陈正涵,孙晓峰,李占明,刘小桐,史玉鹏

• 1:装甲兵工程学院装备维修与再制造工程系

摘要(Abstract)：

采用冷喷涂技术在镍铝青铜9442合金表面制备了镍铝青铜涂层,并对涂层进行激光重熔处理。使用SEM、OM、EDS、XRD、显微硬度测试仪,多功能表面性能测试仪、电化学工作站、磁致伸缩空泡腐蚀试验机分析了涂层的组织形貌、显微硬度、摩擦学性能、耐腐蚀性能以及抗空泡腐蚀性能。结果表明:激光重熔后涂层变得致密,结合方式转变为冶金结合;涂层平均显微硬度提高到354.4 HV0.2;激光重熔态涂层的自腐蚀电位Ecorr比基体提高了9.2%,比冷喷涂态涂层提高了18.2%,耐腐蚀性能优于基体和冷喷涂态涂层;激光重熔态涂层摩擦系数0.141,低于基体和冷喷涂态涂层,减磨性能提高;经过12 h空泡腐蚀后,激光重熔态涂层比铸态镍铝青铜基体的质量损失减少了约46.0%。

关键词(KeyWords)： 冷喷涂;激光重熔;镍铝青铜;摩擦学;腐蚀;性能

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 陈正涵,孙晓峰,李占明,刘小桐,史玉鹏

DOI: 10.13289/j.issn.1009-6264.2017-0256

参考文献(References)：

• [1]吕玉廷,王立强,毛建伟,等.镍铝青铜合金(NAB)的研究进展[J].稀有金属材料与工程,2016,45(3):815-820.LYu-ting,WANG Li-qiang,MAO Jian-wei,et al.Recent advances of nickel-aluminum bronze(NAB)[J].Rare metal Materials and Engineering,2016,45(3):815-820.
• [2]罗芹,吴忠,秦真波,等.镍铝青铜的表面处理技术及研究进展[J].材料导报,2015,29(1):15-21.LUO Qin,WU Zhong,QIN Zhen-bo,et al.Surface treatment technology and progress of nickel aluminum bronze[J].Material Review,2015,29(1):15-21.
• [3]宋德军,胡光远,卢海,等.镍铝青铜合金的应用与研究现状[J].材料导报,2007,21(4):450-459.SONG De-jun,HU Guang-yuan,LU Hai,et al.Survey of progress on the research and practice of nickel-aluminum bronze[J].Materials Review,2007,21(4):450-459.
• [4]卜恒勇,卢晨.冷喷涂技术的研究现状及进展[J].材料工程,2010(1):94-98.BU Heng-yong,LU Chen.Research and development of cold spray technology[J].Journal of Material Engineering,2010(1):94-98.
• [5]Klnkov S V,Kosarev V F,Sova A A,et al.Deposition of multi component coatings by cold spray[J].Surface&Coatings Technology,2008,202:5858
• [6]Tobias Schmidt,Frank Gartner,Hamid Assadi,et al.Development of a generalized parameter window for cold spray deposition[J].Acta Materialia,2006,54:729-742.
• [7]王东生,田宗军,陈志勇,等.Ti Al合金表面激光重熔等离子喷涂MCr Al Y涂层研究[J].材料工程,2009(7):72-78.WANG Dond-sheng,TIAN Zong-jun,CHEN Zhi-yong,et al.Study on laser remelting MCr Al Y coating prepared by plasma spraying on Ti Al alloy surface[J].Material Engineering,2009(7):72-78.
• [8]洪永昌,王明辉.激光重熔和时效处理的镍基合金热喷焊层组织和性能的研究[J].机械工程学报,2012,48(10):75-81.HONG Yong-chang,WANG Ming-hui.Research of microstructure and properties of Ni-based alloy hot sprayed-welding layers by laser remelted and aging treatment[J].Journal of Mechanical Engineering,2012,48(10):75-81.
• [9]Ge Y Q,Wang W X,Wang X.Study on laser surface remelting of plasma-sprayed Al-Si/1wt%nano-Si3N4coating on AZ31B magnesium alloy[J].Applied Surface Science,2013,273:122-127.
• [10]Poza P,Múnez C J,Garrido-Maneiro M A,et al.Mechanical properties of Inconel 625 cold-sprayed coatings after laser remelting.depth sensing indentation analysis[J].Surface&Coatings Technology 2014,243:51-57.
• [11]Nan K,Christophe Verdy,Pierre Coddet,et al.Effects of laser remelting process on the microstructure,roughness and microhardness of in-situ cold sprayed hypoeutectic Al-Si coating[J].Surface&Coatings Technology,2017,38:355-359.
• [12]王理林林鑫王永辉,等.激光重熔熔池凝固组织的实时观察研究[J].金属学报,2015,51(4):492-298.WANG Li-lin,LIN Xin,WANG Yong-hui,et al.Real-time observation of solidification microstructure in laser remelting pool[J].Acata Metallurgica Sinica,2015,51(4):492-298.
• [13]查吉利,龙思远,吴星宇,等.压铸AZ91D镁合金激光重熔区氢气孔的形成机制[J].材料工程,2013,6:29-34.ZHA Ji-li,LONG Si-yuan,WU Xing-yu,et al.Formation mechanism of hydrogen pore in die cast AZ91D magnesium alloylaser-remelting zone[J].Material Engineering,2013:29-34.
• [14]姚军.AZ91D镁合金激光熔覆与重熔层组织特征及其性能研究[D].长春:吉林大学,2007.YAO Jun.Study on microstructure characteristic and properties of laser cladding and remelting on surface of AZ91D magnesium alloy[D].Changchun:University of Jilin,2007
• [15]候文英,高琳.摩擦磨损与润滑[M].北京:机械工业出版社,2012:47-60.

文章评论(Comment)：