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J. Korean Ceram. Soc. > Volume 50(1); 2013 > Article
Journal of the Korean Ceramic Society 2013;50(1): 31.
doi: https://doi.org/10.4191/kcers.2013.50.1.31
C/Si 몰 비가 TEOS와 페놀수지를 출발원료 사용하여 합성된 β-SiC 분말의 특성에 미치는 영향
염미래, 박상환, 김영욱1
한국과학기술연구원 계면제어연구센터
1서울시립대학교 신소재공학과 기능성세라믹스연구실
Effect of the C/Si Molar Ratio on the Characteristics of β-SiC Powders Synthesized from TEOS and Phenol Resin
Mi-Rae Youm, Sang-Whan Park, Young-Wook Kim1
Interfacial Control Research Center, Korea Institute of Science and Technology
1Functional Ceramics Laboratory, Department of Materials Science and Engineering, The University of Seoul
${beta}$-SiC powders were synthesized by a carbothermal reduction process using $SiO_2$-C precursors fabricated by a sol-gel process using phenol resin and TEOS as starting materials for carbon and Si sources, respectively. The C/Si molar ratio was selected as an important parameter for synthesizing SiC powders using a sol-gel process, and the effects of the C/Si molar ratio (1.4-3.0) on the particle size, particle size distribution, and yield of the synthesized ${beta}$-SiC powders were investigated. It was found that (1) the particle size of the synthesized ${beta}$-SiC powders decreased with an increase in the C/Si molar ratio in the $SiO_2$-C hybrid precursors, (2) the particle size distribution widened with an increase in the C/Si molar ratio, and (3) the yield of the ${beta}$-SiC powder production increased with an increase in the C/Si molar ratio.
Key words: Silicon carbide, Powder synthesis, Tetraethylorthosilcate (TEOS), Carbothermal reduction, Sol-gel process
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