Yun, S.-H. Yang, J.-O. Cho, Y.-C. Park, S.-W. 2024-01-20T16:05:09Z 2024-01-20T16:05:09Z 2021-09-02 2011-10 1229-7801 https://pubs.kist.re.kr/handle/201004/129967 The composite added with surface-coated chopped carbon fiber showed the microstructure of a 3 dimensional discretional arrangements. The fiber reinforced reaction bonded silicon carbide composite, containing the 50 vol% carbon fiber, showed the porosity of < 1 vol%, 3-point bending strength value of 250MPa and fracture toughness of 4.5MPa m 1/2. As the content of carbon fiber was increased from 0 vol% to 50 vol% in the composite, fracture strength was decreased due to the increase of carbon fiber, which has a less strength than SiC and molten Si. On the other hand, the fracture toughness was increased with increasing the amount of carbon fiber. According to the polished microstructure, carbon fiber was shown to have a random 3 dimensional arrangement. Moreover, the fiber pull-out phenomenon was observed with the fractured surface, which can explain the increased fracture toughness of the composite containing high content of carbon fiber. Korean Korean Ceramic Society Bending strength Carbon fibers Fibers Fracture toughness Microstructure Reinforcement Silicon carbide Carbon fiber reinforced Chopped carbon fiber Fiber reinforced Fractured surfaces Molten silicon RBSC Reaction-bonded silicon carbides SiSiC Carbon silicon carbide composites Variation of mechanical properties by carbon fiber volume percent of carbon fiber reinforced reaction bonded SiC Article 10.4191/kcers.2011.48.5.373 1 Journal of the Korean Ceramic Society, v.48, no.5, pp.373 - 378 Journal of the Korean Ceramic Society 48 5 373 378 scopus kci ART001590586 2-s2.0-80055089290 Article Bending strength Carbon fibers Fibers Fracture toughness Microstructure Reinforcement Silicon carbide Carbon fiber reinforced Chopped carbon fiber Fiber reinforced Fractured surfaces Molten silicon RBSC Reaction-bonded silicon carbides SiSiC Carbon silicon carbide composites Carbon fiber Fiber reinforced Molten silicon RBSC SiSiC