Aligned Carbon Nanotube-Reinforced Silicon Carbide Composites Produced by Chemical Vapor Infiltration
A chemical vapor infiltration (CVI) technique was used to overcome most of the challenges involved in fabricating exceptionally-tough CNT/SiC composites. Nanotube pullout and sequential breaking and slippage of the walls of the CNTs during failure were consistently observed for all fractured CNT/SiC samples. These energy absorbing mechanisms result in the fracture strength of the CNT/SiC composites about an order of magnitude higher than the bulk SiC. The CVI-fabricated CNT/SiC composites have an strongly-bonded tube/matrix interface and an amorphous, crack-free SiC matrix, enabling the composites to withstand oxidization at 700–1600 °C in air.
Published in Carbon, Volume 49, Issue 7, 2011, pages 2475-2482.
(c) Elsevier, 2011.
Zhanjun Gu, Yingchao Yang, Kaiyuan Li, Xinyong Tao, Gyula Eres, Jane Y. Howe, Litong Zhang, Xiaodong Li, and Zheng Wei Pan, "Aligned Carbon Nanotube Reinforced Silicon Carbide Composites by Chemical Vapor Infiltration," Carbon, 49 (2011) 2475-2482. http://dx.doi.org/10.1016/j.carbon.2011.02.016