Corrosion Resistance of CeO2-GO/Epoxy Nanocomposite Coating in Simulated Seawater and Concrete Pore Solutions

Xiaoyan Liu*, Zitao Wu, Yaoyao Lyu, Tianyu Li*, Heng Yang, Yanqi Liu, Ruidan Liu, Xian Xie, Kai Lyu, Surendra P. Shah

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Reinforced concrete structures in the marine environment face serious corrosion risks. Coating protection and adding corrosion inhibitors are the most economical and effective methods. In this study, a nano-composite anti-corrosion filler with a mass ratio of CeO2:GO = 4:1 was prepared by hydrothermally growing cerium oxide on the surface of graphene oxide. The filler was mixed with pure epoxy resin at a mass fraction of 0.5% to prepare a nano-composite epoxy coating. The basic properties of the prepared coating were evaluated from the aspects of surface hardness, adhesion grade, and anti-corrosion performance on Q235 low carbon steel subjected to simulated seawater and simulated concrete pore solutions. Results showed that after 90 days of service, the corrosion current density of the nanocomposite coating mixed with corrosion inhibitor was the lowest (Icorr = 1.001 × 10−9 A/cm2), and the protection efficiency was up to 99.92%. This study provides a theoretical foundation for solving the corrosion problem of Q235 low carbon steel in the marine environment.

Original languageEnglish (US)
Article number2602
JournalPolymers
Volume15
Issue number12
DOIs
StatePublished - Jun 2023

Keywords

  • cerium dioxide
  • erosion resistance
  • graphene oxide
  • nanocomposite coating
  • simulated concrete pore liquid

ASJC Scopus subject areas

  • General Chemistry
  • Polymers and Plastics

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