Titre :

Structure and thermal relaxation of network units and crystallization of lithium silicate based glasses doped with oxides of Al and B

Auteur(s) :

Gaddam, Anuraag [Auteur]
Fernandes, Hugo R. [Auteur]
Doumert, Bertrand [Auteur]
Montagne, Lionel [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Ferreira, José M. F. [Auteur]

Titre de la revue :

Phys. Chem. Chem. Phys.

Numéro :

19

Pagination :

26034-26046

Date de publication :

2017-09-08

Discipline(s) HAL :

Chimie/Chimie inorganique

Résumé en anglais : [en]

The current study reports on the relaxation behaviour of lithium silicate based glasses as probed by NMR spectroscopy. A total of four glass compositions were studied with the parent composition being 28Li2O–72SiO2, and ...
Lire la suite >The current study reports on the relaxation behaviour of lithium silicate based glasses as probed by NMR spectroscopy. A total of four glass compositions were studied with the parent composition being 28Li2O–72SiO2, and added dopants of Al and B. All the compositions showed significant differences in the NMR spectra of both annealed and non-annealed glasses demonstrating the structural relaxation behaviour. We extended our binary statistical mechanical model to these complex compositions to study the relaxation behaviour. By the combined use of the extended statistical mechanical model and broken ergodicity, we shed light on the mechanism of structural relaxation as understood by NMR spectroscopy. We studied the crystallization behaviour of the glasses and reported on the variations of the residual glass composition changes in the crystallization fraction.Lire moins >

Langue :

Anglais

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

ENSCL
CNRS
Centrale Lille
Univ. Artois
Université de Lille

Collections :

• Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181

Équipe(s) de recherche :

RMN et matériaux inorganiques (RM2I)

Date de dépôt :

2019-09-25T14:05:47Z