Youn, S.I. Cho, G.S. Youm, M.R. Lim, D.S. Park, S.W. 2024-01-20T09:02:07Z 2024-01-20T09:02:07Z 2021-09-02 2014-09 1229-7801 https://pubs.kist.re.kr/handle/201004/126394 In this study, Si-SiC composites were fabricated using a Si melt infiltration method using β-SiC/C composite powders synthesized by the carbothermal reduction of SiO2-C precursors made from a TEOS and a phenol resin. The purity of the synthesized SiC-C composite powders was higher than 99.9993 wt% and the average particle size varied from 4 to 6 μm with increasing carbon contents of the SiO2-C precursors. It was found that the Si-SiC composites fabricated in this study consist of β-SiC and residual Si, without any trace of α-SiC. The 3-point bending strengths of the fabricated Si-SiC composites were measured and found to be higher than 550 MPa, although the density of the fabricated Si-SiC composite was less than 2.9 g/cm3. The bending strengths and the densities of the fabricated Si-SiC composites were found to decrease with increasing C/Si mole ratios in the SiC-C composite powders. The specific resistivities of the Si-SiC composites fabricated using the SiC-C composite powders were less than 0.018 Ωcm. With increasing C content in the SiC-C composite powders used for the fabrication of Si-SiC composites, the specific resistivity of the Si- SiC composites was found to slightly increase from 0.0157 to 0.018 Ωcm. ？ 2014, The Korean Ceramic Society. All rights reserved. Korean Korean Ceramic Society Silicon carbide Composite powders Mechanical and electrical properties RBSC Specific resistivities Bending strength Mechanical and electrical properties of Si-SiC fabricated using SiC-C composite powders synthesized by sol-gel process Article 10.4191/kcers.2014.51.5.459 1 Journal of the Korean Ceramic Society, v.51, no.5, pp.459 - 465 Journal of the Korean Ceramic Society 51 5 459 465 scopus kci ART001918952 2-s2.0-84907517892 Article Silicon carbide Composite powders Mechanical and electrical properties RBSC Specific resistivities Bending strength Bending strength RBSC Si-SiC composite Silicon carbide Specific resistivity