1. Department of Metallurgical and Materials Engineering, Federal University of Technology, Akure, Nigeria
2. Centre for Nanoengineering and Tribocorrosion, School of Mining, Metallurgy and Chemical Engineering, Faculty of Engineering & the Built Environment, University of Johannesburg, South Africa
3. Department of Mechanical Engineering, Federal University of Technology, Akure, Nigeria
4. Department of Physics, Federal University of Technology, Akure, Nigeria