Superhydrophobic aluminum alloy surface: Fabrication, structure, and corrosion resistance

The corrosion potential (Ecorr) of the aluminum alloy positively increases while the corrosion current density (icorr) decreases with the increase of the water contact angle, which indicates that the instantaneous corrosion rate of aluminum alloy decreases with the increase of the water contact angle. Consequently, it can be found that the aluminum alloy with higher water contact angle has better corrosion resistance, and the superhydrophobic aluminum alloy has excellent corrosion resistance.