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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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Submicrometer Silica Spheres Generated by Laser Fuming

C.M. Gomes1, R. Müller1, J. Günster1, T. Mühler2, R. Görke2, J.G. Heinrich2

1 BAM Federal Institute of Materials Research and Testing, Unter den Eichen 87, 12205 Berlin, Germany
2 Clausthal University of Technology, Institute of Nonmetallic Materials, Zehntnerstr. 2a, 38678 Clausthal-Zellerfeld, Germany

received September 19, 2012, received in revised form January 15, 2013, accepted January 30, 2013

Vol. 4, No. 1, Pages 11-18   DOI: 10.4416/JCST2012-00033

Abstract

The production of agglomerate-free SiO2 particles exhibiting a monomodal distribution of particle sizes of around 300 nm by means of direct laser fuming of micrometric SiO2 powders has been successfully demonstrated. With a 12 kW cw CO2 laser system, a production rate of up to 1 kilogram powder per hour was achieved. Almost ideal spherical amorphous SiO2 particles in a broad particle size distribution between 10 nm and several 100 nm (d50 ≈ 300 nm) were synthesized. Several observations suggest weak agglomeration forces between the particles. A temperature reduction of 200 °C for sintering powder compacts was observed.

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Keywords

Laser, SiO2, nanopowder

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