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

• Published in: International journal of minerals, metallurgy and materials Vol. 17; no. 4; pp. 500 - 505
• Main Authors: Li, Zhuan, Xiao, Peng, Xiong, Xiang
• Format: Journal Article
• Language: English
• Published: Beijing University of Science and Technology Beijing 01.08.2010; Springer Nature B.V; State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
• Subjects: Brakes; Carbon fibers; Ceramics; Characterization and Evaluation of Materials; Chemistry and Materials Science; Coefficient of friction; Composites; Corrosion and Coatings; Density; Flexural strength; Friction; Glass; Impact strength; Materials Science; Mechanical properties; Metallic Materials; Metallurgy; Modulus of rupture in bending; Natural Materials; Particulate composites; Porosity; SiC; Silicon carbide; Surfaces and Interfaces; Thin Films; Tribology; Wear mechanisms; Wear rate; 制动速度; 原位反应; 复合材料制备; 复合材料性能; 摩擦磨损性能; microstructure; tribological properties; C/C-SiC; ceramic matrix composites
• ISSN: 1674-4799; 1869-103X
• DOI: 10.1007/s12613-010-0348-y

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.