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Zirconium Titanate: Synthesis and Processing of Fine Powders Prepared by Chemical Route

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Abstract:

A process for synthesis of fine zirconium titanate powders by chemical route is described. Zirconium/titanium molar ratio was varied from 0.67 to 1.5 and the powders produced were analyzed. The precipitation process comprises the mixture of zirconium and titanium metal salt solutions to ammonium hydroxide solution, followed by washing of the precipitate, calcination and grinding to result in zirconium titanate. The ceramic powder is then uniaxially pressed as cylindrical samples and sintered at 1400°C for 5 hours. The microstructure of fractured and thermally etched ceramic was observed by scanning electron microscopy, and crystal phase identifications were done by X-ray diffraction. At least two different zirconium titanate phases, ZrTiO4 and Zr5Ti7O24, were identified. Ceramic hardness was measured by Vickers indentation.

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Periodical:

Materials Science Forum (Volumes 530-531)

Pages:

683-688

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.530-531.683

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Online since:

November 2006

Authors:

Valter Ussui, Dolores Ribeiro Ricci Lazar, Nelson B. Lima, Ana Helena A. Bressiani, José Octavio A. Pascoal

Keywords:

Titanium (Ti), Zirconia, Zirconium Titanate

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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