通过在特定的电参数下改变负向脉宽,在Mg-Gd-Y合金表面制备了不同的微弧氧化膜.利用扫描电镜和电化学方法研究氧化膜的显微组织和电化学行为.结果表明:负向脉宽对于微弧氧化膜的致密性具有重要影响,适当的负向脉宽可以有效地提高膜层致密性,而稍低或者过高的负向脉宽都会降低氧化膜的致密性,从而降低涂层的耐腐蚀性.
参考文献
| [1] | Aghion E,Bronfin B,Eliezer D.The role of the magnesium industry in protecting the environment[J].J.Mater.Process.Technol.,2001,117(3):381 |
| [2] | Liang S Q,Guan D K,Tan X P.The relation between heat treatment and corrosion behavior of Mg-Gd-Y-Zr alloy[J].Mater.Des.,2011,32(3):1194 |
| [3] | Liu X B,Shan D Y,Song Y W,et al.Influence of casting module on corrosion behavior of Mg-11Gd-3Y alloy[J].Trans.Nonferrous Met.Soc.China,2011,21(4):903 |
| [4] | 常建伟,郭兴伍,彭立明等.250℃时效处理对Mg-10Gd-3Y-0.4Zr稀土镁合金腐蚀行为的影响[J].腐蚀科学与防护技术,2009,21(2):88 |
| [5] | Gray J E,Luan B.Protective coatings on magnesium and its alloys-a critical review[J].J.Alloys Compd.,2002,336(1-2):88 |
| [6] | 张红霞,张伟,李月洁等.用优化的Na2SiO3电解液制备的镁合金的陶瓷膜的防护性能[J].腐蚀科学与防护技术,2008,20(4):268 |
| [7] | 马颖,冯君艳,马跃等.镁合金微弧氧化膜耐蚀性表征方法的对比研究[J].中国腐蚀与防护学报,2010,30(6):442 |
| [8] | 王艳华,王佳,张际际.电流密度对AZ91D镁合金微弧氧化膜性能的影响[J].中国腐蚀与防护学报,2005,25(6):332 |
| [9] | Yerokhin A L,Nie X,Layland A,et al.Plasma electrolysis for surface engineering[J].Surf.Coat.Technol.,1999,122(2-3):73 |
| [10] | Arrabal R,Matykina E,Hashimoto T,et al.Characterization of AC PEO coatings on magnesium alloys[J].Surf.Coat.Technol.,2009,203(15):2207 |
| [11] | Chang L R,Cao F H,Cai J S,et al.Influence of electric parameters on MAO of AZ91D magnesium alloy using alternative square-wave power source[J].Trans.Nonferrous.Met.Soc.China,2011,21(2):307 |
| [12] | Bonora P L,Deflorian F,Fedrizzi L.Electrochemical Impedance Spectroscopy as a tool for investigating underpaint corrosion[J].Electrochim.Acta,1996,41(7/8):1073 |
| [13] | Jorcin J B,Orazem M E,Pebere N,et al.CPE analysis by local electrochemical impedance spectroscopy[J].Electrochim.Acta,2006,51(8/9):1473 |
| [14] | Sundararajan G,Krishna L R.Mechanisms underlying the formation of thick alumina coatings through the MAO coating technology[J].Surf.Coat.Technol.,2003,167(2/3):269 |
| [15] | Jin F Y,Chu P K,Xu G D,et al.Structure and mechanical properties of magnesium alloy treated by micro-arc discharge oxidation using direct current and high-frequency bipolar pulsing modes[J].Mater.Sci.Eng.,A435～436(1/2):123 |
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