Influence of TiO₂ nanocontainers on hybrid organic‐inorganic coatings for corrosion protection of magnesium alloy

Abstract

Purpose

The purpose of this paper is to focus on the corrosion protection of magnesium alloy ZK10 by applying via the dip‐coating process an hybrid organic‐inorganic coating that contains nanocontainers of TiO₂ loaded with corrosion inhibitor.

Design/methodology/approach

The coating consists of cross‐linked polymers containing epoxy groups, conductive polymer polypyrrole as well as organic modified silicates. The morphology and the composition of the coating were examined with scanning electron microscopy and energy dispersive X‐ray analysis, respectively.

Findings

Corrosion tests via electrochemical impedance spectroscopy denoted that the incorporation of loaded nanocontainers improved the anticorrosion properties of the coating by increasing the impedance values in the low frequency range. Moreover, the surface of the aforementioned coating remained crack free after the exposure of the sample to corrosive environment.

Originality/value

The paper presents a new system which has been developed for the corrosion protection of magnesium alloy ZK10.

Citation

Kartsonakis, I.A., Balaskas, A.C. and Kordas, G.C. (2013), "Influence of TiO₂ nanocontainers on hybrid organic‐inorganic coatings for corrosion protection of magnesium alloy", International Journal of Structural Integrity, Vol. 4 No. 1, pp. 127-142. https://doi.org/10.1108/17579861311303681