Study of the Crystallization in a Glass-Ceramic Seal - CEA - Commissariat à l’énergie atomique et aux énergies alternatives
Communication Dans Un Congrès Année : 2023

Study of the Crystallization in a Glass-Ceramic Seal

Résumé

Sealing is a major issue in Solid Oxide Cells (SOC) stacks used for hydrogen production. The specifications that seals must meet are particularly demanding. Glass-ceramics such as materials from the MgO-Al2O3-BaO-SiO2-B2O3 system are used. A preliminary treatment allows the initially amorphous material to set up while partially crystallizing. This paper presents the crystallization study of such a material. The main Ba5Si8O21 and BaMg2Si2O7 crystalline phases are identified and the evolution of crystals morphology with the temperature is followed. The BaxSiyOx+2y surface fraction is determined by image analysis as a function of time and temperature. These data allow accessing the equilibrium crystal fraction. It is then possible to optimize the crystallization treatment and to anticipate the microstructural evolution of the glass-ceramic seal operating in the stack.
Fichier principal
Vignette du fichier
ECS_SOFC symp_Proceeding_Laplace.pdf (789.73 Ko) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)

Dates et versions

cea-04175123 , version 1 (01-08-2023)

Identifiants

Citer

Annabelle Laplace-Ploquin, Jean-Gabriel Begos, Charlene Vallat, Elise Regnier, Rémi Moles, et al.. Study of the Crystallization in a Glass-Ceramic Seal. 18th International Symposium on Solid Oxide Fuel Cells (SOFC-XVIII) - 243rd ECS Meeting, May 2023, Boston, United States. pp.2369, ⟨10.1149/11106.2369ecst⟩. ⟨cea-04175123⟩
40 Consultations
41 Téléchargements

Altmetric

Partager

More