Influence of the anion specificity on the electrochemical corrosion of anodized aluminum substrates

• DOI: 10.1016/j.electacta.2009.12.063
• Publication Date: 2010-01-12T10:00:28Z
• Authors: J.L. Trompette; L. Arurault; S. Fontorbes; L. Massot
• Keywords: Anodizing; Pitting Corrosion

Abstract The electrochemical corrosion of anodized aluminum substrates in the presence of various electrolyte solutions at 0.01 mol L −1 concentration has been investigated. The comparative results were found to exhibit a correlation between the aggressiveness of the anions and their cosmotrope/chaotrope nature. The origin of the observed behavior was assumed to result from a variable resistance against dehydration during the pitting process.