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Erschienen in: Journal of Sol-Gel Science and Technology 1/2019

08.10.2018 | Original Paper: Sol-gel and hybrid materials for energy, environment and building applications

Effect of organic precursor in hybrid sol–gel coatings for corrosion protection and the application on hot dip galvanised steel

verfasst von: Cecilia Agustín-Sáenz, Eider Martín-Ugarte, Jean Baptiste Jorcin, Gorka Imbuluzqueta, Patricia Santa Coloma, Usoa Izagirre-Etxeberria

Erschienen in: Journal of Sol-Gel Science and Technology | Ausgabe 1/2019

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Abstract

Sol-gel coating material with enhanced corrosion protection for zinc-coated steel has been obtained through the incorporation of mono-phenol and bi-phenol organic precursors in an epoxide functionalised-silica-zirconia matrix. The effect of the presence of the organic precursors in the baseline formulation has been studied; sol stability has been examined by viscosity evolution; gel densification stage has been studied by differential scanning calorimetry (DSC); material composition has been analysed by Fourier transform infrared spectroscopy (FTIR) and X-ray spectroscopy (XPS); coating thickness and roughness has been measured by profilometry. Corrosion performance in three artificial weathering tests showed outstanding performance in the delay of zinc and steel corrosion products emergence, and electrochemical impedance spectroscopy (EIS) measurement permitted the identification of the coating presenting the most promising properties in terms of corrosion protection. Developed coatings have shown outstanding contribution to service life extension of zinc-coated parts.

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Metadaten
Titel
Effect of organic precursor in hybrid sol–gel coatings for corrosion protection and the application on hot dip galvanised steel
verfasst von
Cecilia Agustín-Sáenz
Eider Martín-Ugarte
Jean Baptiste Jorcin
Gorka Imbuluzqueta
Patricia Santa Coloma
Usoa Izagirre-Etxeberria
Publikationsdatum
08.10.2018
Verlag
Springer US
Erschienen in
Journal of Sol-Gel Science and Technology / Ausgabe 1/2019
Print ISSN: 0928-0707
Elektronische ISSN: 1573-4846
DOI
https://doi.org/10.1007/s10971-018-4840-6

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