Surface treatment method for moving part in sea

The invention belongs to the technical field of surface treatment, and particularly discloses a surface treatment method for a moving part in the sea. The method comprises the steps that cobalt, nickel, chromium, titanium, neodymium, titanium nitride and titanium boride are mixed, grinding is conducted after mixing is completed, laser cladding powder with the appropriate particle size is prepared, and then the laser cladding powder is adopted for conducting laser cladding on the moving part in the sea to complete surface treatment. According to the method, the moving part in the sea is subjected to surface treatment, the salt spray corrosion resistance, the microbial corrosion resistance and the chloride ion corrosion resistance of the moving part are remarkably improved, the obtained laser cladding layer has high hardness, and the wear resistance of the moving part is further improved. A laser cladding layer is compact and uniform, a ceramic phase is generated in situ and forms metallurgical bonding with a m