发明名称 |
Alloy flake for rare earth magnet, production method thereof, alloy powder for rare earth intered magnet, rare earth sintered magnet, alloy powder for bonded magnet and bonded magnet |
摘要 |
Disclosed is a rare earth magnet in the R-T-B (rare earth element-transition metal-boron) system that is made from an improved composition and properties of main phase alloy in the R-T-B system containing Pr and a boundary alloy. Disclosed also is a manufacturing method of the rare earth magnet alloy flake by a strip casting method with improved rotating rollers such that the alloy flake has a specified fine surface roughness and has a small and regulated amount of fine R-rich phase regions. Consequently, the alloy flake for the rare earth magnet does not containing alpha-Fe and has a homogeneous morphology so that the rare earth magnet formed by sintering or bonding the alloy flakes exhibits excellent magnetic properties.
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申请公布号 |
US2005028892(A1) |
申请公布日期 |
2005.02.10 |
申请号 |
US20040498932 |
申请日期 |
2004.06.16 |
申请人 |
SASAKI SHIRO |
发明人 |
SASAKI SHIRO |
分类号 |
B22F1/00;B22F9/02;B22F9/10;C22C1/04;C22C38/00;C22C38/10;H01F1/057;(IPC1-7):H01F1/057 |
主分类号 |
B22F1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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