THE INFLUENCE OF AIRBORNE SALINITY ON THE ATMOSPHERIC CORROSION OF STEEL

A model of the influence of chloride deposition rate and SO2 depositio n rate on atmospheric corrosion of steel has been proposed. Accumulate d corrosion and pollution data obtained since 1979 from different Cuba n sites were statistically processed. A model is obtained when data fr om all corrosion stations are processed independently of the type of c limatic territory. The influence of chloride ions is very significant in determining corrosion rate when there is already a corrosion produc ts layer; however, when this layer is not completely formed the influe nce of time of wetness is the controlling factor. The existence of a c ompetitive adsorption process between chloride and sulphur compounds p resent in airborne salinity is very possible.