Octadecyl-trimethoxy-silane film formed on copper in different conditions

The formation of a protective layer by dipping copper specimens in a hydroalcoholic solution of a silanic agent with a long aliphatic chain ( n-octadecyl-trimethoxy-silane, OctadecS) was studied using electrochemical techniques (impedance spectroscopy and potentiodynamic polarization curve) and FTIR...

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Bibliographic Details
Published in:Materials chemistry and physics 2007-06, Vol.103 (2), p.340-344
Main Authors: Zucchi, F., Grassi, V., Frignani, A., Trabanelli, G., Monticelli, C.
Format: Article
Language:English
Subjects:
Coatings
Copper
Corrosion
Silanic compounds
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Summary:The formation of a protective layer by dipping copper specimens in a hydroalcoholic solution of a silanic agent with a long aliphatic chain ( n-octadecyl-trimethoxy-silane, OctadecS) was studied using electrochemical techniques (impedance spectroscopy and potentiodynamic polarization curve) and FTIR spectroscopy. By simple immersion, the protective effects of OctadecS film are poor. Aging, and particularly curing improves its inhibiting performance. The latter treatment produces a thicker and more persistent, and therefore, more protective silanic layer. The interactions between the long aliphatic chains of OctadecS molecules as well as the condensation of their silanol groups are considered in relation to the formation of a thick and efficient silanic coating.
ISSN:0254-0584
1879-3312
DOI:10.1016/j.matchemphys.2007.02.050