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Materials and Manufacturing Processes Volume 19, 2004 - Issue 4
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Original Articles

Structural Evolution During Reaction to Form Aluminum Titanate from Sol-Gel Precursors

Lia A. Stanciu Chemical Engineering and Materials Science Department, University of California, Davis, California, USACorrespondence[email protected]
,
Joanna R. Groza Chemical Engineering and Materials Science Department, University of California, Davis, California, USA
,
A. Jitianu Institute of Physical Chemistry of the Romanian Academy, 202 Spl. Independentei, 77208 Sector 6, Bucharest, Romania
&
Maria Zaharescu Institute of Physical Chemistry of the Romanian Academy, 202 Spl. Independentei, 77208 Sector 6, Bucharest, Romania
Pages 641-650 | Received 03 Jun 2003, Accepted 29 Jul 2003, Published online: 17 Aug 2006
 
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Abstract

Aluminum titanate ceramic materials have been obtained by field-activated sintering of amorphous sol-gel powder precursors. Aluminum titanate formation started at 1000°C. The structural evolution with temperature from the amorphous sol-gel state to the final fully densified ceramic product has been monitored by X-ray diffraction (XRD), Fourier-transform infrared (FTIR), and electron microscopy. The full crystallization of aluminum titanate occurred at 1200°C. The grain size of the specimen densified at 1300°C was between 150 and 500 nm.

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