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- Title
Preparation and Sintering of Silica-Coated Silicon Carbide Composite Powder.
- Authors
Hirokazu KATSUI; Zhenhua HE; Takashi GOTO
- Abstract
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).
- Subjects
SINTERING; SILICON carbide; POWDERS; HARDNESS; MOSAIC structure; CRYSTALLIZATION
- Publication
Journal of the Japan Society of Powder & Powder Metallurgy / Funtai Oyobi Fummatsu Yakin, 2016, Vol 63, Issue 3, p111
- ISSN
0532-8799
- Publication type
Article
- DOI
10.2497/jjspm.63.111