Crystallization kinetics and thermal stability of ZrO2 monolithic aerogel improved by SiO2 layer

被引：1
|
作者：
Yu, Hui-jun [1 ]
Li, Xiao-lei [1 ]
He, Jian [1 ]
Su, Dong [1 ]
Ji, Hui-ming [1 ]
机构：
[1] Tianjin Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Adv Ceram & Machining Technol, Tianjin, Peoples R China
来源：
INTEGRATED FERROELECTRICS | 2018年 / 191卷 / 01期
基金：
中国国家自然科学基金;
关键词：
ZrO2; aerogel; SiO2; thermal stability; crystallization kinetics;
D O I：
10.1080/10584587.2018.1457385
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
ZrO2 aerogel modified by SiO2 (ZSA) was synthesized by aging ZrO2 gel in tetraethoxysilane (TEOS) solution using ZrOCl(2)8H(2)O as precursor, and 1,2-propylene oxide (PO) as gelation agent followed by ethanol supercritical fluid drying. Crystallization kinetics and thermal stability of ZSA while calcined at elevated temperature were studied comparing with pure ZrO2 aerogel. The prepared samples were characterized using TG-DSC, N-2 adsorption/desorption, SEM and TEM. The results show that thermal stability of ZSA are highly improved due to the SiO2 layer hindering the proliferation, nucleation and growth process of ZrO2.
引用
收藏
页码：145 / 150
页数：6
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