发明申请
- 专利标题： RARE-EARTH PERMANENT MAGNETIC POWDER, BONDED MAGNET CONTAINING THEREOF AND DEVICE USING THE BONDED MAGNET
- 专利标题（中）： 稀土永磁粉末，含有粘合磁铁及使用粘结磁铁的设备
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申请号： US14651560申请日： 2013-05-31
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公开(公告)号： US20150318089A1公开(公告)日： 2015-11-05
- 发明人: Hongwei Li , Yang Luo , Dunbo Yu , Kuoshe Li , Wenlong Yan , Shipeng Li , Yongqiang Yuan , Haijun Peng
- 申请人： Hongwei Li , Yang Luo , Dunbo Yu , Kuoshe Li , Wenlong Yan , Shipeng Li , Yongqiang Yuan , Haijun Peng
- 国际申请： PCT/CN2013/076605 WO 20130531
- 主分类号： H01F1/059
- IPC分类号： H01F1/059 ; H01F1/22 ; H01F41/02 ; C21D6/00 ; C21D1/18 ; C22C38/00 ; C22C38/10 ; C22C38/14 ; C22C38/12 ; C22C38/06 ; C22C38/02 ; B22F9/08 ; C23C8/22 ; C23C8/26 ; H01F1/055 ; H01F1/08
摘要：
A rare-earth permanent magnetic powder, a bonded magnet containing thereof and a device using the bonded magnet are provided of the present disclosure. The rare-earth permanent magnetic powder comprises: 70 vol % to 99 vol % of a hard magnetic phase and 1 vol % to 30 vol % of a soft magnetic phase, the hard magnetic phase has a TbCu7 structure, and the grain size of the hard magnetic phase is 5 nm to 100 nm; the soft magnetic phase is a Fe phase having a bcc structure, the average grain size of the soft magnetic phase is 1 nm to 30 nm, and the standard deviation of the grain size is below 0.5σ.
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