Abstract
The oxide film formed naturally on the surface of aluminum alloy is easy to be damaged in marine and lake environment, resulting in corrosion and damage of aluminum alloy matrix materials. Compared with alumina, aluminum fluoride has excellent chemical stability. It is insoluble in acid, alkali and most organic solvents. In this study, polyvinylidene fluoride (PVDF) was used as the surface treatment material. A protective layer of aluminum fluoride was deposited on the surface of aluminum alloy by chemical vapor deposition. The coating enables the corrosion potential of aluminum alloy shift positively and decreases the corrosion current, indicating improved corrosion resistance of aluminum alloy.
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