烧结NdFeB永磁体耐蚀涂层的研究进展
Research Progress of Anticorrosion Coatings for Sintered NdFeB Permanent Magnet
摘 要
提高烧结NdFeB磁体的耐腐蚀性能一直是该领域研究的热点之一.添加金属元素和涂覆常规镀层虽然有效,但并未很好地解决NdFeB磁体耐腐蚀性差的难题.本文对常规涂层用于烧结NdFeB永磁体防腐蚀的现状进行了分析,提出以化学镀Ni-P镀层为过渡层,采用化学镀/溶胶-凝胶复合法在NdFeB磁体表面形成Ni-P/TiO2复合膜,以提高烧结NdFeB磁体耐蚀性能,拟为研发新型的烧结NdFeB磁体涂层提供参考.
Ni-P/TiO2复合膜
耐蚀涂层
耐蚀性
sintered NdFeB permanent magnet
NiP/TiO2 composite film
anticorrosion coating
corrosion resistance
Abstract
Many researches have focused on improving the anticorrosion performance of sintered NdFeB magnet.Adding metal elements and plating conventional coatings could not alleviate the corrosion of the sintered NdFeB magnet satisfyingly.The anticorrosion status of the conventional coatings on the sintered NdFeB magnet is analyzed.Using Ni-P coating as the interlayer,the NiP/TiO2 composite films on NdFeB magnet could be prepared by the electroless plating nickel and sol-gel technique.
中图分类号 TG174.44
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收稿日期 2007/11/16
修改稿日期 2007/12/4
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引用该论文: LIN Wan-zhou,LI Xiang-yang. Research Progress of Anticorrosion Coatings for Sintered NdFeB Permanent Magnet[J]. Corrosion & Protection, 2009, 30(1): 22～24
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参考文献
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【2】Ma Y G,Li R S,Yang Z,et al.Effect of additive element (Cu,Zr,Al) on morphological and magnetic properties of NdFeB thin film with perpendicular magnetic anisotropy[J].Materials Science and Engineering B,2005,117(3):287-291.
【3】Sinnecker E H C P,Ferrara E,Tiberto P,et al.Magnetic properties of Ga substituted Nd-Fe-B composite[J].Journal of Magnetism and Magnetic Materials,1999,196/197:291-292.
【4】Kronmüller H,Schrefl T.Interactive and cooperative magnetization processes in hardmagnetic materials[J].Journal of Magnetism and Magnetic Materials,1994,129(1):66-71.
【5】Thanassis Speliotis,Dimitris Niarchos,Vassil Skumryev,et al.Effect of post deposition annealing on the hysteresis loops of sputtered NdFeB films[J].Journal of Magnetism and Magnetic Materials,2004,272/276:877-879.
【6】E1-Moneim A A,Gerbert A,Muhlemann,et al.The influence of Co and Ga additions on the corrosion behaviour of nanocrystalline NdFeB magnets[J].Corrosion Science,2002,44(8):1857-1874.
【7】Saliba-Silva A,Faria R N,Baper M A,et al.Improving the corrosion resistance of NdFeB magnets:an electrochemical and surface analytical study[J].Surface and Coatings Technology,2004,185(2/3):321-328.
【8】Liu C,Leyland A,Bi Q,et al.Corrosion resistance of multi-layered plasma-assisted physical vapour deposition TiN and CrN coating[J].Surface and Coatings Techndogy,2001,141(2/3):164-173.
【9】Hodgson S N B,Hoggarth C G,Davies H A,et al.Protection of NdFeB magnets by ultra-thin sol-gel derived films[J].Journal of Materials Processing Technology,1999,92/93:518-524.
【10】Shan Guan,Bradley J.Nelson.Fabrication of hard magnetic microarrays by electroless codeposition for MEMS actuators[J].Sensors and Actuators A,2005,118(2):307-312.
【11】Guojin Lu,Giovanni Zangari.Corrosion resistance of temary Ni-P based alloys in sulfuric acid solution[J].Electrochimica Acta,2002,47(18):2969-2979.
【12】Allen Bai,Po-Yao Chuang,Chi-Chang Hu.The corrosion behavior of Ni-P depositions with high phosphorous contacts in Brine media[J].Materials Chemistry and Physics,2003,82(1):93-100.
【13】袁学韬,赵 晴.NdFeB永磁材料防腐蚀进展[J].表面技术,2004,33(4):9-12.
【14】谢原寿,柳全丰,单强虹.Nd-Fe-B粉末合金的多层电镀防护技术[J].材料保护,1998,31(6):5-8.
【15】Dobrza′nski L A,Drak M,Trzaska J.Corrosion resistance of the polymer matrix hard magnetic composite materials Nd-Fe-B[J]. Journal of Materials Processing Technology,2005,164/165:795-804.
【16】Park Y S,Kim T H,Lee M H,et al.Study on the effect of ultrasonic waves on the characteristics of electroless nickel deposits from an acid bath[J].Surface Coatings and Technology,2002,153(2/3):245-251.
【17】胡建文,马静,刁美艳,等.钕铁硼烧结永磁体复合化学镀工艺的研究[J].材料保护,2004,37(9):25-26.
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【19】Zhong Chen,Alice Ng,Jianzhang Yi,et al.Multi-layered electroless Ni-P coatings on powder-sintered Nd-Fe-B permanent magnet[J].Journal of Magnetism and Magnetic Materials 2006,302(1):216-222.
【20】Kim Y B,Cho S H,Kim H T,et al.Effects of buffer layer temperature on the magnetic properties of NdFeB thin magnets[J].Journal of Magnetism and Magnetic Materials,2004,272/276:1917-1919.
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【22】Laizhou Song,Shizhe Song,Zhiming Gao.Formation of TiO2 modified film on carbon steel[J].Journal of Material Science and Technolohy,2004,20(5):599-601.
【23】Laizhou Song,Jing Zhao,Xiuli Wang.Modification and anticorrosion property of carbon steel with TiO2 film[J].Journal of Iron and Steel Research International,2005,12(6):37-41.
【24】Song L Z,Song S Z,Zhao J.Preparation and corrosion resistance of NiP/TiO2 composite film on carbon steel in sulfuric acid solution[J].Acta Metallurgica Sinica (English Letters),2006,19(2):117-123.
【25】林万舟,宋来洲.TiO2复合膜的耐蚀性能研究[J].腐蚀与防护,2003,24(1):9-12.
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