Current status and recent topics of rare-earth permanent magnets
Current status and recent topics of rare-earth permanent magnets
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DOI：
10.1088/0022-3727/44/6/064001
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发表时间：
2011-02-16
影响因子：
3.4
通讯作者：
Sugimoto, S.
中科院分区：
文献类型：
--
作者：
Sugimoto, S.
在Nd-Fe-B磁体的发展之后，稀土磁体现在是许多技术领域中必不可少的部件，因为它们能够提供强磁通量。有两种成熟的技术用于制造稀土磁体：粉末冶金用于获得高性能、各向异性、完全致密的磁体;熔融纺丝或HDDR（氢化、脱附、解吸和复合）工艺广泛用于生产粘结磁体的磁粉。在烧结Nd-Fe-B磁体行业中，生产总量增加，其主导应用已转变为电机。特别是，它们用于混合动力汽车中的马达是最有吸引力的应用之一。粘结磁体也被用于小型电机，纳米复合材料和Sm-Fe-N磁体的研究已经变得广泛。本文综述了永磁材料的研究现状和发展趋势。
After the development of Nd-Fe-B magnets, rare-earth magnets are now essential components in many fields of technology, because of their ability to provide a strong magnetic flux. There are two, well-established techniques for the manufacture of rare earth magnets: powder metallurgy is used to obtain high-performance, anisotropic, fully dense magnet bodies; and the melt-spinning or HDDR (hydrogenation, disproportionation, desorption and recombination) process is widely used to produce magnet powders for bonded magnets. In the industry of sintered Nd-Fe-B magnets, the total amount of production has increased and their dominant application has been changed to motors. In particular, their use for motors in hybrid cars is one of the most attractive applications. Bonded magnets have also been used for small motors, and the studies of nanocomposite and Sm-Fe-N magnets have become widespread. This paper reviews the current status and future trend in the research of permanent magnets.