Abstract
Heteropolysiloxane coatings were deposited on an electrogalvanized steel substrate by the dip-coating sol-gel technique. Different coating sols using two precursors, aminopropyltriethoxysilane and methyltriethoxysilane, diluted in a water/ethanol mixture with or without the presence of catalyst, were prepared. Thus, coatings incorporating into their structure, both amine and methyl groups of hydrophilic and hydrophobic character, respectively, were obtained.
The characterization of the coatings was monitored at the various stages from the sol state to the solid state using several techniques, namely 29Si NMR, SEM, EMPA, XPS, FTIR and Raman spectroscopies, and the mechanical three-point flexure test. The capability of heteropolysiloxane coatings to protect the electrogalvanized steel substrate against humid corrosion and to act as an adhesion promoter has been investigated.
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Mayrand, M., Quinson, J., Roche, A. et al. Heteropolysiloxane Coatings on Electrogalvanized Steel: Elaboration and Characterization. Journal of Sol-Gel Science and Technology 12, 49–57 (1998). https://doi.org/10.1023/A:1008605110207
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DOI: https://doi.org/10.1023/A:1008605110207