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Preparation and properties of C/C-SiC brake composites fabricated by warm compacted-in situ reaction

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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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Authors and Affiliations

  1. State Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, China

    Zhuan Li, Peng Xiao & Xiang Xiong

Authors
  1. Zhuan Li
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  2. Peng Xiao
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  3. Xiang Xiong
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Correspondence to Zhuan Li.

Additional information

This work was financially supported by the National High-Tech Research and Development Program of China (No.2006AA03Z560) and the Graduate Degree Thesis Innovation Foundation of Central South University (No.2008yb019).

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Li, Z., Xiao, P. & Xiong, X. Preparation and properties of C/C-SiC brake composites fabricated by warm compacted-in situ reaction. Int J Miner Metall Mater 17, 500–505 (2010). https://doi.org/10.1007/s12613-010-0348-y

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  • DOI: https://doi.org/10.1007/s12613-010-0348-y

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