The effect of self-organizing vinyl siloxane nanolayers on the corrosion behavior of aluminum in neutral chloride-containing solutions

The methods of quartz crystal microbalance, atomic force microscopy (AFM), scanning electron microscopy (SEM), Fourier-transform IR spectroscopy, and X-ray structural microanalysis were is used to show that adsorption of vinyl silane on an aluminum surface from an aqueous solution results in formati...

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Published inProtection of metals and physical chemistry of surfaces Vol. 50; no. 6; pp. 784 - 791
Main Authors Petrunin, M. A., Maksaeva, L. B., Yurasova, T. A., Terekhova, E. V., Maleeva, M. A., Shcherbina, A. A., Kotenev, V. A., Kablov, E. N., Tsivadze, A. Yu
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.11.2014
Springer Nature B.V
Subjects
Aluminum base alloys
Characterization and Evaluation of Materials
Chemistry and Materials Science
Chlorides
Corrosion and Coatings
Corrosion prevention
Industrial Chemistry/Chemical Engineering
Inorganic Chemistry
Materials Science
Metallic Materials
Microbalances
Nanoscale and Nanostructured Materials and Coatings
Nanostructure
Scanning electron microscopy
Siloxanes
Surface chemistry
Tribology
Corrosion Test
Quartz Crystal Microbalance
Aluminum Surface
Local Corrosion
Molecular Layer
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Summary:The methods of quartz crystal microbalance, atomic force microscopy (AFM), scanning electron microscopy (SEM), Fourier-transform IR spectroscopy, and X-ray structural microanalysis were is used to show that adsorption of vinyl silane on an aluminum surface from an aqueous solution results in formation of a uniform, self-organizing protective vinyl siloxane nanolayer covalently bound with surface metal groups. Its thickness can be controlled by variation of application conditions. The effect of a vinyl siloxane nanolayer on dissolution of aluminum is studied in chloride-containing solutions. It is found that an ordered vinyl siloxane nanolayer with a thickness of up to 5 molecular layers causes efficient inhibition of uniform and local corrosion of aluminum. It is shown that the vinyl siloxane nanolayer is preserved on the surface of aluminum after 10 days of corrosion tests, which indicates its stability at exposure to water and corrosive components.
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ISSN:2070-2051
2070-206X
DOI:10.1134/S2070205114060161