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J. Korean Ceram. Soc. > Volume 44(7); 2007 > Article
Journal of the Korean Ceramic Society 2007;44(7): 349.
doi: https://doi.org/10.4191/kcers.2007.44.7.349
Effect of the Processing Parameters on the Densification and Strength of 2D SiC Fiber-SiC Matrix Composites Fabricated by Slurry Infiltration and Stacking Process
Kwang-Young Lim, Doo-Hee Jang, Young-Wook Kim, Ji-Yeon Park1, Dong-Soo Park2
Department of Materials Science and Engineering, University of Seoul
1Division of Nuclear Materials Technology Development, Korea Atomic Energy Research Institute
2Department of Future Technology, Korea Institute of Machinery and Materials
2D SiC fiber-SiC (SiC/SiC) composites were fabricated via slurry infiltration and a stacking process. The effects of the additive composition and content in SiC slurries and the effect of the sintering time on the sintered density and strength of SiC/SiC composites were investigated. A slurry containing $Al_2O_3-Y_2O_3-MgO$ (AYM) additives led to a higher strength compared to a slurry containing $Al_2O_3-Y_2O_3-CaO$ (AYC) additives. The sintered density increased as the sintering time increased and showed a maximum (>98%) at 4 h. In contrast, the flexural strength increased as the sintering time increased and showed a maximum (615 MPa) at 6 h. The relative density and flexural strength increased as the additive content increased.
Key words: Fiber composites, Silicon carbide, Densification, Strength, Processing parameter
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