COATING MATERIAL FOR PROTECTING METALS, PARTICULARLY STEEL, FROM CORROSION AND/OR SCALING, METHOD OF APPLYING COATING ONTO METALS, METALLIC ELEMENT

摘要

FIELD: chemistry.;SUBSTANCE: method involves applying coating material onto a metal substrate using a knife coater, by dipping, spray-lacquering, using rolls, by soaking or pouring. The coating material contains an easily oxidisable organic or organo-inorganic binder, with easily oxidisable organic components, and electroconductive metallic or non-metal filler. In order to ensure capacity for bonding, the binder also contains compounds which, when heated in reducing conditions at 840°C, form an electroconductive phase. The coating material can contain electroconductive compounds which are resistant to oxidative processes at high temperature, as well as lubricants, pigments, grease and metals. The metal substrate used is steel, a steel alloy or steel with a metal coating. After applying the coating material onto the substrate, the composite coating material/substrate is heated to temperature 600-1300°C. The applied coating layer changes its structure and serves as an adhesive underlayer for other coating materials.;EFFECT: obtained layer structure has sufficient electroconductivity, needed for application in common types welding, particularly dot welding.;13 cl, 4 ex