(Ce,RE)-Fe-B永磁材料的研究开发新进展

New Progress in Research and Development of( Ce,RE)-Fe-B Permanent Magnetic Materials

中国Nd-Fe-B磁体产业的连年高速发展,造成稀土Ce的大量积压。为解决高丰度稀土资源Ce的平衡利用和高质化利用问题,同时也为了降低磁体原材料成本,提高市场竞争力,近年来围绕低成本(Ce,RE)-Fe-B磁体展开了一系列研究开发工作。对Ce-Fe-B磁体的内秉磁性和相组成,(Ce,RE)_2Fe_(14)B化合物中Ce的价态、原子占位等研究结果进行综述分析;对快淬和烧结(Ce,RE)-Fe-B磁体的研究进展,对烧结(Ce,RE)-Fe-B磁体的制备新技术及产业化开发现状进行报道,并展望其未来的发展趋势。

Due to the rapid development of China＇s Nd-Fe-B magnet industry, the balanced utilization of rare-earth resources becomes a problem that is overstocking of Ce in recent years. For the purposes of using Ce in high-quality, and decreasing the raw material cost of the magnets, the systematically investigations were doing on （ Ce, RE） - Fe-B magnets. In this article, the intrinsic magnetic properties and phase compositions of Ce-Fe-B alloys were sum- marized, and valency of Ce and site preference in （Ce,RE）2Fel4B compounds were also discussed. The research development of melt-spun and sintered （ Ce, RE） -Fe-B magnets, the prepared technology of dual-main phases of sintered （Ce, RE）-Fe-B magnets and their industrialization was introduced. The research and development trends of （Ce, RE）-Fe-B magnets were pointed out in the future.