C. I. Nwoye
Department of Metallurgical and Materials Engineering, NnamdiAzikiwe University, Awka, Nigeria
M. O. Nwankwo
Department of Industrial Physics, Ebonyi State University, Abakiliki, Nigeria
E. M. Ameh
Department of Metallurgical and Materials Engineering, Enugu State University of Science & Technology, Enugu, Nigeria
N. E. Idenyi
Department of Industrial Physics, Ebonyi State University, Abakiliki, Nigeria
L. C. Oshionwu
Department of Industrial Physics, Ebonyi State University, Abakiliki, Nigeria