Method for preparing an anticorrosive surface layer of a metal material in a marine environment by laser

A method for preparing an anticorrosive surface layer of a metal material in a marine environment by laser, which is characterized in that it comprises the following steps:

• (Step 1) a laser cladding technology is used to prepare a cladding surface layer on the surface of metal material, wherein the metal material is pretreated and dried, and the laser is combined with a coaxial powder feeding method to melt a cladding material and the surface layer of the metal material at the same time, and the cladding surface layer is obtained on the surface of the metal material;
• (Step 2) an ultrafast laser processing technology is used to prepare a hydrophobic surface on the cladding surface, wherein the ultrafast laser is selected from picosecond laser or femtosecond laser, and he a pulse width is less than 10-11s.