Pour être utile à la compréhension des propriétés des mousses solides, la caractérisation de la microstructure de ces mousses doit s'effectuer à différentes échelles. La microstructure du matériau constituant la phase solide doit être connue. Pour ceci, le MEB est le plus souvent utilisé. L'aspect le plus important (et le plus problématique) est la caractérisation de l'architecture poreuse de ces matériaux. Les méthodes de caractérisation présentées dans cet article concernent ces deux types de caractérisations et les spécificités expérimentales liées à la nature poreuse des échantillons. La tomographie aux rayons X est décrite plus en détail, car c'est la méthode la plus utilisée. L'article montre aussi comment les images 3D obtenues, y compris en cours de déformation, sont traitées pour obtenir les paramètres décrivant la morphologie poreuse des mousses solides.
For being a useful contribution to the understanding of the properties of solid foams, the characterization of the structure of solid foams has to be performed at different scales. The microstructure of the solid part of the foams has to be analyzed. For this, standard SEM observations are often used. The most important aspect (and the most problematic) remains the characterization of the porous architecture of these materials. The methods introduced in this paper concern both scales and the article discusses the specificity of the experiments in the case of porous materials. X-ray tomography is described in more details because it becomes widely used for this purpose. The paper also shows how the obtained 3D images (sometimes obtained during deformation) can be processed to yield important morphological parameters describing the foams.
Mot clés : Tomographie aux rayons X, Matériaux cellulaires, Analyse d'images, MEB, 3D
Éric Maire 1 ; Jérôme Adrien 1 ; Clémence Petit 1
@article{CRPHYS_2014__15_8-9_674_0, author = {\'Eric Maire and J\'er\^ome Adrien and Cl\'emence Petit}, title = {Structural characterization of solid foams}, journal = {Comptes Rendus. Physique}, pages = {674--682}, publisher = {Elsevier}, volume = {15}, number = {8-9}, year = {2014}, doi = {10.1016/j.crhy.2014.09.001}, language = {en}, }
Éric Maire; Jérôme Adrien; Clémence Petit. Structural characterization of solid foams. Comptes Rendus. Physique, Volume 15 (2014) no. 8-9, pp. 674-682. doi : 10.1016/j.crhy.2014.09.001. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2014.09.001/
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