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The article discusses the issues of friction and wear testing of a carbon-carbon composite of tribological purpose. The experiments were performed on a bench, the work of which is based on the absorption of kinetic energy of rotating masses with materials intended for use in brake devices. The friction coefficient and wear rate of the friction carbon composite in braking mode are investigated. Ring samples are divided into 6 sectors, in each of which, after testing, the parameters of the roughness of the friction surfaces and wear during one braking are determined. The value of linear wear was determined as the average value over 6 sectors for rotating and stationary samples. Changes in the structure of friction surfaces are investigated. Metrological support of the experiments was carried out by statistical processing of the results. The errors in measuring the coefficient of friction and wear rate are determined. High resistance to energy absorption and thermal shock of the studied frictional material is established, which open up the prospects for the mass use of C/C in transport brake devices.

Tribological tests of frictional carbon/carbon composite in braking mode