Sol-gel synthesis and phase evolution behavior of sterically stabilized nanocrystalline zirconia

被引:72
作者
Shukla, S
Seal, S
Vanfleet, R
机构
[1] Univ Cent Florida, AMPAC, Orlando, FL 32816 USA
[2] Univ Cent Florida, MMAE, Orlando, FL 32816 USA
基金
美国国家科学基金会;
关键词
sol-gel; nanocrystalline; zirconia; hydroxypropyl cellulose; XPS; steric-stabilization;
D O I
10.1023/A:1023790231892
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Nanocrystalline as well as submicron sized, non-agglomerated, spherical ZrO2 particles have been successfully synthesized using the sol-gel technique utilizing hydroxypropyl cellulose (HPC) as a polymeric steric stabilizer. The effect of various parameters such as the ratio of molar concentration of water and alkoxide (R), the molar concentration [HPC] and the molecular weight (MWHPC) of HPC polymer as well as the calcination temperature on ZrO2 nanocrystallites size and their phase evolution behavior is systematically studied. The phase evolution behavior of nanocrystalline ZrO2 is explained and correlated with the adsorption behavior of HPC polymer on ZrO2 nanoparticles surface, which is observed to be a function of R, [HPC], MWHPC and the calcination temperature. Optimum synthesis parameters for obtaining 100% tetragonal phase in nanocrystalline ZrO2 are identified for the present sol-gel method of synthesizing nanoparticles.
引用
收藏
页码:119 / 136
页数:18
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