Study of oil formulations based on octanoic acid and some nitrogen-containing compounds as corrosion inhibitors

• N.S. Terebova¹, S.M. Reshetnikov², A.R. Gazizyanova², A.V. Tyukalov², I.V. Fedotova² and L.A. Sabanova²

¹ Udmurt Federal Research Center of the Ural Branch of the Russian Academy of Sciences, T. Baramzina st., 34, 426067 Izhevsk, Russian Federation
² Udmurt State University, Universitetskaya st., 1, 426034 Izhevsk, Russian Federation

Abstract: X-Ray photoelectron spectroscopy and infrared spectroscopy were used to study the mechanism of the formation of a preservation layer based on oil solutions of octanoic acid and nitrogen-containing compounds, such as hexamethylenetetramine and hydrazine hydrate, on the surface of steel 10. The protective effect of the formulations was evaluated using a Monicor corrosion meter in a model corrosion environment simulating the condensed moisture of industrial cities. It was found that the corrosion rates reduced significantly upon addition of the inhibitor mixture to the oil formulation. The optimum efficiency was achieved when the concentration of the inhibitor mixture was 5% and the thermochemical activation was carried out at 100°C. The maximum degree of protection was up to 85% in this case. IR spectroscopy revealed the formation of complex compounds and bulk associates that enhance the barrier properties of the protective layer.

Keywords: corrosion, preservation formulation, spectral methods of analysis, hexamethylenetetramine, hydrazine hydrate

Int. J. Corros. Scale Inhib., 2025, 14, no. 1, 194-205
doi: 10.17675/2305-6894-2025-14-1-12

Download PDF (Total downloads: 14)

Back to this issue content: 2025, Vol. 14, Issue 1 (pp. 1-... (in progress))