| 简介 |
PROBLEM TO BE SOLVED : To provide a manufacturing method for r-t-b-based sintered magnet, preventing degradation of magnetic characteristics due to insufficient density during sintering and achieving excellent safety without causing an increase in manufacturing cost, in a two-alloy method, the manufacturing method being capable of improving Hwithout degrading Busing a texture with concentrated heavy rare earth element RH in an outer shell section of main phase crystal grain.SOLUTION : First alloy powder including Rformed from light rare earth element RL or light rare earth element RL and heavy rare earth element RH, B and Fe and second alloy powder including Rformed from RL and RH, B, Co, and Fe and having higher RH and Co content than the first alloy powder are blended, formed and sintered at a rate of 70 : 30-97 : 3. A difference between contents of Rand Ris not more than 1. |
客服热线：
手机版
二维码
