发明申请
- 专利标题： Rare-earth sintered magnet and method for producing the same
- 专利标题（中）： 稀土烧结磁体及其制造方法
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申请号： US11236708申请日： 2005-09-26
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公开(公告)号： US20070240790A1公开(公告)日： 2007-10-18
- 发明人: Teruyoshi Kita , Haruhiko Shimizu , Takayuki Higashi , Shigeki Muroga , Futoshi Kuniyoshi , Yuji Kaneko , Akihito Tsujimoto
- 申请人： Teruyoshi Kita , Haruhiko Shimizu , Takayuki Higashi , Shigeki Muroga , Futoshi Kuniyoshi , Yuji Kaneko , Akihito Tsujimoto
- 优先权： JP2004-278840 20040927
- 主分类号： H01F1/057
- IPC分类号： H01F1/057
摘要：
A rare-earth sintered magnet according to the present invention includes: 28.5 mass % to 32.0 mass % of R, which includes Tb and at least one of the other rare-earth elements; 0.91 mass % to 1.15 mass % of B; at most 0.35 mass % of oxygen; and Fe with or without Co and inevitably contained impurities as the balance. The magnet includes 3.2 mass % to 5.2 mass % of Tb, and has a remanence Br of at least 1.29 T, a coercivity HcJ of at least 2.4 MA/m and a maximum energy product (BH)max of at least 320 kJ/m3.
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