| 申请日期 | 2025-07-20 | 申请号 | US12132689 |
| 公开（公告）号 | US20080271821A1 | 公开（公告）日 | 2008-11-06 |
| 公开国别 | US | 申请人省市代码 | 全国 |
| 申请人 | Hiroyuki TOMIZAWA | ||
| 简介 | An R-T-B based sintered magnet according to the present invention has a composition comprising : 12 at % to 17 at % of a rare-earth element R; 5.0 at % to 8.0 at % of boron B; 0.1 at % to 1.0 at % of Al; 0.02 at % to less than 0.2 at % of Mn; and a transition metal T as the balance. The rare-earth element R is at least one element selected from the rare-earth elements, including Y (yttrium), and includes at least one of Nd and Pr. The transition element T includes Fe as its main element. | ||
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