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J. Korean Ceram. Soc. > Volume 43(10); 2006 > Article
Journal of the Korean Ceramic Society 2006;43(10): 660.
doi: https://doi.org/10.4191/kcers.2006.43.10.660
고속 구리제트에 대한 알루미나-탄화규소 복합재료의 충돌 저항물성
김창욱, 이형복
명지대학교 신소재공학과
Impact Resistance of Al2O3-SiC Composites Against High Velocity Copper Jet
Chang-Wook Kim, Hyung-Bock Lee
Department of Materials Science and Engineering, Myongji University
The mechanical properties of $Al_2O_3$-SiC composites manufactured with adding various amount and size of SiC particles have been measured and analyzed. Generally, the elastic modulus of the composites shows about 50% less than that of PL-8 (45 wt% $Al_2O_3$-51 wt% $SiO_2$-4 wt% other oxides), but the flexural strength is similar with each other. The impact resistance property of $Al_2O_3$-SiC composite against high velocity copper jet was lower than that of PL-8 when SiC particles of approximately 3 $mu$m diameter was added to. It is caused probably due to the micro-pores made by oxidation of SiC particles. However, in the case of the less-weighted $Al_2O_3$-SiC composite adding to 10 wt% SiC with average diameter of 10 $mu$m and sintering at 1200$^{circ}C$, the impact resistance property was improved up to 37 percent compared with that of PL-8.
Key words: $Al_2O_3$-SiC, Impact resistance, Particle size, Sintering temperature, SiC content
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