plating, anodizing, & finishing Q&As since 1989
Corrosion of anodized coating, cookware
I have a field returned sample of cookware which was anodized. The coating is now completely removed after 2 years of home use, non abrasive, non abusive residential conditions. We are attributing the failure to chloride attack based on chemical analysis of the surface. Any precedents or similar cases of corrosion?
Bureau Veritas Consumer Product Services - Buffalo, New York
Anodized surfaces have no appreciable resistance to caustic. A consumer could instantly remove the anodizing by mistakenly trying to clean the cookware with oven cleaner, or, depending upon the dishwasher detergent, remove it over a short time by cleaning it in a dishwasher.
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey