Conclusions
A highly anticorrosion and self-cleaning superhydrophobic surface was successfully fabricated on AZ91D magnesium alloy by a facile and large-area method. The as-prepared superhydrophobic surface with hierarchical flowerlike structures has a high contact angle of 167.3 ± 1.3° and an ultra-low sliding angle of about 1°. Electrochemical measurements showed that the superhydrophobic surface has a great anticorrosion effect for bare magnesium alloy, indicating that the superhydrophobic surface can greatly improve the corrosion resistance of magnesium alloy. Besides, the resulting superhydrophobic surface has good chemical stability and long-term durability as well as the self-cleaning effect. We believe that this method will make it possible to achieve large-area fabrication of the superhydrophobic surface on magnesium alloy, thus expanding the application scope of magnesium alloy. And this method could also be used on other metal materials and extend the application of superhydrophobic surface.