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.
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机译:Citizen Expectations and Improvement of Government Functions: A Study of Importance and Performance of Budgetary Demands in China (公民期待和政府功能的改进:一项对中国预算需求和绩效的研究)
机译:The method for reducing intrinsic shaft voltage by suitable selection of pole-arc coefficient in fractional slot permanent magnet synchronous machines