9818247035

Vrije Universiteit Brussel

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Self-healing coatings forthe corrosion protection of metals

/. De Graeye

Vrije Universiteit Brussel, Research Group Electrochemical and Surface En-gineering, Pleinlaan 2, 1050 Brussels, Belgium

The use of self-healing polymers as coating materials on metals is a relative new approach to enhance corrosion protection. Various self-healing polymer systems are being explored_; and their combination with incorporated active corrosion inhibi-tors results in multiple action self-healing coating systems: the inhibitor passivates the metal when the coating is damaged in a corrosive environment, and the coating materiał itself can heal resulting in defect closure at a local damage site. To study these healing mechanisms various surface analytical and electrochemical methods are used. Especially for the study of the local healing mechanisms at defect sites, local electrochemical methods, such as Scanning Electrochemical Microscopy (SECM), the Scanning Vibrating Electrode Technique (SVET) and local Electrochemical Impedance Spectroscopy (EIS), are being explored and developed.