发明授权
- 专利标题： Corrosion resistant rare earth magnet and its preparation
- 专利标题（中）： 耐腐蚀稀土磁铁及其制备方法
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申请号： US10170448申请日： 2002-06-14
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公开(公告)号： US06777097B2公开(公告)日： 2004-08-17
- 发明人: Ryuji Hamada , Takehisa Minowa
- 申请人： Ryuji Hamada , Takehisa Minowa
- 优先权： JP2001-179533 20010614
- 主分类号： B22B900
- IPC分类号： B22B900
摘要：
On a surface of a rare earth permanent magnet R—T—M—B wherein R is a rare earth element, T is Fe or Fe and Co, M is Ti, Nb, Al, V, Mn, Sn, Ca, Mg, Pb, Sb, Zn, Si, Zr, Cr, Ni, Cu, Ga, Mo, W or Ta, 5 wt %≦R≦40 wt %, 50 wt %≦90 wt %, 0 wt %≦M≦8 wt %, and 0.2 wt %≦B≦8 wt %, a solution comprising a flake fine powder of Al, Mg, Ca, Zn, Si, Mn or an alloy thereof and a silicone resin is applied and baked to form an adherent composite coating, thereby providing a corrosion resistant rare earth permanent magnet.
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