Anti-corrosion and self-cleaning superhydrophobic coating on metal surface, preparation method and application thereof

The invention belongs to the technical field of material surface engineering, and discloses an anti-corrosion and self-cleaning superhydrophobic coating on the metal surface, a preparation method andapplication thereof. The preparation method comprises the steps: carrying out sand blasting treatment on a workpiece to be plated, then carrying out chemical etching treatment by using an etching liquid on the workpiece to be plated, and carrying out cleaning and blow-drying to obtain a pretreated workpiece; ultrasonically mixing metallic nickel or and cobalt salt, long straight chain alkanoic acid and ethanol to prepare a basic electroplating solution; and taking cobalt, nickel or cobalt-nickel alloy as an anode, taking the pretreated workpiece as a cathode, carrying out electroplating in thebasic electroplating solution, carrying out cleaning and blow-drying on the plated workpiece serving as an cathode after electroplating, and preparing on the metal surface. The basic electroplating solution for preparing the