Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Impact Resistance of Al2O3-SiC Composites Against High Velocity Copper Jet

고속 구리제트에 대한 알루미나-탄화규소 복합재료의 충돌 저항물성

  • Kim, Chang-Wook (Department of Materials Science and Engineering, Myongji University) ;
  • Lee, Hyung-Bock (Department of Materials Science and Engineering, Myongji University)
  • 김창욱 (명지대학교 신소재공학과) ;
  • 이형복 (명지대학교 신소재공학과)
  • Published : 2006.10.31
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Abstract

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.

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References

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