An environmentally friendly route to prepare hierarchical carbon/carbon–SiC composites by carbothermal reduction

✍ Scribed by Jincao Zhang; Ruiying Luo

• Book ID: 104009322
• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 522 KB
• Volume: 49
• Category: Article
• ISSN: 0008-6223
• DOI: 10.1016/j.carbon.2010.08.029

✦ Synopsis

Hierarchical carbon/carbon-SiC composites have been prepared by a carbothermal reduction process using impregnated silica as a precursor and 3D needle-punched C/C composites as templates at 1450 °C. Dense SiC layers surrounding the pyrocarbon were synthesized by further heat-treatments at 1600 °C. The resulting composites are composed of turbostratic carbon, b-SiC and 4H type a-SiC, and show pseudo-plastic fracture behavior and excellent toughness. The flexural strength of parallel and perpendicular direction to carbon fiber