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| Corrosion Resistance of Two Protective Coatings of 2024 Aluminum Alloy Structure |
| Received:February 21, 2019 Revised:July 25, 2019 |
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| DOI：10.7643/ issn.1672-9242.2019.07.018 |
| KeyWord:nano coating 5% NaCl salt fog environment corrosion fatigue performance corrosion environment |
| Author | Institution |
| ZHANG Hong-fei |
Aviation Key Laboratory of Science and Technology on Structural Corrosion Prevention and Control, China Special Vehicle Research Institute, Jingmen , China |
| ZHAO Lian-hong |
Aviation Key Laboratory of Science and Technology on Structural Corrosion Prevention and Control, China Special Vehicle Research Institute, Jingmen , China |
| WANG Hao-wei |
Aviation Key Laboratory of Science and Technology on Structural Corrosion Prevention and Control, China Special Vehicle Research Institute, Jingmen , China |
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| Abstract: |
| Objective To study the corrosion fatigue properties of 2 protective coatings of aluminum alloy in 5% NaCl salt fog environment. Methods The laboratory accelerated test was carried out for 2024 aluminum alloy connection structure under two coating protective effects. The experimental model of "corrosion environment-fatigue loading" alternating cycle was adopted to obtain the corrosion fatigue lifetime values of two aluminum alloy protective coatings under 5% NaCl salt fog environment. The effect of coating system on corrosion fatigue life of aluminum alloy structure was analyzed. Results The study showed that 5% NaCl salt fog environment had a great influence on the fatigue life of aluminum alloy connection structure, and the Nano coating had better protection effect than the traditional coating in 5% NaCl salt fog environment. Conclusion The rapid formation of oxide film after the coating surface densification and destruction can improve the corrosion resistance of the coating effectively. |
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