Crystallization and mechanical properties of a barium titanosilicate glass - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Materials Science Année : 2024

Crystallization and mechanical properties of a barium titanosilicate glass

Pierre Mezeix
  • Fonction : Auteur
  • PersonId : 1001804
T. To
Connectez-vous pour contacter l'auteur
Patrick Houizot
Fabrice Celarie
Tanguy Rouxel

Résumé

Glasses and glass-ceramics from the BaO-TiO2-SiO2 systems have potential applications in piezoelectric and photonic devices. However, more studies on their crystallization and mechanical properties are needed to put the materials into service. In this work, seven grades of glasses with 30BaO-xTiO2-(70-x)SiO2 (mol%) were prepared. The crystallization behavior and mechanical properties were investigated. The 30BaO-20TiO2-50SiO2 glass composition, possessing a glass transition temperature of 759 degrees C and a crystallization onset temperature of 877 degrees C, shows a prominent surface nanocrystallization. Heat treatments at 800 degrees C for different durations result in various depths for the crystalline phase layer. Depths of about 1 mu m and 200 mu m were obtained by heat treatments for 3 h and 70 h, respectively. The nucleation rate is found to be around 1016 to 1018 m-3 s-1, which is comparable to that of the fresnoite stoichiometric composition (Ba2TiSi2O8). The hardness and Young's modulus of the crystalline layer are about 100% and 50%, respectively, higher than those of the parent glass. The fracture behavior of this layer is highly anisotropic, as a result of the crystallization texture.
Fichier sous embargo
Fichier sous embargo
Fichier sous embargo
0 4 16
Année Mois Jours
Avant la publication
dimanche 15 septembre 2024
Fichier sous embargo
0 4 16
Année Mois Jours
Avant la publication
dimanche 15 septembre 2024
Fichier sous embargo
dimanche 15 septembre 2024
Connectez-vous pour demander l'accès au fichier

Dates et versions

hal-04532711 , version 1 (17-04-2024)

Identifiants

Citer

Pierre Mezeix, T. To, Patrick Houizot, Fabrice Celarie, Tanguy Rouxel. Crystallization and mechanical properties of a barium titanosilicate glass. Journal of Materials Science, 2024, 59, pp.4620-4635. ⟨10.1007/s10853-024-09518-3⟩. ⟨hal-04532711⟩
0 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More