Microstructure of ceramic foams |
| |
| Affiliation: | 1. Department of Materials Engineering, Brunel University, Uxbridge, Middlesex UB8 3PH, UK;2. Department of Materials, Queen Mary and Westfield College, Mile End Road, London E1 4NS, UK;1. The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, 430081 Wuhan, China;2. National-provincial Joint Engineering Research Center of High Temperature Materials and Lining Technology, Wuhan University of Science and Technology, China;1. School of Environment and Materials Engineering, Yantai University, Yantai Shandong 264005, PR China;2. School of Computer and Control Engineering, Yantai University, Yantai Shandong 264005, PR China |
| |
| Abstract: | 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. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
