Affiliation:
1. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Moscow 119071, Russia
Abstract
Methods for preliminary modification of the surface of structural metals with formulations based on organosilanes, including both solutions of individual organosilanes and two-component mixtures consisting of two organosilanes or an organosilane with an organic corrosion inhibitor, have been developed. As a result of this modification, a self-assembling siloxane polymeric/oligomeric nanoscale layer is formed on the metal surface. Such layers are capable of changing the physicochemical properties of the metal surface, in particular reducing the susceptibility of the metal to corrosive destruction. In this work, the mechanism of formation of organosilicon nanolayers and their effect on the electrochemical and corrosion behavior of metals have been studied in detail by a set of electrochemical methods, while laboratory studies and accelerated corrosion tests of carbon steel and zinc, modified with formulations based on organosilanes, have been carried out. The greatest inhibitory effect is demonstrated by two-component modifying formulations, namely mixtures of vinyl with aminosilane and vinylsilane with benzotriazole. The mechanism of corrosion inhibition by surface nanolayers formed upon surface modification with two-component mixtures has been considered.
Funder
Ministry of Science and Higher Education of the Russian Federation
Subject
General Materials Science,Metals and Alloys
Reference47 articles.
1. McCafferty, E. (2010). Introduction to Corrosion Science, Springer Science + Business Media.
2. Sastri, V.S. (2015). Challenges in Corrosion: Costs, Causes, Consequences and Control, John Wiley & Sons Ltd.
3. (2018). The Cost of Corrosion in China, Science Press-Springer.
4. El-Sherik, A.M. (2017). Trends in Oil and Gas Corrosion Research and Technologies, Woodhead Publishing.
5. Fedrizzi, L., Furbeth, W., and Montemor, F. (2011). Self-Healing Properties of New Surface Treatments, Maney Publishing.