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Preparation Technology and Performances of Zn-Cr Coating on Sintered NdFeB Permanent Magnet Chen Ling1,Yu Shengxue1 (1.Department of Applied Chemistry, Yanshan University, Qinhuangdao 066004, China) Abstract:Zn-Cr coating was prepared on the surface of sintered NdFeB permanent magnet samples and preparation parameters were established.The anticorrosive property of Zn-Cr coating on NdFeB......
Effect of Annealing on the Magnetism of the Sintered NdFeB Magnet HUANG Jian-guo1,ZHENG Hua-jun1,MA Chun-an1 (1.College of Chemical Engineering and Material Science, Zhejiang University of Technology, Hangzhou, China) 摘要:This paper deals with the effect of annealing on the magnetism of the sintered NdFeB magnet with a composition of Nd30B5.1Dy1.2A10.6Nb0.7Fe62.4. Microstructural investigations......
THE EFFECT OF Mo ADDITION ON COERCIVITY OF NdFeB SINTERED MAGNET PREPARED BY BLENDING METHOD J.Q.Zhou1,M.G. Zhang1 (1.Department of Materials Engineering, Taiyuan University of Science... boundaries. Experiments show that after the NdFeB magnet is sintered at 1273K and annealed at 873K, the added Mo element could prevent the equilibrium transformation between the main phase and Nd-rich......
Microstructure and corrosion resistance of sintered NdFeB magnet modified by intergranular additions of MgO and ZnO SHEN Liping1,SHAN Aidang2,LIU Qiongzhen2,MO Wenjian2,ZHANG Lanting2,WU... 200240, China;3.Advanced Research Laboratory, Hitachi Ltd., Hitachi-shi, Ibaraki-ken 319-1292, Japan) Abstract:Microstructure and corrosion resistance of sintered Nd15Dy1.2Fe77Al0.8B6 and Nd22Fe71B7......
(CV) and electrochemical impedance spectroscopy (EIS) techniques. Results revealed that the corrosion resistance of the NdFeB film was better than that of the traditional sintered NdFeB magnet... of sintered NdFeB magnets [J]. Journal of Rare Earths, 2009, 27(6): 1003-1007. [3] SONG Lai-zhou, YANG Zhi-yong. Corrosion resistance of sintered NdFeB permanent magnet with Ni-P/TiO2 composite film [J......
Cathode electrophoretic technology for bonded NdFeB permanent magnet CHEN Gang(陈 刚)1, 2, YANG Xiao-lin(杨小玲)2, 3, GAO Dan-ying(高淡英)2,NI Jian-sen(倪建森)1, XU Hui(徐 晖)1 , ZHOU Bang-xin(周邦新)1 1... and Technology, Shanghai 201800, China Received 20 April 2006; accepted 30 June 2006 Abstract: The bonded NdFeB permanent magnet was painted by cathode electrophoretic technology. The effect of technological......
of Nd33.5Dy0.99Febal.Al0.52Cu0.1B1.15 (%, mass fraction) was fabricated by powder metallurgy. The effects of Dy, Al and Cu additions on the microstructure and magnetic properties of sintered NdFeB magnet were... rectangularity. It is found that the sintered NdFeB magnet has relatively high magnetic performance of Br=12.17kGs, jHc=13.52kOe and (BH)max=34.71MGOe. The sintered NdFeB sample was examined by magnetic force......
of Advanced Functional Materials, Ministry of Education, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100022) Abstract: A new type of NdFeB magnet with high... along the boundaries of the NdFeB grains. Under optimum processing conditions, the SPS NdFeB magnet possesses the best magnetic properties with remanence of 1.351T, coercive force of 674.4kA/m......
Research of Microstructure and Anticorrosion Property of Zn-Cr Coating on Sintered NdFeB Permanent Magnet陈玲,韩婧,于升学摘 要:Zn-Cr coating was obtained on the surface of sintered NdFeB permanent magnet by immersing special solution and baked at 290~310 ℃ for 30 min. The anticorrosive property of the coating was studied by 3.5% salt solutions immersion test......
Study on Key Techniques for Producing High Performance NdFeB Sintered Permanent Magnets 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......