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| Effects of Sealing Treatment on Protective Properties of Hard Anodic Oxide Coatings on Aluminum Alloy |
| Received:July 07, 2019 Revised:June 13, 2019 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2019.12.013 |
| KeyWord:aluminum alloy corrosion resistance NSS CASS hard anodizing sealing treatment |
| Author | Institution |
| QIAN Jian-cai |
Southwest Technology and Engineering Research Institute, Chongqing , China;China Weathering Test and Research Center of Science Technology and Industry for National Defense, Chongqing , China |
| ZOU Hong-qing |
Southwest Technology and Engineering Research Institute, Chongqing , China;China Weathering Test and Research Center of Science Technology and Industry for National Defense, Chongqing , China |
| MA Chun-hua |
College of Mechanical and Electronic Engineering, Nanyang Normal University, Nanyang , China |
| FANG Min |
Southwest Technology and Engineering Research Institute, Chongqing , China;China Weathering Test and Research Center of Science Technology and Industry for National Defense, Chongqing , China |
| XU Bin |
Southwest Technology and Engineering Research Institute, Chongqing , China;China Weathering Test and Research Center of Science Technology and Industry for National Defense, Chongqing , China |
| LYU Ji-cheng |
Southwest Technology and Engineering Research Institute, Chongqing , China;China Weathering Test and Research Center of Science Technology and Industry for National Defense, Chongqing , China |
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| Abstract: |
| Objective To find out the effect of sealing treatment on the protective performance of hard anodic oxide coating on aluminum alloy under different corrosion conditions. Methods Neutral salt spray test (NSS) and copper-accelerated acetic acid salt spray test (CASS) were adopted for accelerated test. The corrosion morphology of scratched samples and the corrosion appearance and adhesion strength of non-scratched samples were examined and analyzed. Results Protective properties, corrosion failure, adhesion change and anti-corrosion propagation performance of hard anodic oxide coating on four kinds of aluminum alloy materials under different test environments were obtained. Conclusion Sealing treatment can improve the corrosion resistance of hard anodic oxide coatings, improve the anti-corrosion propagation performance of hard anodic oxide coatings, and help to solve the problem of low adhesion between hard anodic oxide coatings and organic coatings. |
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