High hardness and ductile mosaic SiC/SiO2 composite by spark plasma sintering

Zhenhua He, Hirokazu Katsui, Rong Tu, Jianfeng Zhang, Takashi Goto

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


SiC powder was coated with SiO2 layer by chemical vapor deposition, and the SiC(core)/SiO2(shell) composite powder was consolidated to a SiC/SiO2 composite with a mosaic microstructure by spark plasma sintering (SPS) at 1923 K for 1.8 ks. The SiC(core)/SiO 2(shell) powder with a 80-100 nm thick SiO2 layer resulted in a SiC/SiO2 composite with a relative density of 97% and hardness and fracture toughness of 17.1 GPa and 8.4 MPa m1/2, respectively.

Original languageEnglish
Pages (from-to)681-683
Number of pages3
JournalJournal of the American Ceramic Society
Issue number3
Publication statusPublished - 2014 Mar

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry


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