Preparation and electrical properties of carbon nanotubes dispersed zirconia nanocomposites

T. Ukai, T. Sekino, A. Hirvonen, N. Tanaka, T. Kusunose, T. Nakayama, K. Niihara

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)

Abstract

Multi Wall Carbon Nanotubes (MWCNTs) with a diameter of 20-30 nm were used as a conductive phase to add electric conductivity to yttria stabilized tetragonal zirconia (3Y-TZP). Almost fully dense 3Y-TZP/MWCNTs nanocomposite was obtained by pressureless sintering under inert atmosphere and Hot Isostatic Pressing (HIP) treatment. The conductivity of the nanocomposites increased with increasing content of MWCNTs. Moreover, the fracture toughness increment of the composite was confirmed at 0.5 wt% addition. Scanning electron microscopy and transmission electron microscopy observation of the microstructures showed that MWCNTs were fairly homogeneously dispersed in the 3Y-TZP matrix.

Original languageEnglish
Pages (from-to)661-664
Number of pages4
JournalKey Engineering Materials
Volume317-318
DOIs
Publication statusPublished - 2006

Keywords

  • Carbon nanotubes
  • Electrical property
  • Nanocomposite
  • Tetragonal zirconia
  • Toughning

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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