Abstract
Investigations have been made on relationship between concentration of oxygen in NaCl solution and pitting attacks of aluminum alloy 5052 for can stocks. The value of anodic polarized resistance of 5052 was measured in 5000ppm NaCl solution, in which the oxygen concentration was continuously changed from 1ppb to 3ppm, by the technique of area polarization method. This technique characteristically shows rapid and continuous measuring system. It is found that the oxygen concentration at occurrence of the pitting attacks of 5052 shows the value of 900ppb in the 5000ppm NaCl solution.
