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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......
Study of Technology of Stripping Nickel Coating on NdFeB Permanent Magnet Rao Houzeng1,Jiang Longfa1,LI Guohua2,Lin Guanjie1 (1.Department of Environmental and Chemical Engineering, Nanchang... in the solution of stripping the nickel coating on NdFeB permanent magnet on the stripping result were studied systematically.The practical formular contains mainly the oxidant m-O2NC6H4SO3Na, the complex......
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......
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......
(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...]: the appearance of SmCo5 (1-5 samarium cobalt alloy), the occurrence of Sm2Co17 (2-17 samarium cobalt alloy) and the invention of NdFeB. Because of the superior performance of permanent magnet NdFeB......
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......
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......
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 and Technology,Taiyuan 030024, China) Abstract:Alloy modification, accompanying with proper heat treatment, is commonly used to improve the thermal stability of NdFeB magnet. Traditional alloy modification......
Characterization of Microstructure and Magnetic Properties of NdFeB Magnet with Dy, Al and Cu Additions Lü Yousheng1,Chen Yiqing1,Su Yong1,Yi Xiaofei2,Zhou Qingtao1,Xiong Yongfei2,Cheng Wenhao2... 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......
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... resistance resulting from autoclave testing (2×105 Pa of steam pressure, 120 °C) showed that the corrosion rate of NdFeB magnets reduced with the increase of additive amount. Microstructure observation......
