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Corrosion protection of pure aluminium and aluminium alloy (AA7075) in salt solution with silane-based sol-gel coatings

Younis, A. A. ; Ensinger, Wolfgang ; El-Sabbah, M. M. B. ; Holze, R. (2013)
Corrosion protection of pure aluminium and aluminium alloy (AA7075) in salt solution with silane-based sol-gel coatings.
In: Materials and Corrosion, 64 (4)
doi: 10.1002/maco.201206691
Artikel, Bibliographie

Kurzbeschreibung (Abstract)

Sol-gel films of tetraethoxysilane (TEOS), phenyltriethoxysilane (PTES) and phenyltrimethoxysilane (PTMS) were prepared on aluminium and aluminium alloy AA7075 and characterised. The corrosion inhibition properties of uncoated and coated specimens were evaluated with potentiodynamic polarisation scan, linear polarisation resistance and open circuit potential measurements. With scanning electron microscopy and optical microscopy effects of the sol-gel coating were shown. Weight loss measurements were performed at different pH-values. More hydrophobic coatings as PTMS show a considerably better corrosion inhibition capacity as compared to the capacity provided by less hydrophobic ones as TEOS and PTES.

Typ des Eintrags: Artikel
Erschienen: 2013
Autor(en): Younis, A. A. ; Ensinger, Wolfgang ; El-Sabbah, M. M. B. ; Holze, R.
Art des Eintrags: Bibliographie
Titel: Corrosion protection of pure aluminium and aluminium alloy (AA7075) in salt solution with silane-based sol-gel coatings
Sprache: Englisch
Publikationsjahr: 2013
Titel der Zeitschrift, Zeitung oder Schriftenreihe: Materials and Corrosion
Jahrgang/Volume einer Zeitschrift: 64
(Heft-)Nummer: 4
DOI: 10.1002/maco.201206691
Kurzbeschreibung (Abstract):

Sol-gel films of tetraethoxysilane (TEOS), phenyltriethoxysilane (PTES) and phenyltrimethoxysilane (PTMS) were prepared on aluminium and aluminium alloy AA7075 and characterised. The corrosion inhibition properties of uncoated and coated specimens were evaluated with potentiodynamic polarisation scan, linear polarisation resistance and open circuit potential measurements. With scanning electron microscopy and optical microscopy effects of the sol-gel coating were shown. Weight loss measurements were performed at different pH-values. More hydrophobic coatings as PTMS show a considerably better corrosion inhibition capacity as compared to the capacity provided by less hydrophobic ones as TEOS and PTES.

Freie Schlagworte: Aluminium, aluminium alloy (AA7075), phenyltriethoxysilane, phenyltrimethoxysilane, sol-gel coating, tetraethoxysilane
Fachbereich(e)/-gebiet(e): 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Materialanalytik
11 Fachbereich Material- und Geowissenschaften
Hinterlegungsdatum: 02 Mai 2013 11:10
Letzte Änderung: 02 Mai 2013 11:10
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