One-step solve-thermal process for the construction of anticorrosion bionic superhydrophobic surfaces on magnesium alloy

• One-step solve-thermal process was used to prepare biomimetic micro/nanostructures superhydrophobic surface.
• The as-prepared superhydrophobic surface had a contact angle of 158.5°.
• The superhydrophobic surface has an excellent corrosion resistance in 3.5 wt% NaCl solution.

Superhydrophobic surface with biomimetic micro/nanostructures was prepared in this study. The mammillaria-herrerae-like microspheres, carnation-like microclusters and carnation-petal-like nano-slices of biomimetic micro/nanostructures on magnesium alloy surface can create a stable superhydrophobic surface, which is similar to the “lotus leaf” structure. The as-prepared superhydrophobic surface had a contact angle of 158.5° and a sliding angle of 2.0°. Potentiodynamic polarization measurements demonstrated that the superhydrophobic surface greatly improved the corrosion properties of magnesium alloy in 3.5 wt% NaCl solution.

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