铝合金阳极氧化膜防护性能及失效规律研究
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摘要
目的研究不同腐蚀环境条件下铝合金阳极氧化膜层的防护作用及失效规律。方法采用中性盐雾、酸性盐雾试验方法进行加速试验,对无划线试样腐蚀外观和附着力以及有划线试样的腐蚀形貌等进行检测和考核分析。结果获得了4种铝合金材料阳极氧化膜层在不同试验环境条件下的防护性能、腐蚀失效、附着力变化以及抗腐蚀扩展性能等试验数据。结论铝合金材料类型对未封闭处理的阳极氧化膜的耐腐蚀扩展性能影响明显。封闭处理能够提高铝合金阳极氧化膜的综合防护性能。
Objective To study the protective effect and failure behavior of anodic oxidation film on aluminum alloy in different corrosive environments. Methods Accelerated tests were conducted by neutral salt spray test(NSS) and copper-accelerated acetic acid salt spray(CASS). The corrosion morphology of scratched samples and the corrosion appearance and adhesion of non-scratched samples were examined and analyzed. Results Protective performance, corrosion failure, changes in adhesion and anti-corrosion propagation performance of anodic oxide coatings of four kinds of aluminum alloy materials in different test environments were obtained. Conclusion Types of aluminum alloy have significant effects on anti-corrosion propagation performance of the unsealed anodic oxide coatings. Sealing treatment can significantly improve the comprehensive protective properties of anodic oxide film on aluminum alloy.
Objective To study the protective effect and failure behavior of anodic oxidation film on aluminum alloy in different corrosive environments. Methods Accelerated tests were conducted by neutral salt spray test(NSS) and copper-accelerated acetic acid salt spray(CASS). The corrosion morphology of scratched samples and the corrosion appearance and adhesion of non-scratched samples were examined and analyzed. Results Protective performance, corrosion failure, changes in adhesion and anti-corrosion propagation performance of anodic oxide coatings of four kinds of aluminum alloy materials in different test environments were obtained. Conclusion Types of aluminum alloy have significant effects on anti-corrosion propagation performance of the unsealed anodic oxide coatings. Sealing treatment can significantly improve the comprehensive protective properties of anodic oxide film on aluminum alloy.
引文
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[15]MC CAFFERTY E.Acid-base Effects in Polymer Adhesion at Metal Surfaces[J].Adhesiono Sci Tech,2002,16(3):239.
[2]李龙,吕金明,严安,等.铝合金装甲材料的应用及发展[J].兵器材料科学与工程,2017,(6):105-113.
[3]庞彦国,王祝堂.铝及铝合金在高新兵器中的应用[J].轻合金加工技术,2018,(6):1-7.
[4]李长虹.5A06铝合金表面处理工艺缺陷引起的装备环境适应性问题[J].环境适应性与可靠性,2012(1):19-21.
[5]黄领才,刘慧从,谷岸,等.沿海环境下服役飞机铝合金零件的表面涂层破坏与腐蚀[J].航空学报,2009,30(6):1144-1149.
[6]苏艳,李凌杰,舒畅,等.高强铝合金海洋大气环境剥层腐蚀研究[J].装备环境工程,2010,7(6):18-182.
[7]鲁远曙,左卫,王玉龙.海洋性气候电子设备铝合金结构腐蚀防护研究[J].装备环境工程,2008,5(3):71-75.
[8]钱建才,许斌,邹洪庆,等.2A12铝合金硬质阳极氧化及膜层性能研究[J].表面技术,2014,43(5):37-40.
[9]赵旭辉.铝阳极氧化膜的电化学阻抗特征研究[D].北京:北京化工大学,2005.
[10]钱建才,邹洪庆,许斌,等.电解液对2A12铝合金硬质阳极氧化膜层性能的影响[J].表面技术,2015,44(11):40-45.
[11]LEGGHE E,ARAGON E.Correlation between Water Diffusion and Adhesion Loss:Study of an Epoxy Primer on Steel[J].Progress in Organic Coatings,2009,66:276-280.
[12]潘莹.张三平.周建龙,等.有机涂层的屏蔽作用及其影响因素[J].腐蚀与防护,2010,31(9):741-744.
[13]杨丽霞.张三平.林安,等.有机涂层渗水率及金属界面腐蚀的研究进展[J].材料保护,2001,34(10):28-30.
[14]翟兰兰.凌国平.高分子涂层与金属的附着力及其研究进展[J].材料导报,2005,19(7):79-81
[15]MC CAFFERTY E.Acid-base Effects in Polymer Adhesion at Metal Surfaces[J].Adhesiono Sci Tech,2002,16(3):239.