What causes the corrosion of aluminum plate

Corrosion has always been the primary factor affecting the service life of aluminium plates . Although the aluminium sheet treated by a certain process can be used in complex environment, due to many factors causing corrosion of the aluminium sheet, no perfect process can guarantee that the aluminium sheet plate will not be corroded. The main causes of corrosion of aluminium sheet: environmental factors, metallurgical factors and stress factors 1. Environmental factors The main environmental factors affecting stress corrosion of Aluminum Brazing Sheet plate are ion species, ion concentration, solution pH value, oxygen and other gases, corrosion inhibitors, environmental temperature, environmental pressure and so on. The stress corrosion susceptibility of aluminium sheet is different in different environments, and it is more sensitive in marine environments. There is a lot of salt in the marine environment. Cl - will pass through the maintenance film on the surface of the a...