Study on the In Situ Growth of Carbon Nanotubes for the Reinforcement of C_f/SiC Composite Fabricated by CVI+PIP Process

Abstract:

C_f/SiC composites were fabricated through in situ growth of carbon nanotubes (CNTs) on three-dimensional needle-punched carbon fabric via chemical vapor deposition and polymer impregnation and pyrolysis process. The mechanical and thermal properties of the composites were investigated. The flexural strength and fracture toughness were decreased due to the fiber volume fraction loss and much shorter pull-out length of fibers which was caused by the higher interfacial bonding strength between fiber and matrix after the growth of CNTs. Brittle fracture character of CNTs was observed due to the strong interfacial bonding strength between CNTs and matrix. The parallel thermal conductivity and perpendicular thermal conductivity were improved to 14.5% and 8.0% respectively.

• Periodical: Materials Science Forum (Volumes 745-746)
• Pages: 582-586
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.745-746.582
• Online since: February 2013
• Authors: Jian Bao Hu, Shao Ming Dong, Xiang Yu Zhang, Zhen Wang, Hai Jun Zhou, Ping He, Bin Wu
• Keywords: Carbon Nanotube (CN), C_f/SiC, Composite, CVI+PIP

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