发明名称 |
Bond magnet and manufacturing method thereof, and actuator therewith |
摘要 |
A bond magnet comprises a molded body in which a mixture of flake of magnet material comprising rare earth element-iron-nitrogen as main component, TbCu7 type crystal phase as a principal phase and a thickness of less than 200 mum a binder is compression molded. A compression molded body constituting a bond magnet has a density of 6x103 kg/m3 or more. In the step of compression molding a mixture of magnet material and binder, pressure is applied a plurality of times, or pressure is applied while rotating a punch and die, or the binder is cured while applying pressure to obtain such a bond magnet with good reproducibility. Such a bond magnet has excellent magnetic properties and corrosion resistance.
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申请公布号 |
US6317020(B1) |
申请公布日期 |
2001.11.13 |
申请号 |
US20000573186 |
申请日期 |
2000.05.19 |
申请人 |
KABUSHIKI KAISHA TOSHIBA |
发明人 |
NAKAGAWA KATSUTOSHI;KAWASHIMA FUMIYUKI;SAWA TAKAO;SAKURADA SHINYA;ARAI TOMOHISA |
分类号 |
B22F1/00;B22F3/00;B22F5/10;C22C38/00;G11B5/48;G11B21/02;H01F1/059;H01F1/08;H01F41/02;(IPC1-7):H01F7/02 |
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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