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Self-Assembling Monolayers of Stearic Acid in Protection of Steel

Katarina Marušić orcid id ; Ruđer Bošković Institute, Bijenička c. 54, HR-10000 Zagreb, Croatia
Helena Otmačić Ćurković ; Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, HR-10000 Zagreb, Croatia

Puni tekst: engleski pdf 1.682 Kb

str. 427-433

preuzimanja: 925



Carbon steel corrodes severely in presence of sodium chloride and it needs additional protection to be used in marine environments. This work investigates the possibility of using a layer of stearic acid as protection for carbon steel. Stearic acid was applied on the steel by two types of treatments: chemical preparation - by immersion of a steel sample in the SA solution and electrochemical preparation – by imposing a corresponding potential to the system. The results have shown that although both treatments result in obtaining an ordered aliphatic monolayer and both treatments increase the hydrophobicity of the surface, protection that the electrochemical preparation offers is stable in time, while the protection the chemical preparation offers is not.

This work is licensed under a Creative Commons Attribution 4.0 International License.

Ključne riječi

corrosion; carbon steel; self-assembled monolayer; electrochemically directed assembly; electrochemical impedance spectroscopy; fourier transform infrared spectroscopy

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