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J. Korean Ceram. Soc. > Volume 45(7); 2008 > Article
Journal of the Korean Ceramic Society 2008;45(7): 430.
doi: https://doi.org/10.4191/kcers.2008.45.7.430
탄소 원료가 다공질 Self-Bonded SiC (SBSC) 세라믹스의 기공율과 곡강도에 미치는 영향
임광영, 김영욱, 우상국1, 한인섭1
서울시립대학교 신소재공학과
1한국에너지기술연구원 에너지재료연구센터
Effect of Carbon Source on Porosity and Flexural Strength of Porous Self-Bonded Silicon Carbide Ceramics
Kwang-Young Lim, Young-Wook Kim, Sang-Kuk Woo1, In-Sub Han1
Department of Materials Science and Engineering, the University of Seoul
1Energy Materials Research Center, Korea Institute of Energy Research
Porous self-bonded silicon carbide (SBSC) ceramics were fabricated at temperatures ranging from 1700 to $1850^{circ}C$ using SiC, silicon (Si), and three different carbon (C) sources, including carbon black, phenol resin, and xylene. The effects of the Si:C ratio and carbon source on porosity and strength were investigated as a function of sintering temperature. Porous SBSC ceramics fabricated from phenol resin showed higher porosity than the others. In contrast, porous SBSC ceramics fabricated from carbon black showed better strength than the others. Regardless of the carbon source, the porosity increased with decreasing the Si:C ratio whereas the strength increased with increasing the Si:C ratio.
Key words: Porous ceramics, Silicon carbide, Self-bonded SiC, Porosity, Strength
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