| 发明名称 |
R-T-B BASED SINTERED MAGNET AND ROTATING MACHINE |
| 摘要 |
The present invention provides an R-T-B based sintered magnet having excellent corrosion resistance together with good magnetic properties. The R-T-B based sintered magnet contains R2T14B crystal grains, wherein, an R—Ga—Co—Cu—N concentrated part exists in a grain boundary formed between or among two or more adjacent R2T14B crystal grains, and the concentrations of R, Ga, Co, Cu and N in the R—Ga—Co—Cu—N concentrated part are higher than those in the R2T14B crystal grains respectively. |
| 申请公布号 |
US2016163435(A1) |
申请公布日期 |
2016.06.09 |
| 申请号 |
US201414906682 |
申请日期 |
2014.08.08 |
| 申请人 |
TDK CORPORATION |
发明人 |
MIWA Masashi;NAKAJIMA Haruna;KANADA Isao |
| 分类号 |
H01F1/053 |
主分类号 |
H01F1/053 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An R-T-B based sintered magnet comprising R2T14B crystal grains,
wherein, an R—Ga—Co—Cu—N concentrated part exists in the grain boundary formed between or among two or more adjacent R2T14B crystal grains, and the concentrations of R, Ga, Co, Cu and N in the R—Ga—Co—Cu—N concentrated part are higher than those in the R2T14B crystal grains respectively. |
| 地址 |
Tokyo JP |
