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Carbon fibre reinforced carbon and silicon carbide dual matrix composites(C/C-SiC) were fabricated by the warm compacted-in situ reaction.The microstructure,mechanical properties,tribological properties,and wear mechanism of C/C-SiC composites at different brake speeds were investigated.The results indicate that the composites are composed of 58wt%C,37wt%SiC,and 5wt%Si.The density and open porosity are 2.0 g.cm~(-3) and 10%,respectively.The C/C-SiC brake composites exhibit good mechanical properties.The flexural strength can reach up to 160 MPa,and the impact strength can reach 2.5 kJ.m~(-2).The C/C-SiC brake composites show excellent tribological performances.The friction coefficient is between 0.57 and 0.67 at the brake speeds from 8 to 24 m·s~(-1).The brake is stable,and the wear rate is less than 2.02×10~(-6) cm~3·J~(-1).These results show that the C/C-SiC brake composites are the promising candidates for advanced brake and clutch systems.
Carbon fiber reinforced carbon and silicon carbide dual matrix composites (C / C-SiC) were fabricated by the warm compacted-in situ reaction. Microstructure, mechanical properties, tribological properties, and wear mechanism of C / C-SiC composites at different brake speeds were investigated. The results indicate that the composites are composed of 58 wt% C, 37 wt% SiC, and 5 wt% Si. The density and open porosity are 2.0 g.cm -3 and 10% respectively. The C / C-SiC brake composites exhibit good mechanical properties. The flexural strength can reach up to 160 MPa, and the impact strength can reach 2.5 kJ.m -2. The C / C-SiC brake composites show excellent tribological performances.The The friction coefficient is between 0.57 and 0.67 at the brake speeds from 8 to 24 m · s -1. The brake is stable and the wear rate is less than 2.02 × 10 -6 cm -3 · J ~ (-1) .These results show that the C / C-SiC brake composites are the promising candidates for advanced brake and clutch systems.