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by HD method were investigated by X-ray diffraction(XRD) and BH magnetometers.The results of the microstructure showed that both the Tb-doped and undoped permanent magnets were composed mostly...Effect of Terbium addition on the coercivity of the sintered NdFeB magnets泮敏翔1,张朋越1,李贤君2,葛洪良1,吴琼1,焦志伟11. Department of Materials Science and Engineering,China Jiliang University2. Beijing Research......
by HD method were investigated by X-ray diffraction(XRD) and BH magnetometers.The results of the microstructure showed that both the Tb-doped and undoped permanent magnets were composed mostly...Effect of Terbium addition on the coercivity of the sintered NdFeB magnets泮敏翔1,张朋越1,李贤君2,葛洪良1,吴琼1,焦志伟11. Department of Materials Science and Engineering,China Jiliang University2. Beijing Research......
a new prospect for the utilization of LaCe mischmetal in 2:14:1-type permanent magnets.关键词:...Microstructural design in LaCe misch-metal substituted 2:14:1-type sintered magnets by dual-alloy methodKan Chen1,2,Shuai Guo1,Hongliang Zhao2,Xiaodong Fan1,Fengchun Fan2,Guangfei Ding1,Renjie......
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nanoparticles was applied to fabricate Tb-less sintered NdFe-B permanent magnets with high coercivity. The magnetic properties and microstructure of magnets were systematically studied. The coercivity...Coercivity,microstructure,and thermal stability of sintered Nd-Fe-B magnets by grain boundary diffusion with TbH3 nanoparticlesWei-Qiang Liu,Cheng Chang,Ming Yue,Jing-Shan Yang,Dong-Tao Zhang,Jiu......
of the polymer tube is to support and fasten the windings. The moving part (translator) is composed of axially magnetized permanent magnets and iron pieces. The translator is surrounded by a non-magnetic... [5-6], where Br and mr are the remanence and the relative recoil permeability of the permanent magnets respectively, m0=4p'10-7 H/m, r is the electric resistivity of the copper, kf is defined......
The Studies of Composite Electroless Plating Process on Sintering Ndfeb Permanent Magnet MENG Yong-qiang1,MA Jing1,HU Jian-wen1,YAN Dong-Qing1,GAO Qing1 (1.School of material, Hebei University of Science and Technology, Shijiazhuang, China) 摘要:A reasonable pre-treatment and an ultrasonic pre-plating Cu film were applied for sintering NdFeB permanent magnet. The samples were then plated......
Article ID: 1003-6326(2005)03-0631-05 Numerical simulation for permanent mold centrifugal cast TiAl exhaust valve SHENG Wen-bin(盛文斌)1, 2, LI Dong(李 东)2 (1. Department of Mechanical... temperature of the mold, are suggested for the manufacture of permanent mold centrifugal cast TiAl exhaust valves. Key words: TiAl alloy; exhaust valve; permanent mold; mathematical model; off-center......
synchronous machine (PMSM), permanent magnets may not produce pure sinusoidal flux distribution, and rotor saliency, pole shape and possible magnetic saturation can cause harmonics in the air-gap flux [9... of PMSM itself, permanent magnets may produce non- sinusoidal back EMF and rotor saliency, pole shape and possible magnetic saturation can cause harmonics in the air-gap flux. Considering the non......
理的SPS NdFeB永磁材料的SEM像 Fig.1 SEM images of SPS NdFeB permanent magnets sintered at different temperatures after heat treatment at 1050℃ 960℃烧结时, 主相晶粒均匀合适, 孔洞和颗粒状富钕相较少, 组织致密, 此温度为最佳的烧结温度. 980℃烧结...磁性能的影响 Fig.2 Effect of SPS sintering temperatures on magnetic properties of SPS NdFeB permanent magnets after heat treatment at 1050℃ 图3 SPS烧结温度对经1050℃热处理的SPS NdFeB永磁材料密度的影响 Fig.3......
