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4种涂层对NdFeB磁体耐腐蚀性能和磁性能的影响
引用本文:唐杰,魏成富,赵导文,林红,徐伟. 4种涂层对NdFeB磁体耐腐蚀性能和磁性能的影响[J]. 材料保护, 2009, 42(5)
作者姓名:唐杰  魏成富  赵导文  林红  徐伟
作者单位:1. 绵阳师范学院化学系,四川,绵阳,621000
2. 绵阳西磁磁电有限公司,四川,绵阳,621000
3. 四川嘉宏磁材公司,四川,绵阳,621000
基金项目:四川省教育厅重点项目,四川省教育厅青年项目,绵阳市科技局重点项目 
摘    要:NdFeB耐蚀性能差,对其实施涂层保护可以提高其耐蚀性能,但又影响到磁性能.对比研究了Ni,Zn,环氧树脂,PARYLENE-C涂层对NdFeB磁体在3种溶液中对磁性能的影响.结果表明:在酸、碱、盐环境中,高分子材料涂层对磁体的保护效果最好,环氧树脂涂层相对差些,Ni涂层次之,Zn涂层最差;Ni涂层和Zn涂层对样品的磁性能影响不大,但环氧树脂涂层使其BHmax减少了12.66 kJ/m3;高分子材料涂层使其BHmax减少了31.68 kJ/m3,且使Hcj增加了41.38 kA/m.因此,为保证其性能和正常使用,应根据不同的使用环境来选择适当的涂层.

关 键 词:烧结钕铁硼磁体  表面处理  涂层  磁性能  耐蚀性

Effect of Several Coatings on Magnetic Properties and Corrosion Resistance of NdFeB Magnet
TANG Jie,WEI Cheng-fu,ZHAO Dao-wen,LIN Hong,XU Wei. Effect of Several Coatings on Magnetic Properties and Corrosion Resistance of NdFeB Magnet[J]. Journal of Materials Protection, 2009, 42(5)
Authors:TANG Jie  WEI Cheng-fu  ZHAO Dao-wen  LIN Hong  XU Wei
Affiliation:TANG Jie1,WEI Cheng-fu1,ZHAO Dao-wen2,LIN Hong3,XUWei1(1.Department of Chemistry,Mianyang Normal University,Mianyang 621000,China,2. Mianyang Xici Magnetoelectricity Company Ltd.,3 Sichuan Jiahong Magnetic Material Company,China)
Abstract:The effects of several coat-ings including Ni coating, Zn coating, epoxy resin coating, and PARYLENE-C polymeric coating on the magnetic properties and corrosion resistance of sintered NdFeB magnet in acid, alkaline, and salt solutions were comparatively investigated. It was indica-ted that polymeric coating and epoxy resin coating had good pro-tection to sintered NdFeB magnet in acid, alkaline, and salt solu-tions. Ni coating had fair protection to the magnet, while Zn coat-ing had poor protection to the m...
Keywords:sintered NdFeB magnet  surface treatment  coating  magnetic properties  corrosion resistance  
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