| Home | E-Submission | Sitemap | Login | Contact Us |  
J. Korean Ceram. Soc. > Volume 50(6); 2013 > Article
Journal of the Korean Ceramic Society 2013;50(6): 402.
doi: https://doi.org/10.4191/kcers.2013.50.6.402
솔-젤 공정으로 제조된 SiO2-C 복합 전구체를 사용하여 열탄소환원법에 의한 β-SiC 분말 합성에 금속 Si 첨가가 미치는 영향
조영철, 염미래, 윤성일, 조경선, 박상환
한국과학기술연구원 계면제어연구센터
Effects of Metallic Silicon on the Synthsis of β-SiC Powders by a Carbothermal Reduction Using SiO2-C Hybrid Precursor Fabricated by a Sol-gel Process
Yung-Chul Jo, Mi-Rae Youm, Sung-Il Yun, Gyoung-Sun Cho, Sang-Whan Park
Interfacial Engineering Reserch Center, Korea Institute of Science and Technology
The objective of this study was to develop a synthesis process for ${beta}$-SiC powders to reduce the synthesis temperature and to control the particle size and to prevent particle agglomeration of the synthesized ${beta}$-SiC powders. A phenol resin and TEOS were used as the starting materials for the carbon and Si sources, respectively. $SiO_2$-C hybrid precursors with various C/Si mole ratios were fabricated using a conventional sol-gel process. ${beta}$-SiC powders were synthesized by a carbothermal reduction process using $SiO_2$-C hybrid precursors with various C/Si mole ratios (1.6 ~ 2.5) fabricated using a sol-gel process. In this study, the effects of excess carbon and the addition of Si powders to the $SiO_2$-C hybrid precursor on the synthesis temperature and particle size of ${beta}$-SiC were examined. It was found that the addition of metallic Si powders to the $SiO_2$/C hybrid precursor with excess carbon reduced the synthesis temperature of the ${beta}$-SiC powders to as low as $1300^{circ}C$. The synthesis temperature for ${beta}$-SiC appeared to be reduced with an increase of the C/Si mole ratio in the $SiO_2$-C hybrid precursor by a direct carburization reaction between Si and excess carbon.
Key words: Silicon carbide, SiC, Sol-gel process, Carbothermal reduction, Powder synthesis
PDF Links  PDF Links
Full text via DOI  Full text via DOI
Download Citation  Download Citation
CrossRef TDM  CrossRef TDM
Related article
Editorial Office
Meorijae Bldg., Suite # 403, 76, Bangbae-ro, Seocho-gu, Seoul 06704, Korea
TEL: +82-2-584-0185   FAX: +82-2-586-4582   E-mail: ceramic@kcers.or.kr
About |  Browse Articles |  Current Issue |  For Authors and Reviewers
Copyright © The Korean Ceramic Society. All rights reserved.                      Developed in M2PI