Study on Key Techniques for Producing High Performance NdFeB Sintered Permanent Magnets
来源期刊：JOURNAL OF RARE EARTHS2002年第6期
论文作者：李红卫 张深根 张耀 徐静 于敦波 赵进松
Key words：rare earths; NdFeB sintered magnets; high performance;
Abstract: High energy products (BH)max of 365 and 310 kJ·m-3 with intrinsic coercivity iHc 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 Nd2Fe14B small grains, and finally high performance NdFeB sintered magnets were prepared.
李红卫1，张深根1，张耀1，徐静1，于敦波1，赵进松1
(1.General Research Institute for Non-Ferrous Metals,Grirem Advanced Materials Corporation Limited,Beijing 100088,China)
Abstract:High energy products (BH)max of 365 and 310 kJ·m-3 with intrinsic coercivity iHc 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 Nd2Fe14B small grains, and finally high performance NdFeB sintered magnets were prepared.
Key words:rare earths; NdFeB sintered magnets; high performance;
【全文内容正在添加中】
