Silicon nitride based nanocomposites produced by two different sintering methods

O. Tapasztó, P. Kun, F. Wéber, G. Gergely, K. Balázsi, J. Pfeifer, P. Arató, A. Kidari, S. Hampshire, C. Balázsi

Research output: Article

29 Citations (Scopus)

Abstract

This research explores the use of a variety of carbon nanostructures as reinforcing agents for Si3N4 matrix composites. We have chosen highly promising families of carbon materials: multiwall, singlewall carbon nanotubes (MWCNTs, SWCNTs), graphene, carbon black nanograins and graphite micrograins for use as fillers. These materials were dispersed with a concentration of 3 wt% in silicon nitride matrices. A high efficiency attritor mill has also been used for effective dispersion of second phases in the matrix. In the present work the development of sintering processes (hot isostatic pressing (HIP) and spark plasma sintering (SPS)) has been performed to consolidate and tailor the microstructure of Carbon nanotube (CNT)-reinforced silicon nitride-based ceramic composites. The silicon nitride nanocomposite systems retained the mechanical robustness of the original systems. Elastic modulus measurements and micro-indentation investigations of the hardness and fracture toughness have been performed as well as scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffraction in order to characterize the composites produced by the two sintering methods.

Original languageEnglish
Pages (from-to)3457-3461
Number of pages5
JournalCeramics International
Volume37
Issue number8
DOIs
Publication statusPublished - dec. 2011

Fingerprint

Silicon nitride
Nanocomposites
Sintering
Carbon Nanotubes
Graphite
Carbon nanotubes
Composite materials
Carbon
Spark plasma sintering
Hot isostatic pressing
Carbon black
Soot
Indentation
Graphene
Fillers
Fracture toughness
Nanostructures
Elastic moduli
Hardness
Transmission electron microscopy

ASJC Scopus subject areas

  • Ceramics and Composites
  • Process Chemistry and Technology
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

Silicon nitride based nanocomposites produced by two different sintering methods. / Tapasztó, O.; Kun, P.; Wéber, F.; Gergely, G.; Balázsi, K.; Pfeifer, J.; Arató, P.; Kidari, A.; Hampshire, S.; Balázsi, C.

In: Ceramics International, Vol. 37, No. 8, 12.2011, p. 3457-3461.

Research output: Article

Tapasztó, O. ; Kun, P. ; Wéber, F. ; Gergely, G. ; Balázsi, K. ; Pfeifer, J. ; Arató, P. ; Kidari, A. ; Hampshire, S. ; Balázsi, C. / Silicon nitride based nanocomposites produced by two different sintering methods. In: Ceramics International. 2011 ; Vol. 37, No. 8. pp. 3457-3461.
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