Factors Influencing the Rate of Cathodic Disbonding of Coatings

Abstract

Cathodic disbonding on coated steel panels was studied. The coating was applied by airless spraying on blast-cleaned steel surfaces. The importance of electrolyte, polarization potential, dry film thickness, and temperature was investigated. The time dependence of disbonding was determined in a long-term test in natural seawater. Implications of the test results for the relevance of the ASTM G 8 test were reviewed.