发明申请
- 专利标题： RARE EARTH SINTERED MAGNET AND METHOD FOR PRODUCING SAME
- 专利标题（中）： 稀土烧结磁体及其制造方法
-
申请号： US12095617申请日： 2006-11-30
-
公开(公告)号： US20100148897A1公开(公告)日： 2010-06-17
- 发明人: Noriyuki Nozawa , Tomoori Odaka , Yutaka Matsuura
- 申请人： Noriyuki Nozawa , Tomoori Odaka , Yutaka Matsuura
- 优先权： JP2005-349199 20051202
- 国际申请： PCT/JP2006/324012 WO 20061130
- 主分类号： H01F7/02
- IPC分类号： H01F7/02 ; B22F1/00 ; B22F3/12
摘要：
A sintered rare-earth magnet includes an Nd2Fe14B type crystalline phase as its main phase and Al as an additive. The magnet includes at least one light rare-earth element LR selected from the group consisting of yttrium and the rare-earth elements other than Dy, Ho and Tb, and at least one heavy rare-earth element HR selected from the group consisting of Dy, Ho and Tb. The mole fractions α1, α2 and β of the light and heavy rare-earth elements LR and HR and Al satisfy the inequalities 25≦α1+α2≦40 mass %, 0 0.20 mass %, and 0.04≦β/α2≦0.12.
公开/授权文献
- US08182618B2 Rare earth sintered magnet and method for producing same 公开/授权日：2012-05-22
信息查询
