Anticorrosion activity of phosphonic acid amphiphile in self-assembled molecular layer

• É.K. Pfeifer¹, I.G. Gyurika¹ and J. Telegdi^2,3

¹ University of Pannonia, Institute of Material and Mechanical Engineering, Department of Functional and Structural Materials, 8200 Veszprém, Egyetem Str 10, Veszprém, Hungary
² Functional Interfaces Group, Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences; 1117 Budapest, Magyar tudósok körútja 2, Hungary
³ Óbuda University, Faculty of Light Industry and Environmental Engineering, Budapest, Hungary

Abstract: The aim of our experiments was to demonstrate the increase in the corrosion resistance of two stainless steels after nanolayer deposition. The questions we wanted to answer were: how the self-assembled deposition time influences the compactness of the nanolayers and how the steel composition influences the nanofilms deposition, its compactness and the anticorrosion efficiency. To answer these questions self-assembled molecular layers were prepared by dipping technique; the nanolayers were characterized by water wettability values and the two different stainless steel samples with and without nanofilms were subjected to corrosive media (sodium chloride solution). The effect of the chloride ions on the solid surfaces were visualized by atomic force microscopy and characterized by roughness parameters. The anticorrosion efficiency caused by the steel surface compositions as well as by the different self-assembled adsorption time was explained by the experimental data.

Keywords: undecenyl phosphonic acid, self-assembled molecular layers, wettability, atomic force microscopy, roughness, anticorrosion self-assembled nanolayers

Int. J. Corros. Scale Inhib., 2023, 12, no. 3, 1261-1274
doi: 10.17675/2305-6894-2023-12-3-25

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