Corrosion-resistant SiO2-graphene oxide/epoxy coating reinforced by effective electron beam curing

The development of an effective approach to fabricating superior anti-corrosion epoxy resin-based coating has long been a desirable goal in the steel industry, but many challenges remained. Herein, we fabricated a SiO 2 -graphene oxide filled silane-treated resin (SiO 2 -GO/HEP) coating with a protection efficiency of ∼99.995 % via an electron beam (EB) curing technology. The complete curing took <1 min at room temperature. The corrosion voltage and corrosion current density of synthetic SiO 2 -GO/HEP coating achieved −0.2 V and 2.1 × 10 −9 A·cm −2 , respectively. The impedance modulus was increased by 4 orders of magnitude compared with pure epoxy coating. Our findings demonstrated that replacing conventional UV curing with EB curing significantly reduced the current density from 2 × 10 −7 A·cm −2 to 2.1 × 10 −9 A·cm −2 , and the water absorption rate decreased from 1.05 % to 0.13 %. As a result, our combined strategy provided a new and efficient anticorrosion nanocomposite structure, advancing the EB curing technology.