FRACTAL GEOMETRY CHANGE INDUCED BY COMPRESSION DENSIFICATION

Citation
I. Beurroies et al., FRACTAL GEOMETRY CHANGE INDUCED BY COMPRESSION DENSIFICATION, Journal of non-crystalline solids, 241(1), 1998, pp. 38-44
Citations number
27
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Material Science, Ceramics
ISSN journal
0022-3093
Volume
241
Issue
1
Year of publication
1998
Pages
38 - 44
Database
ISI
SICI code
0022-3093(1998)241:1<38:FGCIBC>2.0.ZU;2-3
Abstract
Texture change induced by an isostatic compression of low density aero gels exhibiting fractal geometry has been investigated. Fractal featur es are analyzed from small angle X-ray scattering experiments. It was found that at the onset of densification a decrease in the correlation length occurs while the fractal dimension increases a little. Isostat ic compression leads to cluster interpenetration. This provoked solid arm entanglement modifies the fractal range of cluster. For higher pre ssures correlation length does not change indicating that the cluster size is constant. Further densification has been related to the collap se of pores located between clusters. (C) 1998 Elsevier Science B.V. A ll rights reserved.