CARBON-ZINC COATING, COATING PRODUCTION METHOD AND COATED STRUCTURE Russian patent published in 2019 - IPC C23C22/53 C23C8/16 

FIELD: technological processes.

SUBSTANCE: invention relates to anticorrosive protection of metal structures. Method comprises cyclically exposing a surface of solid zinc metal or an alloy based thereon in a working atmosphere containing water and carbon dioxide, wherein at the beginning of the cycle, content of carbon dioxide in the working atmosphere is increased, which is higher compared to content of carbon dioxide in the natural atmosphere of the Earth, and conditions are created for formation on said surface of a heterogeneous reaction medium containing zinc, water and carbon dioxide, with the passage of chemical reactions in said medium involving water, carbon dioxide and zinc to form zinc carbonates. In the middle of the cycle, conditions for formation of a heterogeneous reaction medium on said surface and termination of said chemical reactions and the cycle is completed with formation on said surface of deposits containing zinc carbonates formed as a result of said chemical reactions during the cycle. Said deposits are formed as constituent parts of the obtained coating, and the number of exposure cycles is selected based on the desired degree of quality of the obtained coating. Invention covers also coating and galvanized structure.

EFFECT: invention provides an increase in the degree of corrosion protection of the surface of solid zinc metal or an alloy based thereon with a smaller thickness of the coating.

35 cl, 2 ex