The present work is on production of silicon carbide-based ceramic matrix composites (CMC) reinforced with carbon fibers, the so called С_f/SiС-composites. Because of the extreme hardness and high abrasion resistance of SiC such CMCs belong to the most promising advanced materials for frictional applications. In particular С_f/SiС-composites-based brake disks and pads for passenger cars have been developed in the last few years. An efficient way to obtain С_f/SiС-composites is a methods based on Liquid Silicon Infiltration (LSI) process. In this work the production of the С_f/SiС-composite involved forming the C_f-reinforced plastic preforms from chopped carbon fibre and phenolic resin, carbonization of the perform to produce C_f-reinforced coke matrix (С_f/С-composite) with subsequent perform siliconizing by silicon melt. The phenolic resin contained powdered carbon, silicon carbide and other fillers. Different CMC samples were produced with varying composition and ratio of initial components. The obtained CMC samples were characterized for their residual porosity, composition, microstructure, mechanical and tribotechnical prameters. Mechanical tests were used to determine the flexural strength and fracture toughness of the CMCs. Tribotechnical parameters (coefficient of friction and wear) were measured on the inertial stands which allow carrying out tests of frictional materials by the “plane-plane” scheme in conditions maximally close to real friction centres (frictional coupling, braces, clutches and etc.). Tribotechnical tests of С_f/SiС-composite have been carried out in combination with different riders. The correlation between the initial composition of the composite and its microstructure, physical-mechanical and tribotechnical properties is found and discussed.

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