Electrospun fibers as delivery channels for inhibitors: Enhancing active protection in anti-corrosive coatings

Abstract

This study introduces a novel strategy for developing a self-healing anticorrosion coating for AZ31 Mg alloy, achieved by incorporating L-aspartic acid (L-Asp)-modified MXene sheets and Ce^3 + inhibitors into a polyacrylonitrile (PAN) electrospun three-dimensional vascular network within an epoxy matrix. The L-Asp modification improves MXene dispersion and stability, while the f-MXene-Ce³⁺@PAN network facilitates the controlled release of Ce³⁺ inhibitors in response to environmental stimuli. Electrochemical evaluation demonstrates notable enhancements in corrosion resistance, with the coating exhibiting robust barrier properties under intact conditions and efficient self-healing upon damage. This approach represents a promising advancement in long-term corrosion protection for aggressive environments.