The Behavior of Galvanized Steel Coated with a Double and Triple Layer of Hybrid Films

Sandra Raquel Kunst; Rogério Freitas dos Santos; Cláudia Trindade Oliveira; Elen Leal da Silva; Iduvirges Lourdes Müller; Célia de Fraga Malfatti

doi:10.4028/www.scientific.net/MSF.727-728.1604

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HomeMaterials Science ForumMaterials Science Forum Vols. 727-728The Behavior of Galvanized Steel Coated with a...

The Behavior of Galvanized Steel Coated with a Double and Triple Layer of Hybrid Films

Abstract:

The aim of this work is to characterize by electrochemical, physicochemical and morphological analysis the hybrid films applied on galvanized steel by dip-coating process. Preliminaries studies showed that a monolayer of silane is not enough to increase the corrosion resistance protection of the substrate. In this context, the galvanized steel was coated with a double and triple layer of hybrid film obtained from a sol constituted by silane precursors 3 - (trimetoxisililpropil) methacrylate (TMSPMA) and tetraethoxysilane (TEOS) with addition of cerium nitrate at a concentration of 0.01M. The hybrid films were cured for 20 minutes at 60°C in each application of the film. The results showed that a double and triple layer of hybrid film increase the barrier effect contributing to corrosion protection of galvanized steel.

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Periodical:

Materials Science Forum (Volumes 727-728)

Pages:

1604-1609

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.727-728.1604

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Online since:

August 2012

Authors:

Sandra Raquel Kunst, Rogério Freitas dos Santos, Cláudia Trindade Oliveira, Elen Leal da Silva, Iduvirges Lourdes Müller, Célia de Fraga Malfatti

Keywords:

Corrosion, Galvanized Steel, Hybrid Films, Layer

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