发明名称 |
Method for compacting magnetic powder in magnetic field, and method for producing rare-earth sintered magnet |
摘要 |
<p>A method for compacting a magnetic powder in a magnetic field comprising steps of filling a die with a magnetic powder, applying a pulsed magnetic field to the magnetic powder in the die to orientate the powder, and compressing the magnetic powder, wherein the pulsed magnetic field is applied twice or more when density Á of a compacted body of said magnetic powder satisfies the relationship Á = ± × H 0.5 + ² (± = 0.63 and ² = 1 to 2), where H is intensity (T) of the applied magnetic field.</p> |
申请公布号 |
EP1557850(A2) |
申请公布日期 |
2005.07.27 |
申请号 |
EP20050001481 |
申请日期 |
2005.01.25 |
申请人 |
TDK CORPORATION |
发明人 |
CHOU, TSUTOMU;NISHIZAWA, GOUICHI;HATAKEYAMA, MASATOSHI;ISHIZAKA, CHIKARA |
分类号 |
H01F1/053;H01F1/057;H01F41/02;(IPC1-7):H01F41/02 |
主分类号 |
H01F1/053 |
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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