New anti-corrosion pigment based on natural aluminosilicate with a layered structure
DOI:
https://doi.org/10.31891/2079-1372-2026-120-2-60-65Keywords:
corrosion, montmorillonite, ion-exchange minerals, anti-corrosion pigment, clay, aluminium alloyAbstract
According to scanning electron microscopy results the montmorillonite particles are in the form of curved plates that tend to agglomerate. Using EDX analysis, it was established that the initial montmorillonite was Ca, Mg – form of montmorillonite. Due to the mechanochemical modification of montmorillonite, intercalation of Zn2+ cations into the layered structure of natural montmorillonite occurred, and phosphate anions were able to form surface adsorption complexes with positively charged edge surfaces of montmorillonite through the acidic environment of the crystal hydrate of the salt Zn(H2PO4)2·2H2O, while the content of zinc and phosphorus is ~5 wt. % and ~ 4 wt. %, respectively. It was established that the obtained pigment based on mechanochemically modified montmorillonite increases the corrosion resistance of the aluminium alloy in an acid rain environment with pH = 4.5 by potentiodynamic polarization and electrochemical impedance spectroscopy methods. The inhibitory effect of mechanochemically modified montmorillonite consists in the release of Zn2+ cations from montmorillonite containers, which, interacting with OH– anions, form zinc hydroxides at the cathode sites, and the slowing down of electrochemical corrosion occurs due to the formation of phosphates at the anode sites of the aluminium alloy. It was established that the protection degree of the aluminium alloy in the acid rain environment with mechanochemically modified montmorillonite was above 90 %. Thus, montmorillonite, an aluminosilicate mineral of natural origin, is a promising material for obtaining new eco-friendly anti-corrosion pigments in paint and varnish coatings to ensure long-term protection of metal products
References
Lyon S.B. Advances in corrosion protection by organic coatings: What we know and what we would like to know / S.B. Lyon, R. Bingham, D.J. Mills // Prog. Org. Coat. – 2017. – Vol. 102. – P. 2–7. – DOI: https://doi.org/10.1016/j.porgcoat.2016.04.030
Sorensen P.A. Anticorrosive coatings: A review / P.A. Sorensen, S. Kill, K. Dam-Johansen, C.E. Weinell // J. Coat. Tenchnol. Res. – 2009. – Vol. 6. – P. 135–176. – DOI: https://doi.org/10.1007/s11998-008-9144-2
Vander Kloet J. The role of chromate in filiform corrosion inhibition / J. Vander Kloet, W. Schmidt, A.W. Hassel, M. Stratmann // Electrochim. Acta. – 2003. – Vol. 48. – P. 1211–1222. – DOI: https://doi.org/10.1016/S0013-4686(03)00256-1
Henriques R. R. Sepiolite modified with phosphonium ionic liquids as anticorrosive pigment for epoxy coatings / R. R. Henriques, B. G. Soares // Appl. Clay Sci. – 2021. – Vol. 200. – P. 105890. – DOI: https://doi.org/10.1016/j.clay.2020.105890
Khan A. Hybrid Halloysite Nanotubes as Smart Carriers for Corrosion Protection / A. Khan, A. Hassanein, S. Habib, M. Nawaz, R. A. Shakoor, R. Kahraman // ACS Appl. Mater. Interfaces. – 2020. – Vol. 12(33). – P. 37571–37584. – DOI: https://doi.org/10.1021/acsami.0c08953
Williams G. Inhibition of corrosion-driven organic coating disbondment on galvanised steel by smart release group II and Zn(II)-exchanged bentonite pigments / G. Williams, H.N. McMurray, M.J. Loveridge // Electrochim.Acta. – 2010. – Vol. 55. – P. 1740–1748. – DOI: https://doi.org/10.1016/j.electacta.2009.10.059
Dantas de Mendonça y Araújo S. E. Bentonite Clay and its Potential Applications / S. E. Dantas de Mendonça y Araújo, A. L. Roberto, J.E. Pereira Farias, J. A. Oshiro Junior // MRF. – 2025. – Vol. 173. – P. 124–144. – DOI: https://doi.org/10.21741/9781644903452-5
Williams G. Smart release corrosion inhibitor pigments based on organic ion-exchange resins / G. Williams, S. Geary, H.N. McMurray // Corros. Sci. – 2012. – Vol. 57. – P. 139–147. – DOI: https://doi.org/10.1016/j.corsci.2011.12.024
Egloffstein Th. A. Natural bentonites - influence of the ion exchange and partial desiccation on permeability and self-healing capacity of bentonites used in GCLs / Th. A. Egloffstein // Geotext. Geomembr. – 2001. – Vol. 19. P. 427–444. – DOI: https://doi.org/10.1016/S0266-1144(01)00017-6
Zhou X. Smart corrosion inhibitors for controlled release: A review / X. Zhou, Q. Dong, D. Wei, J. Bai, F. Xue, B. Zhang, Zh. Ba, Zh. Wang // Corros. Eng. Sci. Technol. – 2023. – Vol. 58(2). P. 190–204. – DOI: 10.1080/1478422X.2022.2161122
Korniy S.A. Influence of a phosphate–nitrate composition on the corrosion of mechanically activated aluminum alloy / S.A. Korniy, І.М. Zin, О.P. Khlopyk, М.B. Tymus, М. Ya. Holovchuk // Mater. Sci. – 2022. – Vol. 57. P. 284–290. – DOI: 10.1007/s11003-021-00543-0
Shukla S. K., Quraishi M. A., Ebenso E. E. Adsorption and corrosion inhibition properties of cefadroxil on mild steel in hydrochloric acid // International Journal of Electrochemical Science. – 2011. – 6. – P. 2912–2931. – DOI: https://doi.org/10.1016/S1452-3981(23)18228-9
Korniy S. Aluminium alloy corrosion inhibition by composite pigment based on nanoporous synthetic zeolite and zinc dihydrogen phosphate / S. Korniy, I. Zin, M. O. Danyliak, O. Khlopyk, B. Datsko, M. Holovchuk // Appl. Nanosci. – 2023. – Vol. 13. P. 7257–7266. – DOI: https://doi.org/10.1007/s13204-023-02888-1
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