Fabrication and mechanical evaluation of aligned multi-walled carbon nanotube sheet/alumina laminated ceramic composites

G. Yamamoto, K. Shirasu, Y. Nozaka, Y. Shimamura, Y. Inoue, T. Hashida

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Here we present a simple way of preparing an alumina ceramic material that contains aligned multi-walled carbon nanotube (MWCNT) layers, i.e., aligned MWCNT sheet/alumina laminated ceramics are prepared for the first time by using a filtration technique and spark plasma sintering (SPS) method. It is demonstrated that the introduction of the aligned MWCNT sheets is an effective approach to deflect cracks preventing catastrophic failure whilst raising the fracture toughness from 3.81 ± 0.09 MPa·m1/2 to 4.10 ± 0.10 MPa·m1/2 and work required to break the samples from 43 ± 7 J/m2 to 256 ± 70 J/m2. The electrical conductivities of the composites, containing 0.7 vol.% aligned MWCNT sheets, in directions both parallel and perpendicular to the MWCNT alignment reach values of 858.5 S/m and 117.2 S/m, respectively, compared with that of 10-10-10-12 S/m for monolithic alumina samples.

Original languageEnglish
Title of host publication16th European Conference on Composite Materials, ECCM 2014
PublisherEuropean Conference on Composite Materials, ECCM
ISBN (Electronic)9780000000002
Publication statusPublished - 2014 Jan 1
Event16th European Conference on Composite Materials, ECCM 2014 - Seville, Spain
Duration: 2014 Jun 222014 Jun 26

Publication series

Name16th European Conference on Composite Materials, ECCM 2014

Other

Other16th European Conference on Composite Materials, ECCM 2014
CountrySpain
CitySeville
Period14/6/2214/6/26

Keywords

  • Aligned carbon nanotubes
  • Ceramic
  • Composites
  • Mechanical properties

ASJC Scopus subject areas

  • Ceramics and Composites

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