Modification of the friction surface as a way to increase antifriction

Abstract

Abstract The paper considers high-temperature tribological tests of carbon-containing materials during friction in a pair with steel 40X13 in the temperature range from +20 to +800 °C in atmospheric conditions. The research results showed that modification of the friction surface of the “Hardcarb-T” material in selenium and polytetrafluoroethylene vapors during friction against steel 40X13 improves the antifriction properties of the friction surface. The spread of values of the coefficient of friction of the material “Hardcarb-T”, treated in vapors of selenium and polytetrafluoroethylene, at a load of 0.5 MPa and a temperature of +500 °C in the speed range 0.05-0.25 m / s is 0.25 … 0.30 thirty. The coefficient of friction of the modified surface at a sliding speed of 0.05 m / s is 21% less than that of the untreated one.