GU Xingyong ¹, LI Xia ², LIU Qi ³, CHEN Yunxia ¹, LI Yueming ¹

(1.School of Materials Science and Engineering, Jingdezhen Ceramic Institute, 333001; 2.State Key Laboratory of High performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chines e Academy of Sciences, 200050) (3.Jiangxi Weiyi Hi- tech Materials Co., Ltd., Jiujiang 332000)

Abstract: In this study, tetragonal ZrO₂ (3Y) nanopowder was obtained by hydrothermal process, using the aqueous solution of the composite mineralizer K₂CO₃/KOH as a reaction agent, and was then characterized by XRD, TEM, BET, etc. Results show: with the increas e of the concentration of K₂CO₃/KOH, the specific surface area of ZrO₂ (3Y) powder decreas es, equivalent specific surface diameter for ring pellet reveals upward tendency and crystalline size becomes larger; with the increas e of K₂CO₃/KOH ratio (1, 2, 3), the specific surface area of the powder registers remarkable downward tendency due to the greater concentration of the mineralizer.

Keywords: Zr₂O₃(3Y) nanopowder, hydrothermal method, mineralizer