▎ 摘　　要

The surface treated nano Zr2C by (3-aminopropyl)tris[2-(2-methoxyethoxy)ethoxy]silane (APTMEES) was mixed with graphene oxide (GO), and the resulting GO-APTMEES/Zr2C nanofiller was integrated into the epoxy resin (EP). Electrochemical impedance spectroscopy (EIS), polarization, and scanning electro-chemical spectroscopy (SECM) tests were used to evaluate the protection efficiency of epoxy coating on mild steel in the presence of varied concentrations of GO/APTMEES-Zr2C in seawater. The ideal weight proportion of GO-APTMEES/Zr2C in the epoxy matrix was discovered to be 2.0, which resulted in better coating performance. After 1 h of exposure to the marine environment, the coating resistance of EP-GO/ APTMEES-Zr2C was determined to be over 44.9 times higher than that of pure matrix. Even after 180 hin seawater, EIS tests revealed an improved coating resistance of EP-GO/APTMEES-Zr2C nanocomposite (6366.24 kO.cm2). Because of the coated substrate's superior resistance to anodic dissipation, SECM mea-surements revealed the least discharge of Fe2+ ions at the scratch of the EP-GO/APTMEES-Zr2C coating (1.2 I/nA). Zr2C was found in the rusted components, forming an outstanding inert film at the surface, according to FE-SEM/EDX analysis. The newly produced EP-GO/APTMEES-Zr2C composite had improved barrier properties and hydrophobic characteristics (WCA: 161 degrees), according to the findings. The mechan-ical characteristics of the epoxy matrix increased when GO-APTMEES/Zr2C was added. As a result, the EP-GO/APTMEES-Zr2C nanocomposite could be used as a coating material for industrial purposes.(c) 2022 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.