Time Dependent Development of Aluminium Pitting Corrosion

Figure 7

Data for maximum pit depth of aluminium alloy AA3003 exposed in the marine atmosphere at Rhode Island, NJ, for up to 20 years. The trend for maximum pit depth is shown. The location where the changeover from mode 2 to mode 3 is expected to occur is shown circled, at about 2 years of exposure. Data from Lifka [29].