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| Performance of Typical Structures of A Type of Aircraft after Natural Exposure in a Coastal Airport |
| Received:October 27, 2015 Revised:April 15, 2016 |
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| DOI：10.7643/issn.1672-9242.2016.02.017 |
| KeyWord:aircraft structures natural exposure |
| Author | Institution |
| ZHANG Yong |
Qingdao Branch of Naval Aeronautical Engineering Academy， Qingdao ， China |
| WANG Chen-guang |
Graduate Students Brigade of Naval Aeronautical Engineering University， Yantai ， China |
| BIAN Gui-xue |
Qingdao Branch of Naval Aeronautical Engineering Academy， Qingdao ， China |
| WANG An-dong |
Graduate Students Brigade of Naval Aeronautical Engineering University， Yantai ， China |
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| Abstract: |
| Objective To study the corrosion mechanism of typical structures of a type of aircraft. Methods Natural exposure test of typical aircraft structures were carried out in Lingshui coastal airport. The surface morphology and the composition of corrosion products were obtained by means of SEM and XRD, which were used to evaluate the corrosion and aging performance of substrate and its overlying corrosion protection system, and to obtain the changing law of the protection performance at different parts of the aircraft. Results Different parts showed different mechanism and types of corrosion even in the same environment. The coating of the specimen, which directly contacted with the edge and bolt parts, and the specimen joint showed most serious aging and falling off phenomenon, leading to serious corrosion in the exposed substrate, while the corrosion degree of other parts was lighter, with even aging and falling off of the coating. Conclusion Under the action of the same environmental spectrum, the corrosion types and mechanisms at different parts of the critical connecting structures of the force-bearing panel. |
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