SmFe12基稀土永磁材料的外禀磁性能研究进展
Advances in the extrinsic magnetic properties of SmFe12-based rare earth permanent magnetic materials
李家节 1游家兴 2万世云 1翁前军 1蒋陈1
作者信息
- 1. 江西理工大学稀土学院,江西赣州 341000;国家稀土功能材料创新中心,江西赣州 341000
- 2. 江西理工大学材料科学与工程学院,江西赣州 341000;国家稀土功能材料创新中心,江西赣州 341000
- 折叠
摘要
ThMn12型SmFe12基合金作为一种富Fe型稀土永磁材料,因较少的稀土用量和高的内禀磁性能而被认为是潜在的下一代稀土永磁体.优异的内禀磁性能却无法转化为可实用的外禀磁性能,这是目前制备高性能SmFe12基永磁材料所需要克服的主要难关.从SmFe12基永磁材料主要的合金形态切入,系统阐述了其外禀磁性能在磁控溅射薄膜、快淬条带、块状磁体等几个方面的研究进展,深入讨论了 SmFe12基1∶12相的形成机制、合金磁体矫顽力的提升机制及其内部相组成和微观结构对磁性能的影响.最后,提出了一种获取高磁性能SmFe12基块状磁体的方案及其制备方法,希望为制备SmFe12基高性能块状永磁体提供参考思路.
Abstract
ThMn12-type SmFe12-based alloy,as a Fe-rich rare earth permanent magnet material,is considered a po-tential candidate for the next generation of rare earth permanent magnets due to its reduced rare earth usage and high intrinsic magnetic properties.The challenge of converting excellent intrinsic magnetic properties into practically use-ful extrinsic magnetic properties remains the major hurdle in developing high-performance SmFe12-based permanent magnets.Delves into the primary alloy forms of SmFe12-based permanent magnetic materials,summarizing the re-cent advances in extrinsic magnetic properties of SmFe12-based alloys in areas such as magnetron sputtering films,melt-spun ribbons,and bulk magnets.It provides an in-depth discussion on the formation mechanism of the SmFe12-based 1∶12 phase,the enhancement mechanisms of coercivity in alloy magnets,and the effects of internal phase composition and microstructure on magnetic performance.Finally,based on the insights gained,we propose a scheme and preparation method for obtaining high-performance SmFe12-based bulk magnets,aiming to offer valuable insights for the fabrication of high-performance SmFe12-based bulk permanent magnets.
关键词
SmFe12基合金/磁性能/微观结构/块状磁体Key words
SmFe12-based alloy/magnetic properties/microstructure/bulk magnet引用本文复制引用
出版年
2024
NETL
NSTL
万方数据