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Microstructural, mechanical and thermal characterization of alumina gel-cast foams manufactured with the use of agarose as gelling agent

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Abstract

Alumina gel-cast foams manufactured by using agarose as gelling agent were examined in terms of microstructural, mechanical and thermal properties. The microstructural SEM measurements of alumina foams were compared with X-ray micro tomography investigations also on the pore network. Young’s modulus of alumina foams was determined by impulse excitation and ultrasonic sound velocity measurements. These two independent techniques showed similar results. Gibson and Ashby’s model of completely open-cell and closed-cell foams was compared with experimental data from compression tests. The thermal conductivity measurements using laser-flash analysis were correlated with the pore network in the alumina foam structure.

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Acknowledgments

Financial support from German Research Council (DFG) Reinhart Koselleck project (GR 961/32-1) is gratefully acknowledged. M. Potoczek period of collaborative research at Erlangen-Nuremberg University was co-financed by European Social Fund in Poland within the Operational Programme Human Capital, Priority IV Higher Education and Science in the project “Enlargement and enriching the educational offer and improving the quality of education at the Faculty of Chemistry in Rzeszów University of Technology”, Agreement No UDA-POKL.04.01.01-00-101/09-01.

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Authors and Affiliations

  1. Department of Material Science, University Erlangen-Nürnberg, Martensstr. 5, 91058, Erlangen, Germany

    Tobias Fey, Bodo Zierath & Peter Greil

  2. Faculty of Chemistry, Rzeszow University of Technology, Powstancow Warszawy Ave. 12, 35-959, Rzeszow, Poland

    Marek Potoczek

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  1. Tobias Fey
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  2. Bodo Zierath
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  4. Marek Potoczek
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Correspondence to Tobias Fey.

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Fey, T., Zierath, B., Greil, P. et al. Microstructural, mechanical and thermal characterization of alumina gel-cast foams manufactured with the use of agarose as gelling agent. J Porous Mater 22, 1305–1312 (2015). https://doi.org/10.1007/s10934-015-0009-7

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