Surface-modified cerium oxide as a corrosion inhibitor to enhance the performance of epoxy coatings
Anti-Corrosion Methods and Materials
ISSN: 0003-5599
Article publication date: 28 April 2023
Issue publication date: 13 June 2023
Abstract
Purpose
The study aims to investigate the anticorrosion performance of epoxy coatings using modified cerium oxide (CeO2) by terephthalic acid (CeO2-t) and fumaric acid (CeO2-f) as corrosion inhibitors.
Design/methodology/approach
The chemical state of CeO2-t, and CeO2-f were analyzed by infrared radiation (IR) and X-ray diffraction (XRD). The effect of different inhibitors on the coating properties was analyzed by neutral salt spray tests (NSST) and electrochemical impedance spectroscopy (EIS).
Findings
The results of IR and XRD illustrate that the modification of CeO2 was successful, and fumaric acid underwent a ring-opening reaction with epoxy resin (EP) in the coatings. The results of NSST and EIS showed that the coatings containing CeO2-f exhibited the best anticorrosion performance.
Originality/value
CeO2 is an effective inhibitor of the organic coatings. When surface modified, it is chemically bonded to EP, enhancing the anticorrosion performance of EP.
Keywords
Acknowledgements
This work was financially supported by Science and Technology Plan Project of Sichuan Province (No. 2020ZHCG0081), National Natural Science Foundation of China (No. 51801131).
Conflicts of interest: There are no conflicts of interest to declare.
Citation
Dong, Y., Zhang, Y., Cui, X.-J., Li, M., Xie, C. and Pan, Z. (2023), "Surface-modified cerium oxide as a corrosion inhibitor to enhance the performance of epoxy coatings", Anti-Corrosion Methods and Materials, Vol. 70 No. 4, pp. 149-156. https://doi.org/10.1108/ACMM-02-2023-2762
Publisher
:Emerald Publishing Limited
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