铝阳极氧化膜绿色封闭工艺
GREEN SEALING METHOD OF ANODIC ALUMINA FILMS
摘 要
探索了新的不含有害物质的铝合金阳极氧化膜绿色封闭技术；新方法使用了铈盐化学处理和钼盐溶液电化学处理相结合的工艺.对比了不同封闭方法对L3铝合金阳极氧化膜在NaCl溶液中耐蚀性的影响,包括氟化镍封闭,重铬酸钾封闭和铈-钼盐封闭.利用动电位极化法研究了封闭后阳极氧化膜的腐蚀行为.利用扫描电子显微镜(SEM)观察了封闭后阳极氧化膜的表面形貌和成分.结果表明铈-钼盐封闭工艺可以为铝合金阳极氧化膜在NaCl溶液中提供较高的耐蚀性.
阳极氧化
封闭
Aluminum alloy L3
Anodic film
Sealing
Abstract
A green sealing method of anodic films on aluminum alloy L3 was studied to eliminate the toxic materials.The new process uses chemical treatments in cerium solution and an electrochemical treatment in a molybdate solution.Potentiodynamic polarization was used to study the influences of sealing methods on the corrosion behavior of anodic films in NaCl solutions.The Ce-Mo sealing made the surface structure and morphology of anodic films uniform and compact.Ce and Mo produced a cooperative effect to improve the corrosion resistance of anodic films.Anodic films sealed by Ce-Mo provided high corrosion resistance in NaCl solutions.
中图分类号 TG178
所属栏目 应用技术
基金项目 国家自然科学基金资助项目(10472049)
收稿日期 2006/9/14
修改稿日期
网络出版日期
作者单位点击查看
引用该论文: TIAN Lian-peng,ZUO Yu,SHI Hui-Ji. GREEN SEALING METHOD OF ANODIC ALUMINA FILMS[J]. Corrosion & Protection, 2007, 28(8): 414～416
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参考文献
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【6】Mansfeld F,Wang Y.Development of ‘stainless’ aluminum alloys by surface modification[J].Materials Science and Engineering A,1995,198:51-61.
【2】Zuo Y,Zhao P,Zhao J,et al.The influences of sealing methods on corrosion behavior of anodized aluminum alloys in NaCl solution[J].Surface and Coating Technology,2003,166:237-242.
【3】Suay J J,Gimenez E.Characterization of anodized and sealed aluminium by EIS[J].Corrosion Science,2003,45:611-624.
【4】Snogan F,Blanc C,Mankowski G,et al.Characterisation of sealed anodic films on 7050 T74 and 2214 T6 aluminium alloys[J].Surface and Coatings Technology,2002,154(1):94-103.
【5】Sidhu P,Garg M L,Dhawan D K.Protective role of zinc in nickel induced hepatotoxicity in rats[J].Chemico-Biological Interactions,2004,150(2):199-209.
【6】Mansfeld F,Wang Y.Development of ‘stainless’ aluminum alloys by surface modification[J].Materials Science and Engineering A,1995,198:51-61.
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