C. I. Nwoye

Department of Metallurgical and Materials Engineering, Nnamdi Azikiwe University, Awka, Nigeria

P. C. Agu

Department of Metallurgical and Materials Engineering, Federal University of Technology, Owerri, Nigeria

B. C. Chukwudi

Department of Mechanical Engineering, Imo State University, Owerri, Nigeria

S. O. Nwakpa

Department of Metallurgical and Materials Engineering, Nnamdi Azikiwe University, Awka, Nigeria

I. A. Ijomah

Department of Metallurgical and Materials Engineering, Nnamdi Azikiwe University, Awka, Nigeria

N. E. Idenyi

Department of Industrial Physics, Ebonyi State University, Abakiliki, Nigeria