发明名称 |
Manufacturing method of an anisotropic magnet powder, precursory anisotropic magnet powder and bonded magnet |
摘要 |
This invention aims to provide a manufacturing method of an anisotropic magnet powder from which a bonded magnet with an improved loss of magnetization due to structural changes can be achieved. This is achieved by employing a low-temperature hydrogenation process, high-temperature hydrogenation process and the first evacuation process to an RFeB material (R: rare earth element) to manufacture a hydride powder (RFeBHx); the obtained RFeBHx powder (the precursory anisotropic magnet powder) is subsequently blended with a diffusion powder composed of hydride of dysprosium or the like and a diffusion heat-treatment process and a dehydrogenation process are employed. Through this series of processes, an anisotropic magnet powder with a great coercivity and a great degree of anisotropy can be achieved.
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申请公布号 |
US6709533(B2) |
申请公布日期 |
2004.03.23 |
申请号 |
US20010955078 |
申请日期 |
2001.09.19 |
申请人 |
AICHI STEEL CORPORATION |
发明人 |
HONKURA YOSHINOBU;HAMADA NORIHIKO;MISHIMA CHISATO |
分类号 |
H01F1/06;H01F1/053;H01F1/057;H01F41/02;(IPC1-7):H01F1/057 |
主分类号 |
H01F1/06 |
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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