| 申请日期 | 2025-06-24 | 申请号 | WOJP08001727 |
| 公开（公告）号 | WO2009004794A1 | 公开（公告）日 | 2009-01-08 |
| 公开国别 | WO | 申请人省市代码 | 全国 |
| 申请人 | HITACHI METALS LTD; YOSHIMURA Koshi; MORIMOTO Hideyuki; ODAKA Tomoori | ||
| 简介 | An R-Fe-B type rare earth sintered magnet in which the R2Fe14B type compound grains present at a depth of 20μm from the surface of the magnet have each an outer skin layer of (RL1-xRHx)2Fe14B (wherein 0.2≤x≤0.75) having a thickness of 1nm to 2μm (wherein RL is at least one light rare earth element selected from between Nd and Pr; and RH is at least one heavy rare earth element selected from the group consisting of Dy, Ho and Tb). | ||
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