A. Pilbáth*, T. Szabó, J. Telegdi, L. Nyikos
Chemical Research Center of Hungarian Academy of Sciences
Scratch tests were performed on epoxy coated steel samples with and without microcapsulated linseed oil, known to develop a polymerized protective layer after having been released from the capsules at the damaged sites. The
scanning electrochemical microscope (SECM) has been applied to monitor the protection efficiency of this self-healing coating. In the proximity of the local damage, both the anodic metal dissolution and the cathodic oxygen
reduction showed that the coating with microcapsules substantially and spontaneously decreased the rate of corrosion proving the self-repair concept of the coating.