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Journal of Ceramic Science and Technology

The Journal of Ceramic Science and Technology publishes original scientific articles on all topics of ceramic science and technology from all ceramic branches. The focus is on the scientific exploration of  the relationships between processing, microstructure and properties of sintered ceramic materials as well as on new processing routes for innovative ceramic materials. The papers may have either theoretical or experimental background. A high quality of publications will be guaranteed by a thorough double blind peer review process.

The Journal is published by Göller Verlag GmbH on behalf of the Deutsche Keramische Gesellschaft (DKG). Edited by Yu-Ping Zeng, Shanghai Institute of Ceramics, Chinese Academy of Sciences, China.

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Laser Synthesis of Al2TiO5 Ceramics from Al2O3-TiO2 Powder Mixtures

M. Vlasova1, B. Sosa Coeto1, M. Kakazey1, P. A. Marquez Aguilar1, 1, A. Escobar Martinez1, V. Stetsenko2, A. Bykov2

1 Center of Investigation in Engineering and Applied Sciences of the Autonomous University of the State of Morelos (CIICAp-UAEMor), Av. Universidad, 1001, Cuernavaca, Mexico.
2 Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, 3, Krzhyzhanovsky St., Kiev, 252680, Ukraine

received January 25, 2012, received in revised form February 26, 2012, accepted March 21, 2012

Vol. 3, No. 2, Pages 61-68   DOI: 10.4416/JCST2012-00005

Abstract

The phase formation process in the zone of laser irradiation of Al2O3-TiO2 compacts with different contents of components has been investigated with XRD, electron microscopy, and atomic force microscopy methods. The distinctive feature of laser synthesis is the simultaneous formation of α- and β-Al2TiO5, which is caused by the non-uniform heating of the material in the irradiation zone. The motion of the eutectic melt under the action of hydrodynamic forces is the motive force for texturing of precipitating crystalline phases during fast cooling. The degree of texturing of Al2O3 and Al2TiO5 crystallites depends on the amount of the formed eutectic melt.

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Keywords

Al2O3, TiO2, laser treatment, Al2TiO5

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