Superamphiphobicity and electroactivity enabled dual physical/chemical protections in novel anticorrosive nanocomposite coatings

Superamphiphobic and electroactive composite coating on aluminum substrate was successfully fabricated by integrating epoxy, polyaniline (PANI), fluorinated ethylene propylene , carbon nanotubes and SiO 2 nanoparticles into a two-layer coating configuration with nano/micro hierarchical surface structure. The composite coating demonstrates strong adhesion, excellent wear resistance and durable anti-wettability. The electrochemical tests demonstrated significantly enhanced anticorrosion performance by surface barrier effect of the superamphiphobic coating and redox catalytic capability of embedded electroactive PANI. The design principle of the multi-functional coatings will definitely benefit the advancement of durable anti-corrosive coatings and the achieved superior properties will promise a wider engineering applications in petroleum related industries.