Ti6Al4V表面Al_2O_3/MoS_2涂层的阴极等离子电解沉积及性能
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摘要
利用阴极等离子电解沉积技术(CPED)在Ti6Al4V表面制备了Al2O3/Mo S2减磨耐蚀复合涂层。利用XRD、SEM、EDS等检测手段分析了复合涂层的形貌、物相及元素分布。结果表明,涂层表面呈多孔状,厚度为100μm,由α-Al2O3、γ-Al2O3与Mo S23相组成。涂层与基体结合强度达35 N。与Ti6Al4V相比,该涂层的摩擦系数降低了1/3,腐蚀电位显著提高,腐蚀电流密度下降,有效减缓了基体的腐蚀速率。
Al2O3/ MoS2 composite coatings on Ti6Al4 V alloy substrate were prepared by cathodic plasma electrolytic deposition process( CPED). The morphology,structure and phase composition of the coatings were analyzed by SEM,EDS analysis and XRD. The results show that the porous coatings with the thickness of about 100 μm are mainly composted of α-Al2O3、γ-Al2O3 and Mo S2 phases. The critical load of the coatings peeled off from the substrate is 35 N by scratch test. The friction coefficient of the coatings derived from the friction test is deduced by 1 /3 of that of Ti6Al4 V substrate. Much higher corrosion resistance of the coatings is also proved by the measurement of the polarization curves of Ti6Al4 V alloy and the Al2O3/ Mo S2 coatings.
Al2O3/ MoS2 composite coatings on Ti6Al4 V alloy substrate were prepared by cathodic plasma electrolytic deposition process( CPED). The morphology,structure and phase composition of the coatings were analyzed by SEM,EDS analysis and XRD. The results show that the porous coatings with the thickness of about 100 μm are mainly composted of α-Al2O3、γ-Al2O3 and Mo S2 phases. The critical load of the coatings peeled off from the substrate is 35 N by scratch test. The friction coefficient of the coatings derived from the friction test is deduced by 1 /3 of that of Ti6Al4 V substrate. Much higher corrosion resistance of the coatings is also proved by the measurement of the polarization curves of Ti6Al4 V alloy and the Al2O3/ Mo S2 coatings.
引文
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[2]Tiwari S K,Sahu R K,Pramanick A K,et al.Development of conversion coating on mild steel prior to sol gel nanostructured Al2O3coating for enhancement of corrosion resistance[J].Surface and Coatings Technology,2011,205(21/22):4960-4967.
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[4]毛杰,邓春明,邝子奇,等.超音速等离子喷涂Al2O3涂层制备及工艺优化[J].材料热处理学报,2015,36(1):143-146.MAO Jie,DENG Chun-ming,KUANG Zi-qi,et al.Preparation and process optimization of Al2O3coatings deposited by supersonic plasma spraying technique[J].Transactions of Materials and Heat Treatment,2015,36(1):143-146.
[5]赵广宏,何业东.镀液成分对等离子电沉积镍镀层的影响[J].材料热处理学报,2012,33(9):95-100.ZHAO Guang-hong,HE Ye-dong.Effects of composition in plating solution on Ni coatings prepared by plasma electrodeposition[J].Transactions of Materials and Heat Treatment,2012,33(9):95-100.
[6]赵广宏,何业东.脉冲参数对等离子电沉积镍镀层结构和性能的影响[J].材料热处理学报,2012,33(8):115-120.ZHAO Guang-hong,HE Ye-dong.Influences of pulse parameters on microstructure and properties of Ni-coatings prepared by plasma electrodeposition[J].Transactions of Materials and Heat Treatment,2012,33(8):115-120.
[7]杨建明,马超,陈劲松,等.乙醇环境下阴极等离子体电解沉积镍[J].有色金属工程,2014,4(3):41-44.YANG Jian-ming,MA Chao,CHEN Jin-song,et al.Deposition of Ni coating by cathodic plasm electrolysis in ethanol environment[J].Nonferous Materals Engineering,2014,4(3):41-44.
[8]Zong C Y,Li H D,Li C.Cathodic plasma electrolysis in 1-propanol solutions for preparation of submicron diamond particles[J].Electrochimica Acta,2013,105:612-617.
[9]Wu J,Xue W B,Wang B.Characterization of carburized layer on T8 steel fabricated by cathodic plasma electrolysis[J].Surface&Coatings Technology,2014,245:9-15.
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[12]Liu C J,Zhao Y C,Chen Y S,et al.Surface modification of magnesium alloy via cathodic plasma electrolysis and its influence on corrosion resistance and cytocompatibility[J].Materials Letters,2014,132:15-18.
[13]韩伟,何业东,薛润东,等.离子体电解阴极沉积Y2O3陶瓷涂层[J].材料热处理学报,2005,26(4):83-86.HAN Wei,HE Ye-dong,XUE Run-dong,et al.Y2O3coatings deposited by cathodic plasma electrolysis[J].Transactions of Materials and Heat Treatment,2005,26(4):83-87.
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