| 申请日期 | 2025-07-10 | 申请号 | US11315099 |
| 公开（公告）号 | US8012269B2 | 公开（公告）日 | 2011-09-06 |
| 公开国别 | US | 申请人省市代码 | 全国 |
| 申请人 | Kenji Yamamoto; Koichi Hirota; Takehisa Minowa | ||
| 简介 | A rare earth permanent magnet material is based on an R—Fe—Co—B—Al—Cu system wherein R is at least one element selected from Nd, Pr, Dy, Tb, and Ho, 15 to 33% by weight of Nd being contained. At least two compounds selected from M-B, M-B—Cu and M-C compounds (wherein M is Ti, Zr or Hf) and an R oxide have precipitated within the alloy structure as grains having an average grain size of up to 5 μm which are uniformly distributed in the alloy structure at intervals of up to 50 μm. | ||
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