FIELD: construction industry; chemistry.
SUBSTANCE: ceramic coating is applied on carbon-bearing material for product protection from oxidation in the air at high operation temperatures. Protection method of carbon-bearing materials by silicon carbide includes preparation of mixture from carbon-bearing compound in organic solvent with soluble silicon-bearing compound treated by hydrolysis catalyst, hydrolysis. Then this mixture heated up to 40÷90°C is used for soaking carbon-bearing materials with the application of ultrasonic influence till gel formation. Soaked material is dried first at 60÷80°C within 10÷24 hours, then at 100÷140°C within 4÷12 hours, after that there performed is thermal treat first at 450÷1000°C and depression 1·10-2÷1·10-1 kPa within 1÷4 hours, then the temperature is increased up to 1100÷1400°C and soaked material is held within 4÷20 hours at depression 10-5÷10-2 kPa.
EFFECT: exclusion of carbon-bearing materials degradation, and increase of oxidation resistance.
4 cl, 2 tbl, 12 ex
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