Method for preparing lyophobic surface by laser in liquid phase

The embodiment of the invention discloses a method for preparing a lyophobic surface by laser in a liquid phase, and relates to the field of mechanical design and manufacture. The method comprises the steps: ultrasonically cleaning a processing object for 6-8 minutes with an acetone solution; preparing a fluorinated solution with the mass fraction of 0.4-2% by adopting fluorides; putting the processing object into the fluorinated solution, processing the processing object by adopting a laser processing technology, and thus obtaining a microstructure array; taking out the processing target with the microstructure array, putting into a heat insulation box for heat treatment at 150-250 DEG C, and naturally cooling to room temperature after holding 1-2 hours. The method is suitable for processing the lyophobic surface of a microstructure on a metal material or a nonmetal solid material, and a lyophobic layer with a certain thickness is formed in the microstructure. The stability and the tribological properties of