Preparation and sintering of silica-coated silicon carbide composite powder

Hirokazu Katsui, Zhenhua He, Takashi Goto

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


SiO2-coated SiC powders were prepared via rotary chemical vapor deposition and consolidated by spark plasma sintering. Thin amorphous SiO2 layers were deposited uniformly on SiC powders at 948 K at deposition time from 2.7 to 7.2 ks. The resultant SiO2-coated SiC powders were sintered, and the effects of the sintering temperature on the phase, morphology, relative density, and mechanical property were investigated. The SiO2-coated SiC sintered body fabricated at 1923 K was nearly fully densified, with a mosaic structure consisting of small SiC particles and a thin SiO2 matrix, and exhibited high hardness (HV = 17.1 GPa) and toughness (KIC = 8.4 MPa m1/2).

Original languageEnglish
Pages (from-to)111-116
Number of pages6
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Issue number3
Publication statusPublished - 2016 Mar


  • Chemical vapor deposition
  • Hardness
  • Silicon carbide
  • Spark plasma sintering
  • Toughness

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry


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