rare earths; NdFeB sintered magnets

作者:张深根,李红卫,赵进松,于敦波,徐静,张耀
关键词:rare earths; NdFeB sintered magnets; high performance
单位:General Research Institute for Non-Ferrous Metals, Grirem Advanced Materials Corporation Limited,General Research Neodymium Magnets
http://www.999magnet.com/products/110-sintered-neodymium-magnets Institute for Non-Ferrous Metals, Grirem Advanced Materials Corporation Limited,General Research Institute for Non-Ferrous Metals, Grirem Advanced Materials Corporation Limited,General Research Institute for Non-Ferrous Metals, Grirem Advanced Materials Corporation Limited,General Research Institute for Non-Ferrous Metals, Grirem Advanced Materials Corporation Limited,General Research Institute for Non-Ferrous Metals, Grirem Advanced Materials Corporation Limited Beijing 100088, China









,Beijing 100088, China









,Beijing 100088, China









,Beijing 100088, China









,Beijing 100088, China









,Beijing 100088, China
摘要:High energy products (BH)    max of 365 and 310 kJ·m    -3 with intrinsic coercivity     iH  c of   1640 kA·m    -1 of NdFeB sintered magnets were produced. Some new techniques were applied, such as thin NdFeB ingot technique, narrow particle distribution on jet mill, low oxygen content control and high aligned magnetic field press. It is necessary to produce thin NdFeB ingot with fine flake crystal, narrow particle distribution, the average size of NdFeB powders less than 4.0 μm, uniform microstructure, high oriented Nd  2Fe    14B small grains, and finally high performance NdFeB sintered magnets were prepared.