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材料研究学报  2007, Vol. 21 Issue (5): 496-500    
  论文 本期目录 | 过刊浏览 |
铜合金表面激光原位自生W2C增强镍基涂层
刘芳;刘常升;陈岁元;陶兴启
引用本文:

刘芳; 刘常升; 陈岁元; 陶兴启 . 铜合金表面激光原位自生W2C增强镍基涂层[J]. 材料研究学报, 2007, 21(5): 496-500.

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摘要: 使用脉冲Nd:YAG固体激光器在铜合金表面激光熔覆添加W和C的镍基合金(GH-01)粉末,研究了W2C硬质相在镍基涂层中的原位自生增强机制.用扫描电镜表征和分析了涂层的显微组织和微区成分,用显微硬度计和X-ray衍射仪分析了涂层的显微硬度变化规律及相关的相组成. 结果表明:激光原位反应使镍基涂层组织内原位生成了弥散分布的花瓣状、块状以及柱状的W2C颗粒,涂层的显微硬度达到了838 HV, 是铜基体的8倍. 碳化钨的原位生成不但实现了对镍基涂层的强化,而且抑制了裂纹的产生.
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收稿日期: 1900-01-01     
1 D.W.Zeng,C.S.Xie,M.L.Hu,A.H.Wang,W.L.Song,In situ laser synthesis of Co/Cu composite coating on cop- per substrate and its microstructural evolution,Surface & Coatings Technology,200(12-13),4065(2006)
2 M.J.Tobar,C.Alvarez,J.M.Amado,G.Rodriguez, A.Yanez,Morphology and characterization of laser clad composite NiCrBSi-WC coatings on stainless steel, Surface & Coatings Technology,200(22-23),6313(2006)
3 H.C.Man,S.Zhang,F.T.Cheng,X.Guo,In situ formation of a TiN/Ti metal matrix composite gradient coating on NiTi by laser cladding and nitriding,Surface & Coatings Technology,200(16-17),4961(2006)
4 G.Dehm,B.Medres,L.Shepeleva,Microstructure and tri- bological properties of Ni-based claddings on Cu sub- strates,Wear,225-229(1),18(1999)
5 G.Dehm,M.Bamberger,Laser cladding of Co-based hard- facing on Cu substrate,Journal of Materials Science, 37(24),5345(2002)
6 W.W.Dulley,Laser Processing and Analysis of Materials (New York and London,Plenum press,1983)p.71
7 S.Sun,Y.Durandet,M.Brandt,Parametric investigation of pulsed Nd:YAG laser cladding of stellite 6 on stain- less steel,Surface and Coatings Technology,194(2-3), 225(2005)
8 E.Toyserkani,A.Khajepour,S.Corbin,Laser Cladding,1, (United States of America,CRC Press,2005)p.214
9 G.J.Jiang,W.L.Li,H.R.Zhuang,Synthesis of tungsten carbide/nickel composites by the field-activated com- bustion method,Materials Sciences and Engineering A, 354(1-2),351(2003)
10 Y.Zhang,M.L.Zhong,W.J.Liu,WC/Ni cemented carbide coating and its wear resistance synthesized by laser pow- der feeding cladding,Heat Treatment of Metals,30(11), 1(2005) (张宇,钟敏霖,刘文今,迭粉激光熔覆合成制备WC/Ni硬质合金涂层及其耐磨性,金属热处理,30(11),1(2005))
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