Abstract
Organosilane coatings are widely used as adhesion promoters, anti-adhesive and corrosion protective layers. Although they provide high stability, the harsh conditions during industrial applications lead to damage of the applied coatings over time. In this study, a simple and rapid method for the renewal of worn and damaged organosilane coatings was established. Steel surfaces were coated with a perfluorinated and a dipodal organosilane in order to introduce anti-adhesive properties to the substrate. The applied organosilane coating was removed via flame treatment, which simultaneously activated the substrate surface for recoating with another silane layer. The proposed mechanism was confirmed employing contact angle measurements and X-ray photoelectron spectroscopy. Moreover, it was shown that the quality and performance of the primary and the secondary coatings were comparable regarding to their anti-adhesive properties and chemical composition as well as surface roughness and thermal stability.
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