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Comptes Rendus Physique
Volume 19, n° 7
pages 561-574 (novembre 2018)
Doi : 10.1016/j.crhy.2018.06.001
Structural studies / Études structurales

Application of the pair distribution function analysis for the study of cultural heritage materials
Application de l'analyse par la fonction de distribution de paires à l'étude des matériaux du patrimoine culturel
 

Pierre Bordet
 Université Grenoble Alpes, CNRS, Institut Néel, 38042 Grenoble, France 

Abstract

The study of cultural heritage objects represents a challenge for materials sciences, because of their intrinsic complexity as well as because of their rare and precious nature, which requires the use of non-destructive methods. One of the major difficulties encountered by the methods of structural analysis of these materials is the presence of mixtures of crystallized and amorphous phases, the conventional methods of crystallography being poorly adapted to the latter. Here we present the Pair Distribution Function analysis method, which based on diffraction data, allows access to the identification, microstructural characterization and quantification of phases constituting a complex mixture, independently of their amorphous or crystalline character. Two recent examples will be presented to illustrate the use of this method in studies of cultural heritage materials.

The full text of this article is available in PDF format.
Résumé

L'étude des objets du patrimoine culturel représente un défi pour la science des matériaux, de par leur complexité intrinsèque ainsi que par leur caractère rare et précieux, qui impose d'utiliser des méthodes non destructives. Une des difficultés majeures rencontrées par les méthodes d'analyse structurale de ces matériaux est la présence de mélanges de phases cristallisées et amorphes, les méthodes classiques de la cristallographie étant mal adaptées à ces dernières. Nous présentons ici la méthode d'analyse par fonction de distribution de paires, qui, sur la base de données de diffraction, permet d'accéder à l'identification, la caractérisation microstructurale et la quantification des phases constituant un mélange complexe, indépendamment de leur caractère amorphe ou cristallisé. Deux exemples récents seront exposés pour illustrer l'utilisation de cette méthode dans le cadre d'études sur les matériaux du patrimoine culturel.

The full text of this article is available in PDF format.

Keywords : Cultural heritage materials, Pair Distribution Function, Tomography, Synchrotron

Mots-clés : Matériaux du patrimoine, Fonction de distribution de paires, Tomographie, Synchrotron




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