| 申请日期 | 2025-07-11 | 申请号 | US11589818 |
| 公开（公告）号 | US20070095438A1 | 公开（公告）日 | 2007-05-03 |
| 公开国别 | US | 申请人省市代码 | 全国 |
| 申请人 | Shiro Sasaki; Hiroshi Hasegawa; Kenichiro Nakajima | ||
| 简介 | An R-T-B type alloy (wherein R is at least one member selected from rare earth elements, T is a transition metal including Fe, and B includes boron) which is a raw material for use in a rare earth-based permanent magnet, wherein the volume percentage of the region containing an R2T17 phase having an average grain diameter of 3 μm or less in the short axis direction is from 0.5 to 10%. | ||
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