Improvement of the corrosion resistance of aluminum bronze in sea water by deposition of oxide-ceramic coatings and inhibitor treatment

• S.M. Reshetnikov¹, E.V. Kharanzhevskiy¹, A.V. Tyukalov¹, A.R. Gazizyanova¹, F.Z. Gil’mutdinov², V.L. Vorob’yov², R.M. Zakirova¹, L.A. Sabanova¹ and G.G. Savenkov³

¹ Udmurt State University, Universitetskaya str., 1, 426034 Izhevsk, Russian Federation
² Udmurt Federal Research Center of the Ural Branch of the Russian Academy of Sciences, T. Baramzinoi str., 34, 426067 Izhevsk, Russian Federation
³ St. Petersburg State Technological Institute (Technical University), Moskovski avenue, 24-26/49 lit. A, 190013 St. Petersburg, Russian Federation

Abstract: The corrosion properties of aluminum bronze CuAl9Fe4Ni4Mn1 have been studied in a model environment simulating sea water under electrochemical corrosion conditions. Oxide-ceramic coatings were deposited on the surface and treatment with inhibitors was carried out to increase the corrosion resistance of the alloy. Oxide-ceramic coatings were applied by laser melting of powder mixtures on the surfaces of the samples using a fiber-optic short-pulse laser. Inhibitor treatment with solutions based on octanoic acid with nitrogen-containing compounds, such as benzotriazole, hydrazine hydrate and 2,4-dinitrophenylhydrazine, was carried out by impregnation. The phase composition, corrosion resistance in the environment simulating sea water, and surface of the samples were studied. The largest shift of the transpassivation potential to the positive region was observed for the TiO₂−ZrO₂ coatings. The mixture of octanoic acid and benzotriazole was the most efficient among the inhibitor mixtures studied.

Keywords: oxide-ceramic coating, transition metal oxides, anticorrosive properties, inhibitor treatment

Int. J. Corros. Scale Inhib., 2025, 14, no. 1, 97-108
doi: 10.17675/2305-6894-2025-14-1-6

Download PDF (Total downloads: 15)

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