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J. Korean Ceram. Soc. > Volume 30(5); 1993 > Article
Journal of the Korean Ceramic Society 1993;30(5): 404.
침전법으로 제조된 ZnO 분체의 소결특성
강상규, 김경남, 한상목
강원대학교 재료공학과
Sintering Characteristics of ZnO Powder Prepared by Precipitation Method
ABSTRACT
The characterization and sintering behavior of ZnO powders prepared by precipitation method were investigated. ZnO powders were synthesized using the aqueous solutions of ZnCl2 and NH4OH as a precipitation agent, which were crystallized in the shape of plate-like. The grain growth of ZnO(0.68${mu}{textrm}{m}$, 1.3${mu}{textrm}{m}$ and 3.4${mu}{textrm}{m}$) has been studied for temepratures from 100$0^{circ}C$ to 130$0^{circ}C$, and the rate of densification was inversely proportional to the ZnO particle size. Densification proceeded slowly by diffusion mechanisms above at 100$0^{circ}C$. In this work, the grain growth kinetic exponent(n) was 3. The temperature dependence of ZnO grain growth was plotted, and the activation energy of grain growth was 75~85Kcal/mol.
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