INFLUENCE OF SO32− IONS ON PITTING CORROSION OF STAINLESS STEELS Available to Purchase

For many years the effect of sulphuric anhydride in the atmosphere has been recognised, such as in the report by Thomson. As an example of this, consider some of the work reported by Hudson and Stanners, who exposed iron and steel to copper in a variety of environments. When they studied the results, they found a close relationship between the degree of corrosion and the amount of SO2 present, whereas the effect of chlorides was restricted to a narrow test area close to the sea.