Modeling of the multiscale dispersion of nanoparticles in a hematite coating

Enguerrand Couka 1 François Willot 1 Dominique Jeulin 1 Mona Ben Achour 2 Anthony Chesnaud 2 Alain Thorel 2
1 CMM - Centre de Morphologie Mathématique
2 MAT - Centre des Matériaux
Abstract : Images of a hematite-based epoxy coating are obtained by scanning electron microscopy (SEM). At the scale of a few micrometers, they show aggregates of hematite nano-particles organized along thin curved channels. We first segment the images and analyze them using mathematical morphology. The heterogeneous dispersion of particles is quantified using the correlation function and the granulometry of the embedding (epoxy) phase. Second, a two-scales, 3D random microstructure model with exclusion zones is proposed to simulate the spatial distribution of particles. This simple model is parametrized by four geometrical parameters related to the exclusion zones solely. The microstructure is numerically optimized, in the space of morphological parameters, on the granulometry of the embedding epoxy phase and on the microstructure correlation function, by standard gradient-descent methods. Excellent agreement is found between the SEM images and our optimized model. Finally, the size of the representative volume element associated to the optimized microstructure model is compared with that of the SEM images.
keyword : Microstructure optimization Random media Nanomaterials Granulometry Coating
Type de document :
Article dans une revue
Journal of Nanoscience and Nanotechnology, American Scientific Publishers, 2015, 15 (5), pp. 3515-3521(7). <10.1166/jnn.2015.9855>
Liste complète des métadonnées

https://hal.archives-ouvertes.fr/hal-00965908
Contributeur : Enguerrand Couka <>
Soumis le : mardi 25 mars 2014 - 17:55:07
Dernière modification le : vendredi 28 juillet 2017 - 11:17:15
Document(s) archivé(s) le : mercredi 25 juin 2014 - 13:05:30

Fichier

CoukaEtAl201403.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

Collections

ENSMP | ENSMP_CMM | PARISTECH | ENSMP_MAT | TDS-MACS | PSL

Citation

Enguerrand Couka, François Willot, Dominique Jeulin, Mona Ben Achour, Anthony Chesnaud, et al.. Modeling of the multiscale dispersion of nanoparticles in a hematite coating. Journal of Nanoscience and Nanotechnology, American Scientific Publishers, 2015, 15 (5), pp. 3515-3521(7). <10.1166/jnn.2015.9855>. <hal-00965908>

Exporter

BibTeX TEI DC DCterms EndNote

Partager

Métriques

Consultations de
la notice

648

Téléchargements du document

273

Contact

support.ccsd.cnrs.fr
hal.support@ccsd.cnrs.fr
Logo CCSD