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January 3, 2023
Salt spray corrosion is a common and most destructive atmospheric corrosion. The corrosion of salt spray on the surface of metal materials is caused by the electrochemical reaction between the contained chloride ions penetrating the oxide layer and protective layer of the metal surface and the internal metal. At the same time, chloride ions contain a certain amount of hydration energy, and are easily displaced by the pores and cracks adsorbed on the metal surface to replace the oxygen in the oxide layer, turning insoluble oxides into soluble chlorides, and turning the passivated surface into an active surface. .