摘要
用快淬Nd-Fe-B磁粉与改性耐热环氧树脂混合经模压成型制备的各向同性粘结磁体,其密度d=6.0g/cm^3,剩磁Br=0.69T,内禀矫顽力_JHc=880 kA/m,最大磁能积(BH)_m=82kJ/m^3,达到国际同类产品性能指标,用它生产的石英钟用步进电机转子的磁性能、机械性能及其对温度、环境和时间的稳定性以及耐腐蚀特性等均已满足实用化要求。
Die-pressed Nd-Fe-B isotropic magnets with density d= 6.0g/ cm^3. B_r= 0.69T,JH_c=880kA/ m and (BH)_(max)=82kJ/ m^3 were developed by using the epoxy bondedmelt-spun Nd-Fe-B powder. The typical magnetic properties have reached the performanceindex of the recent high grade product. The bonded rotor magnets of the stepmotor for use inthe crystal clock have good operational performance.
