不同密封方式下阳极氧化2195铝锂合金的腐蚀行为

Q4 Chemical Engineering

腐蚀科学与防护技术 Pub Date : 2014-12-03 DOI:10.11903/1002.6495.2013.347

Ke Yang, L. Song, Yong-lai Chen, Xu-hu Zhang, C. Cai, Jinfeng Li

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引用次数: 1

摘要

采用动电位极化、电化学阻抗谱(EIS)、盐雾试验和磷酸/铬酸溶液浸泡试验研究了封后处理对阳极氧化2195铝锂合金腐蚀行为的影响。分别用沸水、重铬酸钾、硫酸镍和硝酸铈对阳极膜进行后处理。结果表明:经阳极氧化处理的2195铝锂合金的后密封能显著提高其耐腐蚀性能。硝酸铈后处理后的阳极氧化膜的耐蚀性远优于沸水处理，但略低于重铬酸钾和硫酸镍处理。长期喷雾试验结果表明，经重铬酸钾密封处理的2195铝锂合金阳极化后的耐蚀性在4种密封处理中最高。

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Corrosion Behavior of Anodized 2195 Al-Li Alloys with Different Sealing Methods

The influence of post-sealing treatment on corrosion behavior of anodized 2195 Al-Li alloys was studied by potentiodynamic polarization, Electrochemical Impedance Spectroscopy(EIS),salt spray test and immersion test in solution of phosphoric acid/chromic acid. The anodic films were post- treated with boiling water, potassium dichromate, nickel sulfate and cerium nitrate, respectively. The results show that the post- sealing can greatly enhance the corrosion resistance of the anodized 2195 Al- Li alloy. The corrosion resistance of the anodic oxide film after post- treatment with cerium nitrate is far better than that with boiling water, but slightly inferior to those with potassium dichromate and nickel sulfate. Finally long term spray test results reveal that the anodized 2195 Al-Li alloy after sealing treatment with potassium dichromate exhibits the highest corrosion resistance among the four post-sealing treatments.

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来源期刊

腐蚀科学与防护技术 Chemical Engineering-Chemical Engineering (all)

CiteScore

0.60

自引率

0.00%

发文量

2399

期刊介绍： Corrosion Science and Protection Technology is approved by the General Administration of Press and Publication of the State Council, the Chinese Academy of Sciences, the Chinese Academy of Sciences Institute of Metals organized by the domestic and international public circulation of national periodicals metal surface treatment academic journals. The journal is a professional and technical publication. It reports the scientific and technological achievements in the field of metal corrosion and protection, and publishes research reports, reviews, technical reports, research briefs, failure analysis, experience exchange, etc. The readers are engaged in the field of metal corrosion and protection. The target readers are scientific and technological personnel engaged in metal corrosion and protection and teachers and students of related professional colleges and universities. Corrosion Science and Protection Technology is indexed in CSCD, CSTPCD, CA,MA,SA and other authoritative databases.