Mojisola, Tajudeen (PhD)
Tajudeen obtained a BEng and MEng degrees in Metallurgical and Materials Engineering from the Federal University of Technology, Akure, in 2009 and 2015, respectively. He enrolled for a PhD programme in Engineering Metallurgy at the University of Johannesburg in 2017. The National Research Foundation (NRF) under the Priority Research Grant funded his doctoral research. He received an NRF travel grant for an eight-month research visit to the Fraunhofer Institute of Ceramic Technologies and Systems, Dresden, Germany, where the majority of the PhD studies was carried out. His research study has produced two publications in peer- reviewed international journals and a provisional patent that is awaiting final registration. Tajudeen’s doctoral research focused on the development of high -purity titanium- based hard ceramic composites from Richards Bay’s low -grade titanium ore. A simple and low cost carbonitrothermic reduction technique was developed for the synthesis of high purity cermets directly from low-grade ore. High purity cermets were successfully synthesised at 1400 °C and further consolidated into compacts using innovative hybrid spark plasma sintering technology. The synthesised and consolidated high-grade titanium carbide, titanium nitride and titanium carbonitride possess superior hot hardness and toughness, excellent thermal stability, high electrical and thermal conductivities, and excellent corrosion resistance properties that are competitive with those produced from high-grade titanium ores. These cermets are recommended for the production of high temperature cutting tools for use in high temperature machining operations.
Supervisor: Prof PA Olubambi Co-supervisor: Dr WR Matizamhuka
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