Fabrication of super-hydrophobic micro-needle ZnO surface as corrosion barrier against corrosion in simulated condensation environment

A super-hydrophobic surface (SHS) which facilitates the micro-droplet self-bounce was fabricated over copper substrate with hydrothermal synthesis method. It was characterized with FE-SEM, XRD , and so forth, and its corrosion protection performance was evaluated with electrochemical measurement. It was demonstrated that the needle-cone structure of super-hydrophobic surface facilitates the micro-droplets self-bounce behavior. Self-bounce effect of super-hydrophobic surface can help to reduce the contact area between the water droplet and the surface, thereby reducing the corrosion process of substrate under simulated condensation environment. This research provides a novel direction for the development of corrosion protection methods.