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5A06和2A12铝合金在硫酸-己二酸中阳极氧化行为及膜层电化学性能

刘建华 高庆娜 李英东 李松梅 于美

刘建华, 高庆娜, 李英东, 等 . 5A06和2A12铝合金在硫酸-己二酸中阳极氧化行为及膜层电化学性能[J]. 北京航空航天大学学报, 2015, 41(5): 757-763. doi: 10.13700/j.bh.1001-5965.2014.0330
引用本文: 刘建华, 高庆娜, 李英东, 等 . 5A06和2A12铝合金在硫酸-己二酸中阳极氧化行为及膜层电化学性能[J]. 北京航空航天大学学报, 2015, 41(5): 757-763. doi: 10.13700/j.bh.1001-5965.2014.0330
LIU Jianhua, GAO Qingna, LI Yingdong, et al. Oxidation behavior of 5A06 and 2A12 aluminum alloys in sulfuric-adipic acid and electrochemical property of anodic oxide film[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(5): 757-763. doi: 10.13700/j.bh.1001-5965.2014.0330(in Chinese)
Citation: LIU Jianhua, GAO Qingna, LI Yingdong, et al. Oxidation behavior of 5A06 and 2A12 aluminum alloys in sulfuric-adipic acid and electrochemical property of anodic oxide film[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(5): 757-763. doi: 10.13700/j.bh.1001-5965.2014.0330(in Chinese)

5A06和2A12铝合金在硫酸-己二酸中阳极氧化行为及膜层电化学性能

doi: 10.13700/j.bh.1001-5965.2014.0330
详细信息
    通讯作者:

    刘建华(1957—),男,湖南常德人,教授,liujh@buaa.edu.cn,主要研究方向为腐蚀与防护.

  • 中图分类号: V252

Oxidation behavior of 5A06 and 2A12 aluminum alloys in sulfuric-adipic acid and electrochemical property of anodic oxide film

  • 摘要: 以5A06和2A12铝合金为研究对象,研究了Al-Mg和Al-Cu合金在硫酸-己二酸中阳极氧化行为及其氧化膜的电化学性能,分析合金相对铝合金阳极氧化膜层结构以及耐蚀性的影响.采用场发射扫描电子显微镜(FE-SEM)进行表面形貌观察,采用动电位极化曲线、电化学阻抗谱(EIS)进行膜层的电化学性能评价.结果表明:2A12铝合金恒电压阳极氧化过程中出现两个电流峰值,这说明含铜相的溶解会影响阳极氧化过程;2A12铝合金膜层孔洞不规整,连通现象严重,含铜相的富集促进了氧气的产生,影响了氧化膜的微观结构;相同浸泡时间下,5A06铝合金氧化膜自腐蚀电位更高,自腐蚀电流更低,具有较高的耐蚀性,这是由于Al-Cu合金的孔隙率要比Al-Mg合金高.

     

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出版历程
  • 收稿日期:  2014-06-06
  • 修回日期:  2014-07-03
  • 刊出日期:  2015-05-20

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