CORROSION RESISTANCE OF GALVANIC NICKEL DEPOSITS AND ELECTROCHEMICAL ACTIVITY OF THEIR CORROSION PRODUCTS
DOI:
https://doi.org/10.20535/kpisn.2022.1-2.253045Keywords:
nickel coatings, corrosion products, nickel sulphides, corrosion activity, catalystAbstract
Background. Bright galvanic nickel coatings, with high sulphur content, are less corrosion resistant than matte. Bright nickel coatings are particularly susceptible to corrosion damage in conditions that simulate tropical humid climates and are characterized by the presence of acetic acid vapours.
Objective. The purpose of the paper is to investigate: corrosion resistance of galvanic nickel deposits in concentrated acetic acid and its vapours, electrochemical activity of sulphide-containing corrosion products of bright nickel coatings.
Methods. Potentiodynamic and cyclic volt-amperometry have been used to study the electrochemical activity of galvanic nickel deposits and their corrosion products. The corrosion rate of galvanic nickel deposits has been determined by gravimetric method. Investigation of surface morphology and composition of galvanic deposits were performed using scanning electron microscopy and X-ray fluorescence analysis.
Results.The increased electrochemical activity of sulphide corrosion products of bright nickel coatings is evidenced by an order of magnitude higher cathodic current densities of CVA curves obtained in acetate buffer solutions, in comparison with bright and matte nickel galvanic deposits. It has been shown that at the deposition of sulphide corrosion products of bright nickel coatings on matte nickel foil the corrosion rate of last one increase at the exposition in concentrated acetic acid and its vapours.
Conclusions. Significant intensifying effect of sulphur on the corrosion of galvanic nickel deposits in concentrated acetic acid and its vapours has been established. In particular, this can be explained by the decomposition of nickel sulphide (which incorporates in the coating) in acetic acid. Sulphur in the oxidation state (-2) interacts with passive oxide coatings to form an adsorbed monolayer, which leads to the transition of nickel to the active state. Further research will focus on a deeper study of the electrochemical properties of corrosion products of bright nickel coatings.
References
D.Y. Ushchapovskiy, S.V. Frolenkova, M.V. Byk, O.V. Linyucheva, T.I. Motronyuk, and V.V. Klus, “Effect of saccharin on corrosion resistance of bright Ni coatings under conditions simulating a wet tropical climate”,Materials Today: Proc.,vol. 6, pp. 171–177, 2019.doi: 10.1016/j.matpr.2018.10.091.
D. Yu. Ushchapovskiy, M. V. Byk, O. V. Linyucheva, S. V. Frolenkova, R. M. Red’ko, and V. V. Yakubenko, “Corrosion Resistance of Bright Nickel Coatings in the Vapor of Acetic Acid”, Mater. Sci., vol.55, pp. 656–663, 2020. doi: 10.1007/s11003-020-00356-7.
Ph. Marcus,Corrosion Mechanisms in Theory and Practice, 3thed.,Boca Raton:“CRC Press”, 2012,pp. 395–416. doi: 10.1201/b11020.
Ph. Marcus, A. Teissier, and J. Oudar,“The influence of sulphur on the dissolution and the passivation of a nickel-iron alloy. I. Electrochemical and radiotracer measurements”,Corrosion Science, vol. 24, pp. 259–268, 1984.
B. Yan, D. Krishnamurthy, Ch. H. Hendon, S. Deshpande, Y. Surendranath, and V. Viswanathan, “Surface Restructuring of Nickel Sulfide Generates Optimally Coordinated Active Sites for Oxygen Reduction Catalysis”,Joule, vol. 1, no. 3, pp.600–612, 2017. doi: 10.1016/j.joule.2017.08.020.
J. M. Falkowski, N. M. Concannon, B. Yan, and Y. Surendranath, “Heazlewoodite, Ni3S2: A Potent Catalyst for Oxygen Reduction to Water under Benign Conditions”,J. Am. Chem. Soc., vol.137, no. 25, pp. 7978–7981, 2015. doi: 10.1021/jacs.5b03426.
Y.F. Yuan, X.H. Xia, J.B. Wu, J.L. Yang, Y.B. Chen, and S.Y. Guo, “Nickel foam-supported porous Ni(OH)2/NiOOH composite film as advanced pseudocapacitor material”,Electrochimica Acta, vol.56, no. 6, pp. 2627–2632, 2011. doi:10.1016/j.electacta.2010.12.001.
T. Kurochenko, D. Ushchapovskyi, A. Kushmiruk, O. Linyucheva, andR. Redko, The investigation of corrosion activity of galvanic nickel deposits and their corrosion products,in International Young Scientists Conference on Materials Science and Surface Engineering MSSE2021: Proceedings “Materials Science and Surface Engineering (MSSE2021)”, рр. 201–204.
A. I. Kushmyruk, O. V. Kosohin, O. V. Linyucheva, V. A. Reveko, and Yu. S. Miroshnychenko,“Electrochemical Behavior of Porous Titanium Electrodes in Phosphoric Acid”,Mater. Sci., vol. 51,no. 3, pp. 429–435, 2015. doi: 10.1007/s11003-015-9859-z.
G.E. Badea, and T. Badea,“Electrochemical behavior of nickel in aqueous acetic acid solutions”,Revue Roumaine de Chimie, vol.53, no. 4, pp. 291–295, 2008.
I. Tabakovic, S. Riemer, K. Tabakovic, M. Sun, and M. Kief, “Mechanism of Saccharin Transformation to Metal Sulfides and Effect of Inclusions on Corrosion Susceptibility of Electroplated CoFe Magnetic Films”, J. Electrochem. Soc., vol. 153, no. 8, pp. 586–593, 2006. doi: 10.1149/1.2207821.
J.J. Carroll, andA.E. Mather,“The solubility of hydrogen sulphide in water from 0 to 90°C and pressures to 1 MPa”,Geochimica et Cosmochimica Acta,vol. 53, no. 6, pp. 1163–1170, 1989. doi:10.1016/0016-7037(89)90053-7.
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Copyright (c) 2022 Дмитро Ущаповський, Ольга Лінючева, Георгій Васильєв, Олександр Лінючев , Андрій Кушмирук , Раїса Редько , Гліб Підвашецький , Тарас Куроченко
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