1. Department of Metallurgical and Materials Engineering, Ahmadu Bello University, Zaria, Nigeria
2. Department of Chemical and Metallurgical Engineering, Tshwane University of Technology, Pretoria, South Africa
3. Department of Metallurgical and Materials Engineering, University of Nigeria, Nsukka, Nigeria
4. Department of Mechanical Engineering, Covenant University, Ota, Ogun State, Nigeria