To read this content please select one of the options below:

Ce-loaded silica nanoparticles in the epoxy nanocomposite coating for anticorrosion protection of carbon steel

Thien Vuong Nguyen (Institute for Tropical Technology, Vietnam Academy of Science and Technology, Hanoi, Vietnam)
Dai Lam Tran (Institute for Tropical Technology, Vietnam Academy of Science and Technology, Hanoi, Vietnam)
Tuan Anh Nguyen (Institute for Tropical Technology, Vietnam Academy of Science and Technology, Hanoi, Vietnam)
Thi Thanh Huong Nguyen (Institute for Tropical Technology, Vietnam Academy of Science and Technology, Hanoi, Vietnam)
Phi Hung Dao (Institute for Tropical Technology, Vietnam Academy of Science and Technology, Hanoi, Vietnam)
Van Phuc Mac (Institute for Tropical Technology, Vietnam Academy of Science and Technology, Hanoi, Vietnam)
Minh Thanh Do (Institute for Tropical Technology, Vietnam Academy of Science and Technology, Hanoi, Vietnam)
Thi Mai Nguyen (University of Transport and Communications, Hanoi, Vietnam)
Thi My Linh Dang (Graduate University of Science and Technology, Hanoi, Vietnam)

Anti-Corrosion Methods and Materials

ISSN: 0003-5599

Article publication date: 27 June 2022

Issue publication date: 4 August 2022

61

Abstract

Purpose

This study aims to explore how the inhibitor-loaded nanocontainers can be used in the epoxy coating for protection of steel against corrosion. A self-healing anticorrosive coating can be easily fabricated by embedding the inhibitor-loaded nanocontainers into the epoxy coating matrices. For this purpose, first, cerium (a catholic corrosion inhibitor) is encapsulated into silica nanoparticles (SiO2@Ce). Thereafter, an epoxy nanocomposite coating has been prepared on steel substrate using these SiO2@Ce nanoparticles as nanofillers.

Design/methodology/approach

To examine the effect of SiO2@Ce nanocontainers on mechanical properties of epoxy coating, the abrasion resistance, impact resistance and adhesion strength of coating have been evaluated. To reveal the effect of SiO2@Ce nanocontainer on corrosion behavior of epoxy-coated steel, the electrochemical impedance spectroscopy (EIS) has been conducted in NaCl solution.

Findings

Transmission electron microscopy and scanning electron microscopy/Energy-dispersive X-ray spectroscopy analyses indicate that Ce3+ cations have been successfully loaded into the surface of silica nanoparticles (at the content of approximately 2 Wt.%). Mechanical tests of epoxy nanocomposite coatings indicate that the nanocomposite coatings with nanoparticles content of 2.5 Wt.% provide the highest values of abrasion resistance, impact resistance and adhesion strength. EIS results show that the presence of SiO2@Ce3+ nanocontainers increases both coating resistance and polarization resistance. Along with the improvement the coating barrier performance, Ce inhibitor plays an important role in improving the anticorrosive performance at the steel–electrolyte interface.

Originality/value

The application of self-healing epoxy/SiO2@Ce nanocomposite coatings for the protection of carbon steel is very promising.

Keywords

Acknowledgements

The authors would like to thank the financial support of the Vietnam National Foundation for Science and Technology Development (NAFOSTED, Grant # 104.02-2020.26).

Citation

Nguyen, T.V., Tran, D.L., Nguyen, T.A., Nguyen, T.T.H., Dao, P.H., Mac, V.P., Do, M.T., Nguyen, T.M. and Dang, T.M.L. (2022), "Ce-loaded silica nanoparticles in the epoxy nanocomposite coating for anticorrosion protection of carbon steel", Anti-Corrosion Methods and Materials, Vol. 69 No. 5, pp. 514-523. https://doi.org/10.1108/ACMM-03-2022-2629

Publisher

:

Emerald Publishing Limited

Copyright © 2022, Emerald Publishing Limited

Related articles