Preparation and properties of C/C-SiC brake composites fabricated by warm compacted-<Emphasis Type="Italic">in situ</Emphasis> reaction |
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Authors: | Zhuan Li Peng Xiao Xiang Xiong |
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Institution: | (1) Department of Mechanical Engineering and Energy Processes, Southern Illinois University, Carbondale, USA |
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Abstract: | 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 cm3·J−1. These results show that the C/C-SiC brake composites are the promising candidates for advanced brake and clutch systems. |
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