Cho, KS Kim, YW Choi, HJ Lee, JG 2024-01-21T19:08:07Z 2024-01-21T19:08:07Z 2022-01-11 1996-12-01 0022-2461 https://pubs.kist.re.kr/handle/201004/144209 Particle-reinforced SiC composites with the addition of TiC or TiB2 were fabricated at 1850 degrees C by hot-pressing. Densification was accomplished by utilizing a liquid phase formed with added Al2O3, Y2O3, and surface SiO2 on SiC. Their mechanical and electrical properties were measured as a function of TiC or TiB2 content. Adding TiC or TiB2 to the SIC matrix increased the toughness, and decreased the strength and electrical resistivity. The fracture toughnesses of SiC-50 wt % TiC and SiC-50 wt % TiB2 composites were approximately 60% and 50%, respectively, higher than that of monolithic SiC ceramics. Microstructural analysis showed that the toughening was due to crack deflection, with some possible contribution from microcracking in the vicinity of TiC or TiB2 particles. English CHAPMAN HALL LTD MECHANICAL-PROPERTIES SILICON-CARBIDE FRACTURE-TOUGHNESS DISCHARGE SiC-TiC and SiC-TiB2 composites densified by liquid-phase sintering Article 10.1007/BF00354442 1 JOURNAL OF MATERIALS SCIENCE, v.31, no.23, pp.6223 - 6228 JOURNAL OF MATERIALS SCIENCE 31 23 6223 6228 scie scopus A1996VZ40700017 2-s2.0-0030395224 Materials Science, Multidisciplinary Materials Science Article MECHANICAL-PROPERTIES SILICON-CARBIDE FRACTURE-TOUGHNESS DISCHARGE