| 申请日期 | 2025-06-28 | 申请号 | US16673288 |
| 公开（公告）号 | US11232890B2 | 公开（公告）日 | 2022-01-25 |
| 公开国别 | US | 申请人省市代码 | 全国 |
| 申请人 | DAIDO STEEL CO LTD | ||
| 简介 | The present invention relates to an RFeB sintered magnet containing : 28% to 33% by mass of a rare-earth element R, 0% to 2.5% by mass of Co (cobalt) (i.e., Co may not be contained), 0.3% to 0.7% by mass of Al (aluminum), 0.9% to 1.2% by mass of B (Boron), and less than 1, 500 ppm of O (oxygen), with the balance being Fe, containing an RFeAl phase having an R6Fe14-xAlx structure in a crystal grain boundary, and having a coercivity of 16 kOe or more. | ||
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