发明授权
- 专利标题: Composition for permanent magnet
- 专利标题(中): 永久磁铁组成
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申请号: US089222申请日: 1998-06-03
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公开(公告)号: US5942053A公开(公告)日: 1999-08-24
- 发明人: Shigenobu Sekine , Hiroji Sato , Minoru Narita
- 申请人: Shigenobu Sekine , Hiroji Sato , Minoru Narita
- 申请人地址: JPX Tokyo
- 专利权人: Sanei Kasei Co., Ltd.
- 当前专利权人: Sanei Kasei Co., Ltd.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX10-112126 19980422
- 主分类号: C22C38/00
- IPC分类号: C22C38/00 ; H01F1/053 ; H01F1/057
摘要:
The object of the invention is to provide a composition for permanent magnet with excellent magnetic properties exhibiting well the latent ability of the RFeB system tetragonal compounds. The composition for permanent magnet according to the present invention is a complex of (1) a crystalline RFeB or RFeCoB system compound having a tetragonal crystal structure with lattice constants of a.sub.o about 8.8 .ANG. and c.sub.o about 12 .ANG., in which R is at least one of rare earth elements, and (2) a crystalline neodymium oxide having a cubic crystal structure, in which both crystal grains are epitaxially connected and the RFeB or RFeCoB crystal grains are oriented to the c.sub.o direction. The lattice constant a.sub.o of the cubic Nd.sub.2 O.sub.3 is about 4.4 .ANG. which is the half length of the lattice constant a.sub.o about 8.8 .ANG. for the RFeB or RFeCoB tetragonal crystal, and the epitaxial connection is achieved, and the RFeB or RFeCoB crystal grains are oriented to the c.sub.o direction.
公开/授权文献
- USD422176S Cooking vessel seal 公开/授权日:2000-04-04