Mohammadreza Shokouhimehr Seyed Ali Delbari Abbas Sabahi Namini Ehsan Taghizadeh Sunghoon Jung Jin Hyuk Cho Quyet Van Le Joo Hwan Cha Soo Young Kim Ho Won Jang 2024-01-12T02:33:15Z 2024-01-12T02:33:15Z 2023-04-04 2023-01 2045-2322 https://pubs.kist.re.kr/handle/201004/75846 A carbon-fiber (Cf) doped TiB2？SiC composite was prepared and investigated to determine its densification behavior, micro/nanostructural properties, and mechanical characteristics. TiB2？25 vol% SiC？2 wt% Cf was prepared at 40 MPa and 1800 °C for 7 min using the pulsed electric-current sintering technique, and a relative density of 98.5% was realized. The as-sintered composite was characterized using advanced techniques, e.g., X-ray diffractometry, energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, field-emission scanning electron microscopy, high-resolution transmission electron microscopy, field-emission electron probe micro-analysis, and nanoindentation. The Cf additive could remove the surface oxide layers from the TiB2 and SiC domains, thus transforming them into TiB2 and SiC. According to micro/nanostructural studies, Cf could not retain its initial structure and was eventually converted into graphite nanosheets. In addition, the prepared composite was examined using the nanoindentation technique, and the following results were obtained for the calculated hardness, elastic modulus, and stiffness values: TiB2？>？SiC？>？TiB2/SiC interface. English Nature Publishing Group Nanostructure and nanoindentation study of pulse electric-current sintered TiB2-SiC-Cf composite Article 10.1038/s41598-022-27186-8 1 Scientific Reports, v.13, no.1 Scientific Reports 13 1 Y scie scopus 000984279900038 Multidisciplinary Sciences Science & Technology - Other Topics Article MICROSTRUCTURAL EVOLUTION BEHAVIOR DENSIFICATION CERAMICS TIN GRAPHENE NANO-PLATELETS MECHANICAL-PROPERTIES