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Graphene is a two-dimensional sheet of regular hexagonal honeycomb lattice formed by sp 2 hybrid orbital bonding, with only one layer thickness of a single atom, which is known as the "super king" of the 21st century. Previous studies have shown that cerium oxide-graphene oxide (CeO 2 -GO(4:1)) nanocomposites eliminated the agglomeration of graphene to some extent and the CeO 2 -GO(4:1) epoxy coating could be prepared with good anti-corrosion performance. In this paper, CeO 2 -GO(4:1) nanocomposites were prepared by the hydrothermal synthesis method, and the three-electrode method was used for electrochemical tests. The state evolution of CeO 2 -GO(4:1)/EP coating and the synergy between CeO 2 -GO(4:1)/EP and corrosion inhibitor in simulated seawater solution with different concentrations (20%, 40%, 60%) were analyzed and illustrated by Optical Microscope (OM) characterization, Open Circuit Potential (OCP), Electrochemical alternating current Impedance Spectroscopy (EIS), Mott-Schottky curve and Tafel curve. The results indicated that CeO 2 -GO(4:1) nanocomposites showed good corrosion resistance in a marine environment. This research lays a solid theoretical foundation for the application of cerium oxide-modified graphene oxide anticorrosive coating in marine engineering.

Research on the Anticorrosion Properties of CeO2-GO/EP Nanocomposite Coating in Simulated Sea Water