Fig. 1. Schematic of laser processing equipment and laser path

Fig. 2. Schematic of superhydrophobic surface preparation

Fig. 3. Sample morphology under different energy densities. (a) 0 J⋅cm-2; (b) 5J⋅cm-2; (c) 10J⋅cm-2; (d) 20J⋅cm-2; (e) 40J⋅cm-2

Fig. 4. Three-dimensional topography under different energy densities. (a) 0 J⋅cm-2; (b) 5J⋅cm-2; (c) 10J⋅cm-2; (d) 20J⋅cm-2; (e) 40J⋅cm-2

Fig. 5. Contact angle and sliding angle of magnesium alloy surface under different laser power densities

Fig. 6. EDS diagrams of magnesium alloy samples before and after superhydrophobic treatment. (a) Original magnesium alloy; (b) superhydrophobic magnesium alloy

Fig. 7. Comparison of polarization curve results between untreated surface and superhydrophobic treated surface

Fig. 8. Wetting model of NaCl solution on superhydrophobic magnesium alloy surface

Fig. 9. Variation diagram of contact angle and sliding angle of superhydrophobic magnesium alloy with time

Fig. 10. Self-cleaning diagram of superhydrophobic magnesium alloy

Fig. 11. Self-cleaning effect of magnesium alloy surface. (a) Original magnesium alloy surface; (b) superhydrophobic magnesium alloy surface