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Título

SiO2 based hybrid inorganic–organic films doped with TiO2–CeO2 nanoparticles for corrosion protection of AA2024 and Mg-AZ31B alloys

AutorZaharescu, M.; Predoana, L.; Barau, A.
Palabras claveAluminium
Magnesium
Fecha de publicación2009
EditorElsevier
CitaciónCorrosion Science 51 (2009) 1998–2005
ResumenHybrid sol–gel coatings provide an approach as protective layers on metals. In this work, corrosion protection of aluminium and magnesium alloys by SiO2-methacrylate coatings doped with TiO2–CeO2 nanoparticles was studied. The films show an improvement of the barrier properties at initial immersion. The reactivity of both alloys produces a deterioration of the protection with longer immersion, although TiO2– CeO2 nanoparticles let to observe signals of self-healing effect. Aluminium oxide/sol–gel interface was found to be stable. In combination with excellent paint adhesion on sol–gel films, these coatings can be a promising alternative pre-treatment for high strength aluminium alloys prior to painting.
Versión del editorhttp://dx.doi.org/doi:10.1016/j.corsci.2009.05.022
URIhttp://hdl.handle.net/10261/24114
DOI10.1016/j.corsci.2009.05.022
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