Effect of Sintering Schedule on the Microstructure of Carbon Nanotubes Reinforced Alumina Fabricated by SPS Method

Abstract:

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Carbon nanotubes reinforced alumina was fabricated by spark plasma sintering method. When adding 0.2wt% nanotubes, the fracture toughness of the composites prepared increases 19% compared with the pure alumina ceramics. The effect of sintering schedule on microstructure and mechanical properties is investigated systematically. Microstructure studies reveal that at high sintering temperature, the nanotubes tend to gather in the gaps surrounded by three or more grains in a flocculent state, which leads to poor mechanical properties. Raman spectrum indicates that long sintering duration may cause serious nanotubes destruction and lower the mechanical properties.

Info:

Periodical:

Edited by:

Takashi Goto, Yibing Cheng, Zhengyi Fu and Lianmeng Zhang

Pages:

288-291

DOI:

10.4028/www.scientific.net/AMR.66.288

Citation:

L. W. Huang et al., "Effect of Sintering Schedule on the Microstructure of Carbon Nanotubes Reinforced Alumina Fabricated by SPS Method", Advanced Materials Research, Vol. 66, pp. 288-291, 2009

Online since:

April 2009

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$35.00

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