Kinetic experiments of corrosion protection

A mechanism describing corrosion protection must specify the partial reaction of the corrosion process, which will be inhibited. This can either be the anodic metal dissolution or the cathodic process, which in most cases is oxygen reduction. A long-discussed mechanism dating back to Wessling is based on the assumed passivation of the metal surface by the positive redox potential of the conducting polymer, which in this case is polyaniline. 

It was first thought that the conducting polymer oxidized the metal and initiated the passivation process. Later it was assumed that oxygen reoxidized the reduced ICR 

Similar results were obtained with pol5 p5nTole. ° No protection of the iron or mild steel by just the ICP was observed. 

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