METHOD OF PRODUCING PROTECTIVE COATINGS Russian patent published in 2014 - IPC C23C10/30 C23C10/20 

FIELD: chemistry.

SUBSTANCE: method of producing protective coatings includes loading articles into a heating apparatus, heating the articles in contact with a zinc-containing saturating mixture and holding at temperature needed to form the required coating thickness and unloading the articles. The saturating mixture used is a polymer-based zinc-containing suspension with the following content of components, wt %: zinc powder 40-95 and polymer binder solution 60-5. The suspension in amount of 0.5-3.0% of the weight of zinc-coated articles is pre-deposited on the surface of the articles in an even layer. After curing the polymer, the articles are placed inside the heating apparatus, heated to temperature higher than 250°C and held to enable formation of the required coating thickness.

EFFECT: obtaining a high-quality protective coating on metal articles in a wide range of dimensions of the zinc-coated articles and thickness of the applied protective coatings.