Spark plasma sintering of ceramic matrix composite based on alumina, reinforced by carbon nanotubes

A. A. Leonov, A. O. Khasanov, V. A. Danchenko, O. L. Khasanov

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Alumina composites reinforced with 3 vol.% multi-walled carbon nanotubes (MWCNTs) were prepared by spark plasma sintering (SPS). The influence of sintering temperature (1400-1600 °C) on the composites microstructure and mechanical properties was investigated. Microstructure observations of the composite shows that some CNTs site along alumina grains boundary, while others embed into the alumina grains and shows that CNTs bonded strongly with the alumina matrix contributing to fracture toughness and microhardness increase. MWCNTs reinforcing mechanisms including CNT pull-out and crack deflection were directly observed by scanning electron microscope (SEM). For Al2O3/CNT composite sintered at 1600 °C, fracture toughness and microhardness are 4.93 MPa•m1/2 and 23.26 GPa respectively.

Original languageEnglish
Article number012034
JournalIOP Conference Series: Materials Science and Engineering
Volume286
Issue number1
DOIs
Publication statusPublished - 2 Jan 2018

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Ceramic matrix composites
Carbon Nanotubes
Spark plasma sintering
Aluminum Oxide
Carbon nanotubes
Alumina
Composite materials
Microhardness
Fracture toughness
Microstructure
Grain boundaries
Electron microscopes
Sintering
Cracks
Scanning
Mechanical properties
Temperature

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)

Cite this

Spark plasma sintering of ceramic matrix composite based on alumina, reinforced by carbon nanotubes. / Leonov, A. A.; Khasanov, A. O.; Danchenko, V. A.; Khasanov, O. L.

In: IOP Conference Series: Materials Science and Engineering, Vol. 286, No. 1, 012034, 02.01.2018.

Research output: Contribution to journalArticle

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