SOME UNEXPLORED AVENUES AT THE PAINT/METAL INTERFACE

摘要

The Mayne model of the paint metal interface clearly demonstrates the concept of resistance inhibition. The model may be extended to demonstrate aspects of underfilm behaviour including underfilm blistering and disbonding, shielding during cathodic protection, filiform corrosion, the role of anti corrosion pigments, and barrier coatings. However this elegant and clearly important model fails to explain several features of underfilm behaviour including: the relevance and importance of adhesion in coating performance, electroosmotic processes, the charged pore associated with the anodic area, the role of the contaminant in determining the mechanism of protection.