A novel anti-oxygen composite coating and its corrosion resistance mechanism

To obtain environmentally friendly and highly efficient anticorrosive coatings, we elaborately designed novel filler with multiple protections. In this system, we used CeO 2 nanorods modified micron-scale MMT (CeO 2 &MMT) as the filler to fabricate epoxy (EP) coating at steel. For the first time, CeO 2 with oxygen vacancies was designed at the MMT sheet, greatly improving the corrosion resistance of EP coating. The impedance modulus of CeO 2 &MMT/EP coating maintained 10 11 Ω·cm 2 after 200 days in 3.5 wt% NaCl solution. Therefore, the work demonstrates that the novel passivation mechanism makes the CeO 2 &MMT/EP coating a very promising alternative for the conventional protection system.