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J. Korean Ceram. Soc. > Volume 50(6); 2013 > Article
Journal of the Korean Ceramic Society 2013;50(6): 372.
doi: https://doi.org/10.4191/kcers.2013.50.6.372
Al2TiO5가 첨가된 쾌삭(快削) SiC 세라믹스
김일수, 박정현, 이원재, 이강호1
동의대학교 융합부품공학과
1(주) 단단
Machinable SiC Ceramics with Addition of Al2TiO5
Il Soo Kim, Jeong Hyun Park, Won Jae Lee, Kang Ho Lee1
Department of Materials and Components Engineering, Dongeui University
1Dandan Materials
Machinable SiC ceramics are prepared with the addition of $Al_2TiO_5$. Ready-to-press SiC and $Al_2TiO_5$ powders are mixed and pressureless sintered at $1750^{circ}C$ and $1850^{circ}C$ for 1 h. The weight ratios of the SiC and $Al_2TiO_5$ powders are 100 : 0, 100 : 10, and 100 : 20. After sintering, only SiC peaks are detected in the X-ray diffraction analyses. The density, strength, and grain size of the SiC increase with increases in the $Al_2TiO_5$ content and sintering temperature. The $Al_2TiO_5$-doped specimens are easy to micro-hole machine. Based on the density and strength data, the ceramics sintered at $1850^{circ}C$ can be used as machinable ceramics.
Key words: SiC, $Al_2TiO_5$, Machinable ceramics, Pressureless sintering
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