Combined application of rare-earth metal salts and superhydrophobic coatings as a way to increase the corrosion resistance of aluminum alloys
https://doi.org/10.61852/2949-3412-2025-3-3-121-129
Abstract
Corrosion inhibitors are used not only as separate protective agents, but also to enhance the anticorrosive properties of paint and conversion coatings on aluminum alloys. The use of superhydrophobic (SHP) coatings is a fairly promising and effective method of protecting metals and alloys, however, the low stability of SHP layers in aqueous media significantly limits their practical application. This article discusses a combined corrosion protection method for aluminum alloy D16 in chloride solutions. The method is based on increasing the stability and preserving the SHP properties of coatings made from stearic and octadecylphosphonic acids by adding small additives of inhibitors (salts of rare-earth metals cerium and yttrium).
About the Authors
A. A. KudelinaRussian Federation
A. M. Semiletov
Russian Federation
Yu. I. Kuznetsov
Russian Federation
References
1. L.F. Mondolfo, Aluminum Alloys: Structure and Properties, Elsevier: UK, 2013, 982 p.
2. M.W. Kendig and R.G. Buchheit, Corrosion inhibition of aluminum and aluminum alloys by soluble chromates, chromate coatings, and chromate-free coatings, Corrosion, 2003, 59, 379–400. doi: 10.5006/1.3277570
3. Kl. Xhanari and M. Finsgar, Organic corrosion inhibitors for aluminum and its alloys in chloride and alkaline solutions: A review, Arabian Journal of Chemistry, 2019, 12, 4646–4663. doi: 10.1016/j.arabjc.2016.08.009
4. Yu.I. Kuznetsov, Organic corrosion inhibitors: where are we now? A review. Part II. Passivation and the role of chemical structure of carboxylates, Int. J. Corros. Scale Inhib., 2016, 5, 282–318. doi: 10.17675/2305-6894-2016-5-4-1
5. J. De Damborenea, A. Cinde and M.A. Arenas, Corrosion inhibition with rare earth metal compounds in aqueous solutions, in book Rare Earth based Corrosion Inhibitors. Eds. M. Forsyth and B. Hinton, Woodhead Publishing, 2014, 319 p. doi: 10.1533/9780857093585.84
6. K.A. Yasakau, M.L. Zheludkevich, S.V. Lamaka and M.G.S. Ferreira, Mechanism of corrosion inhibition of AA2024 by rare-earth compounds, J. Phys. Chem. B, 2006, 110, 5515–5528. doi: 10.1021/jp0560664
7. P. Rodiс and I. Milosev, Corrosion inhibition of pure aluminium and alloys AA2024-T3 and AA7075-T6 by cerium(III) and cerium(IV) salts, J. Electrochem. Soc., 2016, 163, 85–93. doi: 10.1149/2.0431603jes
8. T. Hu, H. Shi, T. Wei, F. Liu, S. Fan and E-H. Han, Cerium tartrate as a corrosion inhibitor for AA 2024-T3, Corr. Sci., 2015, 95, 152–161. doi: 10.1016/j.corsci.2015.03.010
9. A.E. Hughes, J.M.C. Mol and I.S. Cole, The cost and availability of rare earth-based corrosion inhibitors, in book Rare Earth-based Corrosion Inhibitors. Eds. M. Forsyth and B. Hinton, Woodhead Publishing, 2014, 319 p. doi: 10.1533/9780857093585.291
10. G. Barati Darband, M. Aliofkhazraei, S. Khorsand, S. Sokhanvar and A. Kaboli, Science and Engineering of Superhydrophobic Surfaces: Review of Corrosion Resistance, Chemical and Mechanical Stability, Arab. J. Chem., 2020, 13, 1763–1802. doi: 10.1016/j.arabjc.2018.01.013
11. S.L. Zheng, C. Li, Q.T. Fu, M. Li, W. Hu, Q. Wang, M.P. Du, X.C. Liu and Z. Chen, Fabrication of self-cleaning superhydrophobic surface on aluminum alloys with excellent corrosion resistance, Surf. Coat. Technol., 2015, 276, 341–348. doi: 10.1016/j.surfcoat.2015.07.002
12. Z. Lu, P. Wang and D. Zhang, Super-hydrophobic film fabricated on aluminium surface as a barrier to atmospheric corrosion in a marine environment, Corr. Sci., 2015, 91, 287– 296. doi: 10.1016/j.corsci.2014.11.029
13. A.M. Semiletov, A.A. Chirkunov, O.Yu. Grafov and Yu.I. Kuznetsov, Stability of supehydrophobic layers formed by organic acids on the surface of aluminum alloy 6063, Coatings, 2022, 12, 1468. doi: 10.3390/coatings12101468
Review
For citations:
Kudelina A.A., Semiletov A.M., Kuznetsov Yu.I. Combined application of rare-earth metal salts and superhydrophobic coatings as a way to increase the corrosion resistance of aluminum alloys. Title in english. 2025;(3):121-129. (In Russ.) https://doi.org/10.61852/2949-3412-2025-3-3-121-129