| 申请日期 | 2025-07-11 | 申请号 | US13456250 |
| 公开（公告）号 | US20120206227A1 | 公开（公告）日 | 2012-08-16 |
| 公开国别 | US | 申请人省市代码 | 全国 |
| 申请人 | Koshi YOSHIMURA; Hideyuki MORIMOTO; Tomoori ODAKA | ||
| 简介 | In an R—Fe—B based rare-earth sintered magnet according to the present invention, at a depth of 20 μm under the surface of its magnet body, crystal grains of an R2Fe14B type compound have an (RL1−xRHx)2Fe14B (where 0.2≦x≦0.75) layer with a thickness of 1 nm to 2 μm in their outer periphery. In this case, the light rare-earth element RL is at least one of Nd and Pr, and the heavy rare-earth element RH is at least one element selected from the group consisting of Dy, Ho and Tb. | ||
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