Analysis of Concentration of Chloride Ion in Crevice Corrosion of Austenitic Stainless Steel Using Occluded Cell

Analysis of concentration of chloride ion in crevice corrosion was done on type 304 stainless steel by immersion of the specimen in 0.5 ㏖/l NaCl solutions and measured using galvanostatic measurement in occluded cell. The anodic reaction in crevice corrosion could be estimated as the changing the concentration of chloride ion by using occluded cell. The condense of the chloride ion was derived by keeping the neutrality in the crevice area. The results show that chloride ion concentrations in crevice during the crevice corrosion growth. This proves that the use of Ag / AgCl electrode can be applied for chloride ion measurement in crevice corrosion.