发明申请
US20110234350A1 MODIFIED ND-FE-B PERMANENT MAGNET WITH HIGH CORROSION RESISTANCE
有权
具有高耐腐蚀性的改性ND-FE-B永磁体
- 专利标题： MODIFIED ND-FE-B PERMANENT MAGNET WITH HIGH CORROSION RESISTANCE
- 专利标题（中）： 具有高耐腐蚀性的改性ND-FE-B永磁体
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申请号： US13132266申请日： 2008-12-01
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公开(公告)号： US20110234350A1公开(公告)日： 2011-09-29
- 发明人: Mi Yan , Xiangzhi Zhou , Xiongfei Fan , Tianyu Ma , Wei Luo
- 申请人： Mi Yan , Xiangzhi Zhou , Xiongfei Fan , Tianyu Ma , Wei Luo
- 申请人地址： CN Hangzhou, Zhejiang Province CN Dongyang City, Zhejiang Province
- 专利权人： ZHEJIANG UNIVERSITY,ZHEJIANG INNUOVO MAGNETICS INDUSTRY CO., LTD
- 当前专利权人： ZHEJIANG UNIVERSITY,ZHEJIANG INNUOVO MAGNETICS INDUSTRY CO., LTD
- 当前专利权人地址： CN Hangzhou, Zhejiang Province CN Dongyang City, Zhejiang Province
- 国际申请： PCT/CN2008/073271 WO 20081201
- 主分类号： H01F7/02
- IPC分类号： H01F7/02
摘要：
A type of sintered Nd—Fe—B permanent magnet with high corrosion resistance is produced by dual alloy method. The method comprises the following steps: preparing the powders of master phase alloy and intergranular phase alloy respectively, mixing the powders, compacting the powders in magnetic field, sintering the compacted body at 1050˜1125° C., and annealing at 920-1020° C. and 500-650° C. successively
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