Studies on the combined effects of Titania and Silicon carbide on the Phase Developments and Properties of Carbon-clay Based Ceramic Composite

Fatai Olufemi Aramide, O. D. Adepoju, Adeolu Adesoji Adediran, Abimbola Patricia Popoola, Blaza Stojanovic
2019 Cogent Engineering  
Effects of titania (TiO 2 ) and silicon carbide (SiC) on phase development and physico-mechanical properties of mullite-carbon were investigated. Powdered clay, kaolinite and graphite of predetermined compositions were blended with additives using ball mill for 3 h at 60 rev/min. Samples were produced by uniaxial compression and sintered between 1400°C and 1600°C for 1 h. They were characterized for various properties, phases developed and microstructural features. The addition of TiO 2 and SiC
more » ... on of TiO 2 and SiC in the sample lead to the formation of TiC in the sample at 1400°C and 1600°C. This takes place through high-temperature solid-state reaction (reaction sintering) of TiO 2 and SiC. This also contributes to the reduction in the apparent porosity of the sample with increased sintering temperature. The presence of titania in the sample does not favour the stability of anorthite beyond 1400°C. The formation of 50.6% mullite in the sample at 1500°C made it have the highest Fatai Olufemi Aramide ABOUT THE AUTHORS Fatai Olufemi Aramide is a senior faculty member of the Metallurgical and Materials Engineering, Federal University of Technology, Akure, Nigeria. His research focus on ceramic Engineering. He also has interests in metal matrix composite, light metal/alloys and laser cladding related research. Currently, he is a NRF-TWAS postdoctoral fellow at the
doi:10.1080/23311916.2019.1584938 fatcat:ugsfkdq3wjb4bjebj2cnn3wzdy