Effects of CNT Addition on Mechanical Properties, Electric Conductivity and Oxidation Resistance of Al₂O₃-TiC Composite

Abstract:

Effects of carbon nanotubes (CNT) addition on mechanical properties, electric conductivity and oxidation resistance of CNT/Al₂O3-TiC composite were investigated. It was found that flexural strength, Young’s modulus and fracture toughness of the composites were improved by addition of more than 2 vol%-CNT. In the composites with more than 3 vol%-CNT, the oxidation resistance of the composite was degraded. In comparison with Al₂O3-26vol%TiC sample as TiC particle-percolated sample, the Al₂O3-12vol%TiC-3vol%CNT sample, which is not TiC particle-percolated sample, shows almost the same mechanical properties and electric conductivity, and also shows thinner oxidized region after oxidation at 1200°C due to less TiC in the composite.

• Periodical: Materials Science Forum (Volume 761)
• Pages: 83-86
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.761.83
• Online since: July 2013
• Authors: Hideaki Sano, Junichi Morisaki, Guo Bin Zheng, Yasuo Uchiyama
• Keywords: Al₂O₃-TiC Composite, CNT Addition, Electric Conductivity, Mechanical Property, Oxidation Resistance

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