| 摘要 |
PROBLEM TO BE SOLVED: To provide a R-T-B-based sintered magnet exhibiting superior corrosion resistance, even if a wide grain boundary phase is formed as a Nd-rich composition in order to enhance magnetic decoupling effect between RTB main phase crystal particles, for higher coercive force of a sintered magnet.SOLUTION: A R-T-B-based sintered magnet contains RTB main phase crystal particles, R-rich phase crystal particles, and a grain boundary phase. R-rich phase crystal particles having crystal habit are added to the R-rich phase crystal particles. |
