Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1470250 | Corrosion Science | 2011 | 8 Pages |
In this paper the interface of poly(vinylidene fluoride) coatings prepared by the dip coating method and HF-treated AZ31 magnesium alloy was evaluated. The best performance of this system in corrosion tests compared to ground, as-received and acetic acid cleaned substrates is related to an acid–base interaction at the interface and to interfacial reactions which resulted in a self-healing process. The protectiveness of the samples was investigated using impedance and immersion tests while the coating morphology and interface stability were investigated by scanning electron microscopy, X-ray photoelectron spectroscopy and adhesion tests.
Research highlights► Reports a high protection system for the alloy in corrosive environment. ► Describes an interfacial process with self-healing properties. ► Reports the influence of substrate pre-treatment in the coating performance.