Electrochemically Etched Superhydrophobic Surface on Aeronautic Steel with Anti-Icing, Self-Cleaning and Durability Property

The superhydrophobic surface on 30Cr2NiWVA aeronautic steel is fabricated via electrochemical etching and FAS modification. The results of scanning electron microscopy (SEM) show that, after electrochemically etching, the aeronautic surface is covered with rough coralloid-structure film. This surface demonstrates excellent corrosion protection, anti-icing and self-cleaning property. Additionally, this surface shows outstanding superhydrophobicity after anti-icing, self-cleaning test, and even after exposure to the air in the normal ambient environment for two years, proving the durability property of superhydrophobic aeronautic surface. The proposed method is simple and has great potential applications for large-scale applications in aircraft.