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Optimizing smart self-healing coatings: Investigating the transport of active agents from the coating towards the defect

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Yin,  Yue
Corrosion, Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society;

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Schulz,  Matthias
Corrosion, Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society;

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Rohwerder,  Michael
Corrosion, Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society;

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Citation

Yin, Y., Schulz, M., & Rohwerder, M. (2021). Optimizing smart self-healing coatings: Investigating the transport of active agents from the coating towards the defect. Corrosion Science, 190: 109661. doi:10.1016/j.corsci.2021.109661.


Cite as: http://hdl.handle.net/21.11116/0000-0009-45A3-1
Abstract
There are many studies on different concepts for so called smart self-healing coatings providing safe storage and corrosion triggered release of inhibitors. However, achieving an efficient transport of the released inhibitor to the defect is so far a widely neglected issue, although it is crucial for the overall performance. Hence, an in-depth investigation was carried out on inhibitor transport through the coating system into the defect, based on dedicated model sample set-ups. The main focus was on the possible beneficial role of an interfacial polypyrrole layer on the overall performance. Especially for some organic inhibitors huge effects were observed. © 2021