为促进2024铝合金的进一步应用,用动电位阳极极化和电化学阻抗方法研究了2024 Al合金阳极氧化膜的结构及其在3.5% NaCl水溶液中的耐蚀性.结果表明,经硫酸阳极氧化的2024 Al合金较未处理基体的腐蚀速度降低了2个数量级以上,表现出相当好的保护性能;用光学显微镜、扫描电镜和透射电镜对阳极氧化膜的形貌观察发现,氧化膜表面平整,孔隙分布均匀,每个孔隙周围多含6个孔隙,也有5和7个孔隙结构,其孔隙尺寸细小,大小在10～30 nm之间.
参考文献
| [1] | Guillaumin V;Mankowski G .Localized corrosion of 2024 T351 aluminium alloy in chloride media[J].Corrosion Science,1999,41:421-438. |
| [2] | Blanc Ch;Mankowski G .Pit propagation rate on the 2024 and 6056 aluminium alloys[J].Corrosion Science,1998,40:411-429. |
| [3] | Blanc C;Lavelle B;Mankowski G .The role of precipitates enriched with copper on the susceptibility to pitting corrosion of the 2024 aluminium alloy[J].Corrosion Science,1997,39:495-510. |
| [4] | Yue TM.;Man HC.;Wu YX. .On the role of CuAl2 precipitates in pitting corrosion of aluminium 2009/SiCW metal matrix composite[J].Journal of Materials Science Letters,2000(11):1003-1006. |
| [5] | Mansfeld F;Wang Y.Corrosion protection of high copper aluminum alloys by surface modification[J].British Corrosion Journal,1994(29):194-200. |
| [6] | Mansfeld F;Kendig M W.Evaluation of anodized aluminum surfaces with electrochemical impedance spectroscopy[J].Journal of the Electrochemical Society,1988(135):828-833. |
| [7] | Mansfeld F;Lin S;Kim S et al.Surface modification of Al alloys and Al-based metal matrix composites by chemical passivation[J].Electrochimica Acta,1989,34(08):1123-1132. |
| [8] | Shimizu K;Kobayashi K;Thompson G E et al.The influence of θ' precipitates on the anodizing behaviour of binary Al-Cu alloys[J].Corrosion Science,1997,39:281-284. |
| [9] | 冯斌;旷亚非;曾凌三 .铝阳极氧化膜在氯化钠溶液中的孔蚀行为(I):氧化膜双层结构与耐孔蚀性能[J].表面技术,1999,28(06):20-22. |
| [10] | Shahid M. .MECHANISM OF FILM GROWTH DURING ANODIZING OF AL-ALLOY-8090/SIC METAL MATRIX COMPOSITE IN SULPHURIC ACID ELECTROLYTE[J].Journal of Materials Science,1997(14):3775-3781. |
| [11] | Lin S;Greene H;Shih H.Corrosion protection of Al/SiC metal matrix composites by anodizing[J].Corrosion,1992(48):61-67. |
| [12] | 贺春林;国玉军;刘常升 等.颗粒增强铝基复合材料阳极氧化膜的耐蚀性[J].功能材料,2001,32(zk):1469-1470. |
| [13] | 《表面处理工艺手册》编审委员会.表面处理工艺手册[M].上海:上海科学技术出版社,1993:212-214. |
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