Review on Factors and Mechanism for Corrosion and Failure of Avionic Devices in Marine Environment
Compared with the corrosion of aircraft structural materials,a slight corrosion of avionic devices may cause intermittent or permanent failure of the electric circuits or their performances,po-sing a great threat to aviation safety.In view of the fact that the failure probability of avionic devices is obviously higher in the marine environment,this work firstly summarizes the factors and mecha-nisms that lead to the failure of avionic devices from three aspects of marine atmospheric environ-ment,avionic devices themselves and local in-service environment.Then,the mainly applied corro-sion protection measures are briefly described.Finally,the outlook of the future studies on failure of avionic devices in marine environment is performed.It is expected to provide references for,impro-ving the stability of avionic devices in marine environment,developing corrosion-resistant electronic materials,establishing quick-evaluation system of avionic devices under coupling factors,and explo-ring new corrosion protection methods.
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