Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8028753 | Surface and Coatings Technology | 2013 | 8 Pages |
Abstract
Corrosion is one of the most destructive processes in materials induced by environment. Protection and repair of metallic surfaces are major challenges in many engineering applications. We report a novel polyelectrolyte nanostructured coating incorporating the corrosion inhibitor, 8-hydroxyquinoline (8-HQ), into titanium dioxide (TiO2) nanoparticles (NPs). The potentiodynamic polarization measurements and real-time electrochemical impedance spectroscopy (EIS) monitoring demonstrated that the nanostructured coating protected aluminum (Al) from corrosion. Photocatalytic TiO2 was able to release incorporated 8-HQ only with the exposure to UV light resulting in a self-healing effect. Real-time EIS results showed that a new passivated layer was formed after 8-HQ molecules were released. The research in interfaces brings insights in understanding new aspects of corrosion and surface repair.
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Xingliang He, Chengwei Chiu, Mel J. Esmacher, Hong Liang,