发明申请
- 专利标题: RARE EARTH-FREE PERMANENT MAGNETIC MATERIAL
- 专利标题(中): 稀土永磁材料
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申请号: US14232830申请日: 2012-07-16
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公开(公告)号: US20140210581A1公开(公告)日: 2014-07-31
- 发明人: Laura H. Lewis , Jeffrey E. Shield , Katayun Barmak
- 申请人: Laura H. Lewis , Jeffrey E. Shield , Katayun Barmak
- 国际申请: PCT/US12/46935 WO 20120716
- 主分类号: H01F1/01
- IPC分类号: H01F1/01 ; H01F41/02
摘要:
The invention provides rare earth-free permanent magnetic materials and methods of making them. The materials can be used to produce magnetic structures for use in a wide variety of commercial applications, such as motors, generators, and other electromechanical and electronic devices. Magnets fabricated using the materials can be substituted for magnets requiring rare earth elements that are costly and in limited supply. The invention provides two different types of magnetic materials. The first type is based on an iron-nickel alloy that is doped with one or more doping elements to promote the formation of L10 crystal structure. The second type is a nanocomposite particle containing magnetically hard and soft phases that interact to form an exchange spring magnetic material. The hard phase contains Fe or FeCo, and the soft phase contains AlMnC.
公开/授权文献
- US10332661B2 Rare earth-free permanent magnetic material 公开/授权日:2019-06-25