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http://dx.doi.org/10.4191/KCERS.2006.43.10.660

Impact Resistance of Al2O3-SiC Composites Against High Velocity Copper Jet  

Kim, Chang-Wook (Department of Materials Science and Engineering, Myongji University)
Lee, Hyung-Bock (Department of Materials Science and Engineering, Myongji University)
Publication Information
Journal of the Korean Ceramic Society / v.43, no.10, 2006 , pp. 660-665 More about this Journal
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.
Keywords
$Al_2O_3$-SiC; Impact resistance; Particle size; Sintering temperature; SiC content;
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Times Cited By KSCI : 1  (Citation Analysis)
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