摘要
The microstructure of Nb-coniaining NdDyFeCoB magnets has been vestigated using transmission electron microscope.Very small particles whose diameters are about several to 40A have been found in as-sintered magnets.It may be formed by self-tempering.Dislocations and stacking faults have been found inside grains.It seems that the increase of coercive field in Nb-containing magnets is closely related with defects and precipitations.
作者
刘金芳
饶晓雷
张南宁
罗河烈
LIU Jinfang;RAO Xiaolei;ZHANG Nanning;LUO Helie(Institute of Physics,Academia Sinica,Beijing,and San huan Corporation,Academia Sinica,Beijing)
