The Formation of Self-Organizing Organosilicone Layers on a Carbon Steel Surface and Their Effect on the Electrochemical and Corrosion Behavior of the Metal

Adsorption on the carbon steel surface of vinyl trimethoxysilane and γ-aminopropyl triethoxysilane from aqueous solution is studied using the methods of Fourier-transform infrared spectroscopy, scanning electron microscopy, and energy dispersive X-ray spectroscopy. A mechanism of surface layer forma...

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Bibliographic Details
Published in:Protection of metals and physical chemistry of surfaces 2019-09, Vol.55 (5), p.895-902
Main Authors: Petrunin, M. A., Gladkikh, N. A., Maleeva, M. A., Maksaeva, L. B., Kostina, Yu. V., Shapagin, A. V., Yurasova, T. A., Kotenev, V. A., Tsivadze, A. Yu
Format: Article
Language:English
Subjects:
Accelerated tests
Adsorption
Anodic dissolution
Aqueous solutions
Carbon steel
Carbon steels
Characterization and Evaluation of Materials
Chemistry and Materials Science
Corrosion and Coatings
Corrosion effects
Corrosion tests
Dissolution
Electrochemical analysis
Fourier transforms
Hydroxyl groups
Industrial Chemistry/Chemical Engineering
Inorganic Chemistry
Iron
Materials Science
Metal surfaces
Metallic Materials
Nanoscale and Nanostructured Materials and Coatings
Silanes
Spectrum analysis
Surface chemistry
Surface layers
Test chambers
Tribology
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Summary:Adsorption on the carbon steel surface of vinyl trimethoxysilane and γ-aminopropyl triethoxysilane from aqueous solution is studied using the methods of Fourier-transform infrared spectroscopy, scanning electron microscopy, and energy dispersive X-ray spectroscopy. A mechanism of surface layer formation is suggested. It is shown that in the course of adsorption silanes interact with hydroxyl groups of the metal surface with formation of Fe–O–Si bonds. The effect of organosilicone layers on the electrochemical behavior of steel is studied. It is found that the potential of pitting formation of steel is shifted in the presence of organosilicone layers into the range of positive values, which points to inhibition of local anodic dissolution of the metal. Accelerated corrosion tests of steel samples in a climatic chamber are performed, and the corrosion-inhibiting effect of vinyl- and amino-containing surface layers is shown.
ISSN:2070-2051
2070-206X
DOI:10.1134/S2070205119050204