Graphene/titanium carbide composites prepared by sol-gel infiltration and spark plasma sintering

Xiaojing Wang, Lu Mingyuan, Ling Qiu, Han Huang, Dan Li, Huanting Wang, Yi-Bing Cheng

Research output: Contribution to journalArticleResearchpeer-review

24 Citations (Scopus)

Abstract

Graphene/titanium carbide composites were synthesized by means of sol-gel infiltration and spark plasma sintering (SPS). The graphene used in this research was casted into a sponge-like shape, composed of a three-dimensional (3D) network of graphene sheets. The sol-gel infiltration synthesis method allowed the formation of nanostructured ceramics inside the porous structure of graphene networks, thus forming composites. The compositions and microstructures of the Ti-O-C composites changed with the amount of the polymerizable carbon source (i.e. furfuryl alcohol (FA)) in the solution. A high carbon ratio was required to maintain the structure of the graphene network, as the graphene sheets could become a carbon source to react with TiO2 resulting in a lamellar-shaped grain morphology. Samples after SPS showed some toughening effects, such as de-bonding, bridging and formation of microcracks. Vickers hardness, electrical resistivity and thermal conductivity were examined for the composites.

Original languageEnglish
Pages (from-to)122-131
Number of pages10
JournalCeramics International
Volume42
Issue number1
DOIs
Publication statusPublished - 1 Jan 2016

Keywords

  • B. Nanocomposites
  • Ceramic matrix composites
  • Sol-gel
  • Spark plasma sintering
  • Titanium carbide

Cite this