHAO Kang(School of Rare Earth,Jiangxi University of Science and Technology,Ganzhou 341000,China)
出处
《电工材料》
2025年第6期1-8,共8页
Electrical Engineering Materials
基金
纳米合金/Nd-Fe-B复合永磁体的晶界优化及矫顽力增强机制研究(2021BAB204021)。
关键词
稀土永磁材料
钕铈铁硼
晶界扩散技术
矫顽力
rare earth permanent magnet materials
neodymium cerium iron boron
grain boundary diffusion technology
coercivity
