FIELD: chemistry.
SUBSTANCE: multi-layered protective coating is formed on metal surface. First layer is formed from material, capable of interaction with water electrolyte and of changing electroconductivity property. Second layer is formed from hydroinsulating current-conducting material. Electrochemically active composite material, capable of interaction with water electrolyte, reduces its electric resistance in case of contact with water electrolyte and is formed by mixing component A and component B. Hydroinsulating low-resistance material for formation of second and the following layers of protective coating is formed by mixing component A1 and component B1. Coating includes first layer, formed from electrochemically active composite material and, at least, one second layer, formed from hydroinsulating low-resistance material.
EFFECT: possibility to prevent or sharply reduce sub-film corrosion by application of cathode protection.
4 cl, 6 tbl
