Carbon-based materials in friction units at high temperatures

Abstract

Abstract The issues of the friction engagement of a carbon-carbon composites with steel at high temperatures are studied in the article. The statement on the admissibility of using a carbon composite in friction units at high temperatures is substantiated. Antifriction properties of carbon composite are investigated for friction against steel in the speed range 0.05 - 0.25 m / s and contact pressure 0.3…1 MPa. It has been shown experimentally that the “Hardcarb-T” material has better antifriction properties than the “Argalon-2D” material in the temperature range of + 300 … + 700 ° C and a velocity of 0.16 m / s. The coefficient of friction of the “Hardcarb-T” material in the temperature range 300 … 700 ° C varies from 0.28 to 0.38. With a load of 1.0 MPa and a sliding speed of 0.16 m / s, the friction coefficient of the “Argalon-2D” material is 38% higher than that of the “Hardcarb-T” material.