Radiation stability of the cerium dioxide/boron nitride nanosheets/water-based polyurethane anti-corrosion coating

The results indicated that the composite coating exhibits optimal performance when the mass ratio of CeO2 to WPU-BNNSs is 1:1 and the total loading is 1 %. After 14 days of immersion, the low-frequency impedance modulus (|Z|0.01Hz) of this composite coating reached 3.15×106 Ω·cm², which is one order of magnitude higher than that of pure WPU. After neutron irradiation, the impedance modulus remained at 1.72×106 Ω·cm², representing a 45% reduction compared to the pre-irradiation value.

This is significantly less than the 80% reduction observed in pure WPU, demonstrating excellent radiation stability. This study provides an optimized strategy for radiation resistant anti-corrosion coatings for metal protection in radiation environments, offering both theoretical and practical significance.