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Microstructure of ceramic foams

Peng, HX; Fan, Z; Evans, JRG; Busfield, JJC; (2000) Microstructure of ceramic foams. Journal of the European Ceramic Society , 20 (7) pp. 807-813. 10.1016/S0955-2219(99)00229-0.

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This paper describes the preparation of ceramic foams by expansion of a ceramic suspension based on a polyurethane system. The microstructure and degree of reticulation of the foamed ceramic were examined and analysed with the help of a simple geometrical model. Like the porous ceramics prepared by the replica processing method, these foamed ceramics possess open cells in a nearly equiaxed shape but the cell size is much finer. The ratio of the window size to the cell size is a useful parameter for characterising the geometry of the foam and is related to the qualitative concept of degree of reticulation. For a face centred cubic array of cells it is related geometrically to the volume fraction of porosity and this relationship is tested using microstructural measurements for a range of ceramic foams. (C) 2000 Elsevier Science Ltd. All rights reserved.

Type: Article
Title: Microstructure of ceramic foams
DOI: 10.1016/S0955-2219(99)00229-0
URI: http://discovery.ucl.ac.uk/id/eprint/144174
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