Paper Titles
Design of Multiphase Materials
p.963
Anelasticity and Strength in Zirconia Ceramics
p.967
The Study on Degradation of Y2O3-CeO2-Partially Stabilized ZrO2 Adding Al2O3 Particles at Low Temperature
p.973
Study on Preparation of Spherical Zirconia Powder in Microemulsion System and its Surface Characteristics
p.977
Preparation of Zirconia Nanopowders in Ultrasonic Field by the Sol-Gel Method
p.981
Preparation of Refractory Nozzle by Gelcasting of Zirconia Suspensions with Coarse Particles
p.987
Plastic Forming of Zirconia from Coagulated Suspensions
p.991
Fabrication of Porous Zirconia Using Filter Paper Template
p.993
Properties of ZrO2/Glass-Ceramics Composite
p.995

Preparation of Zirconia Nanopowders in Ultrasonic Field by the Sol-Gel Method

Article Preview

Abstract:

Zirconia nanopowders were prepared in the ultrasonic field by the sol-gel method and the sonochemical effect on the structure of zirconium hydroxide and the zirconia nanopowder properties were systematically investigated in this work. Ultrasound was introduced into the different stages of the synthesis of zirconia nanopowders in sol-gel reaction system, and zirconium hydroxides and the zirconia nanopowders with different properties were obtained. The results indicated that ultrasonic cavitation could not only disaggregate the agglomerates of zirconia colloidal particles but also reduce the amount of coordinated H2O, free H2O and free hydroxyl groups of the zirconium hydroxide colloidal particles, thus effectively preventing the formation of hard agglomerates in zirconia powders. Moreover, the effects of different ultrasonic output powers and treatment cycles on the structure and properties of ZrO2 nanopowders were studied by TEM, XRD and SAXS. Zirconia nanopowders with an extremely small crystallite size (10.3 nm) and a narrow size distribution were yielded with 520 W ultrasound for 6 treatment cycles on the formation period and 600 W ultrasound for 2 treatment cycles on the washing period. It is concluded that the ultrasonic field is a potential method for nanopowder preparation.

You might also be interested in these eBooks
High-Performance Ceramics III View Preview

Info:

Periodical:

Key Engineering Materials (Volumes 280-283)

Pages:

981-986

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.280-283.981

Citation:

Cite this paper

Online since:

February 2007

Authors:

Xiao Xi Li, Ling Chen, Bing Li, Lin Li

Keywords:

Nanopowder, Sol-Gel (SG), Ultrasound (US), Zirconia

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2005 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] J.A. Wang, X. Bokhimi, O. Novaro, T. López and R. Gómez: J. Phys. Chem. B Vol. 103 (1999), p.299.

Google Scholar

[2] J.A. Wang, M.A. Valenzuela, J. Salmones, A. V zquez, A. Garc a-Ruiz and X. Bokhimi: Catalysis Today Vol. 68 (2001), p.21.

Google Scholar

[3] L. Esquivias and M. Ramirez: J. Non-cryst. Solids Vol. 220 (1997), p.45.

Google Scholar

[4] D.M. Liu, J.T. Lin and W.H. Tuan: Ceramics International Vol. 25(1999), p.551.

Google Scholar

[5] N. Enomoto and M. Katsumoto: J. Ceram. Soc. Jpn. Vol. 102 (1994), p.1105.

Google Scholar

[6] P. Duran and M. Villegas: J. Eur. Ceram. Soc. Vol. 16(1996), p.945.

Google Scholar

[7] K.A. Kusters and S.E. Pratsinis: Chem. Eng. Sci. Vol. 48(1993), p.4119.

Google Scholar

[8] D. Chaumont and A. Craievich: J. Non-crystalline Solids Vol. 147-148 (1992), p.41.

Google Scholar