Comparison of Grain Growth in Zinc Oxide in Conventional and Microwave Environments
I. K. Lloyd, C. Mims, D. Hugue, G. Xu, E. Pert, O. C. Wilson, Jr., Y. Carmel, and T. Olorunyolemi
Institute for Plasma Research
University of Maryland, College Park, Maryland 20742
101st Annual Meeting & Exposition, The American Ceramic Society
Indianapolis, IN, April 25-28, 1999
ABSTRACT. Many studies have reported that microwave energy affects the kinetics of mass transport controlled processes like sintering and grain growth. However, the interactions between diffusional behaviors and microwave energy are not yet understood. In this study, we compared grain growth in dense ZnO samples annealed in both microwave and conventional furnaces. The effects of microwave energy on grain growth behavior including rate, activation energy and type (normal and onset of abnormal grain growth) are discussed.
Work supported by AFOSR, Ceramic Materials Program.