A novel structure for carbon nanotube reinforced alumina composites effects of sintering additives on the mechanical properties

Go Yamamoto, Mamoru Omori, Yoichi Aizawa, Toshiyuki Hashida, Toshiyuki Takagi

Research output: Contribution to journalArticle

Abstract

We report the mechanical properties of multi-walled carbon nanotube (MWCNT)/alumina composites made with a pristine MWCNT and an acid-treated version that have nanoscale defects on their surfaces from an acid treatment. In order to evaluate the effects of sintering additives on the mechanical properties of the composites, we employed three sets of the composites having different sintering additives. Mechanical properties of the MWCNT-based alumina composites were dependent mostly on the type of sintering additives. The composites with magnesia sintering additive, having 0.9 vol.% acid-treated MWCNT, showed a higher bending strength (689.6MPa) and fracture toughness (5.90 MPa·m1/2), than those of the composites with silica sintering additive.

Original languageEnglish
Pages (from-to)416-418
Number of pages3
JournalNihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
Volume76
Issue number764
DOIs
Publication statusPublished - 2010 Apr

Keywords

  • Carbon nanotubes
  • Ceramics
  • Composite materials
  • Interface
  • Mechanical properties

ASJC Scopus subject areas

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

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