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Integrated Ferroelectrics
An International Journal
Volume 191, 2018 - Issue 1: Proceedings of the Sixteenth China International Nanoscience and Technology Symposium (CINSTS17), Part IV
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Articles

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

Hui-jun YuKey Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin, ChinaCorrespondence[email protected]
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,
Xiao-lei LiKey Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin, ChinaCorrespondence[email protected]
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,
Jian HeKey Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin, ChinaView further author information
,
Dong SuKey Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin, ChinaView further author information
&
Hui-ming JiKey Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin, ChinaView further author information
Pages 145-150 | Received 28 Sep 2017, Accepted 20 Feb 2018, Published online: 09 Jan 2019
 
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ABSTRACT

ZrO2 aerogel modified by SiO2 (ZSA) was synthesized by aging ZrO2 gel in tetraethoxysilane (TEOS) solution using ZrOCl2·8H2O 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, N2 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.

Funding

This study was supported by the National Natural Science Foundation of China (Grant No. 51172157).

Additional information

Funding

National Natural Science Foundation of China, 51172157.

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