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Research Article | Open Access

Preparation of SiC powders by carbothermal reduction with bamboo charcoal as renewable carbon source

Xingzhong GUO, Lin ZHU, Wenyan LI, Hui YANG*( )
Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
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Abstract

Bamboo charcoal was expected to be a renewable carbon source for carbide materials in carbothermal reduction because of its superior characteristics. SiC powders with characteristic shapes were fabricated by carbothermal reduction with industrial silica sol and bamboo charcoal particles as silicon and carbon sources respectively, and the effects of reacting temperature and time on shape evolutions and properties of the as-prepared SiC powders were investigated. The silica sol/bamboo charcoal system was firstly transformed into SiO2/C system by the transition of silica sol and graphitization of bamboo charcoal, and the carbothermal reduction between SiO2 and C occurred at/above 1600 ℃. The characteristic shapes of SiC particles were transformed from string-beads-like to dumbbell-like and rod-like with the increase of reacting temperature. The prepared SiC powders are expected to become new raw material for silicon carbide ceramic composites.

Keywords

carbideschemical synthesisX-ray diffraction (XRD)microstructure

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Journal of Advanced Ceramics
Volume 2 Issue 2,
June 2013
Pages 128-134
DOI: 10.1007/s40145-013-0050-4
Cite this article:
GUO X, ZHU L, LI W, et al. Preparation of SiC powders by carbothermal reduction with bamboo charcoal as renewable carbon source. Journal of Advanced Ceramics, 2013, 2(2): 128-134. https://doi.org/10.1007/s40145-013-0050-4

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Received: 23 January 2013
Revised: 24 February 2013
Accepted: 27 February 2013
Published: 04 June 2013
© The author(s) 2013

Open Access: This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.
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