Spark plasma sintering of Si3N4/multilayer graphene composites

Eszter Bódis, Orsolya Tapasztó, Zoltán Károly, Péter Fazekas, Szilvia Klébert, Anna Mária Keszler, Katalin Balázsi, János Szépvölgyi

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Abstract

Mulitlayer graphene reinforced silicon nitride composites were prepared by spark plasma sintering to investigate the effect of the graphene addition on mechanical properties. The composites contained multilayer graphene (MLG) in various (0, 1, 3 and 5 wt%) content. Significantly higher fracture toughness of 8.0 MPa m1/2 was obtained at 1% MLG content, however, on further increasing the graphene content the toughness did not increase, but dropped to the value of the monolithic silicon nitride. The maximum hardness of 18.8 MPa was also obtained at 1% MLG, while at higher MLG contents it gradually decreased.

Original languageEnglish
Pages (from-to)484-489
Number of pages6
JournalOpen Chemistry
Volume13
Issue number1
DOIs
Publication statusPublished - Jan 1 2015

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Keywords

  • Multilayer graphene
  • Silicon nitride
  • Spark plasma sintering

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

Cite this

Bódis, E., Tapasztó, O., Károly, Z., Fazekas, P., Klébert, S., Keszler, A. M., Balázsi, K., & Szépvölgyi, J. (2015). Spark plasma sintering of Si3N4/multilayer graphene composites. Open Chemistry, 13(1), 484-489. https://doi.org/10.1515/chem-2015-0064