溶胶-凝胶-超临界流体干燥法制备纳米3Y-ZrO_2  

PREPARATION OF NANO 3Y-ZrO_2 BY SUPERCRITICA FLUID DRYING METHODS

作　　者：顾华志[1] 唐勋海[1] 汪厚植[1] 宋申华[1] 

机构地区：[1]武汉科技大学高温陶瓷与耐火材料湖北省重点实验室,武汉430081

出　　处：《中国陶瓷》2004年第3期14-16,34,共4页China Ceramics

基　　金：湖北省自然科学基金资助项目(2003ABA079)

摘　　要：本文以无机盐 ZrOCl ·8H O 和 Y(NO ) 为前驱体,乙酸络合,通过溶胶-凝胶法和超临界流体干燥制 2 2 3 3备 YSZ 纳米晶,并用XR D 、T E M 等手段对其进行表征。结果表明,纳米粒子晶粒细小、均匀,近似球形,颗粒粒径在1 0 n m 左右,没有明显团聚现象。Yttia(3mol%)-stabilized nano-sized zirconia (3Y-ZrO ) powders were prepared by means of 2 sol-sel in conjunction with supercritical fluid drying (SCFD). The synthesis was performed at 250℃ with ZrOCl ·8H O and Y(NO) being precursors and with CH COOH being a complexing agent. After supercritical 2 2 3 3 fluid drying with alcohol at 250℃ and 7MPa, the produced nano 3Y-ZrO has an average size of 10nm 2 without apparent agglomeration and almost consists of tetragonal crystals.

关 键 词：溶胶-凝胶 超临界流体干燥 纳米材料 ZRO2 制备 

分 类 号：TQ174.1[化学工程—陶瓷工业]