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Corrosion Simulation of Aircraft Skin Coating under Transitional Mediterranean Climate and Tropical Desert Climate |
Received:October 30, 2018 Revised:April 25, 2019 |
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DOI:10.7643/ issn.1672-9242.2019.04.019 |
KeyWord:simulative environmental test corrosion characteristics aircraft skin coating |
Author | Institution |
WANG Yan-yan |
No. 59 Institute of the China Ordnance Industry, Chongqing , China |
WANG Hui |
No. 59 Institute of the China Ordnance Industry, Chongqing , China |
WANG Ling |
No. 59 Institute of the China Ordnance Industry, Chongqing , China |
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Abstract: |
Objective To reproduce corrosion characteristics of aircraft skin coating under transitional Mediterranean climate and tropical desert climate. Methods Simulative acceleration test was carried out on the coating samples through single test, combined cycle test, etc. to observer the corrosion characteristics of coating. The microstructure and element distribution of the surface were analyzed by ESEM and XPS. Results The bubble phenomenon appeared in salt fog test, cycle immersion test and damp heat-salt fog-solar radiation test, while the function of Cl? was reinforced in these tests. The corrosion characteristics in salt fog test and damp heat-salt fog-solar radiation test was similar to the actual corrosion phenomenon. Besides bubble, contamination that has never appeared in actual use appeared in immersion test. Conclusion Salt fog test has the highest simulation efficiency. The bubble of the skin coating is mainly affected by Cl? in local atmosphere and groundwater. |
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