A sustainable anti-corrosive coating of epoxy resin-based Ce–Mn oxide nanocomposite in salt-spray and marine environments

Abstract

Nano-composites with a unique morphology, high thermal characteristics, and flexibility have garnered considerable attention in recent years. Herein, we report the corrosion resistance performance of an epoxy resin-based Ce–Mn metal oxide nanocomposite, Ce oxide, and Mn oxide, synthesised from mixed ligand complexes. The anti-corrosion properties were evaluated using salt-spray and marine-water corrosion tests by electrochemical methods. The inhibition efficiency was evaluated in 5% NaCl and marine water over a period of more than 120 days. Morphological studies reveal the effective encapsulation of the nano-composite in epoxy resin. The diffraction technique was employed to investigate the assembly and morphology of the epoxy coating, as assessed by scanning electron microscopy. The results show that CeMnO₃ has enhanced anti-corrosion properties compared with CeO₂ and Mn₂O₃. The metal nanocoating efficiently protects mild steel by providing barrier properties against ions responsible for rusting, signifying its usefulness as a next-generation anti-corrosive coating for an eco-friendly environment. By offering enhanced protection, this innovative coating will extend the lifespan of structures and minimize environmental degradation.