Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10266924 | Electrochemistry Communications | 2011 | 5 Pages |
Abstract
In this paper the local healing efficiency of shape-memory polymers as a new alternative for the protection against corrosion of damaged coated metals is studied by scanning electrochemical microscopy (SECM). These measurements allowed us to evaluate the local corrosion activity at a damaged self-healing polymer coating on an aluminum alloy before and after the thermally healing process of the shape-memory polymer film. SECM operating in redox-competition mode is applied to monitor in situ the reduction of oxygen as a cathodic process in the corrosion onset at a coating defect as a function of exposure time in 0.05 M NaCl solution. It is proven that the physical repair of the film in the defect leads to a recovery of the local barrier properties of the coated system and subsequent protection of the aluminum alloy.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Y. González-GarcÃa, J.M.C Mol, T. Muselle, I. De Graeve, G. Van Assche, G. Scheltjens, B. Van Mele, H. Terryn,