Preparation method of super-hydrophobic ternary alloy coating as well as obtained product and application of super-hydrophobic ternary alloy coating

The invention discloses a preparation method of a super-hydrophobic ternary alloy coating, which comprises the following steps: stirring in an ice-water mixed bath, and constructing an open honeycomb porous titanium template with a through-hole structure on the surface of pure titanium by adopting an anodic oxidation method; a honeycomb porous titanium template is used as a matrix, a double-pulse electrodeposition method is adopted, the current density is regulated and controlled in two steps, stirring is carried out, and a Ni-Co-Zn electrodeposition coating is obtained; after artificial aging or natural aging is carried out, a large amount of ZnO dendritic crystals are promoted to grow and form a xanthium sibiricum-like spherical crown texture, and the xanthium sibiricum-like spherical crown texture has super-hydrophobicity. The invention also discloses the application of the coating in a waterproof self-cleaning PCB (Printed Circuit Board). According to the method, the super-hydrophobic surface can be obtai