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 |
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ABSTRACT |
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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