Novel metal-organic super-hydrophobic surface fabricated by nanosecond laser irradiation in solution

Abstract

This work aims to propose a newly-emerged method using laser irradiation in liquid for the fabrication of metal-organic highly hydrophobic aluminum surface with excellent corrosion resistant performance. The corrosion results revealed that the laser-induced porous structure with ovoid-like particles, and simultaneously integration of low-free-energy functional groups (-CH2, -CF2 and -CF3) contributed to the super-hydrophobicity, enhancing corrosion resistance due to the effect of Laplace pressure and air-cushion formation within the porous structures. The possible chemical reactions during laser irradiation process in liquid were proposed. The explosive ejection mechanism was proposed to explain the generation of micro/nano particles with inherent pores. This facile approach offers a new route to fabricate super-hydrophobic surface with excellent mitigation of metallic corrosion.