Crystallization behavior of BaO–CaO–SiO2–B2O3 glass sealant and adjusting its thermal properties for oxygen transport membrane joining application

Xinfang Li*, Elena Yazhenskikh, Sonja M. Groß-Barsnick*, Stefan Baumann, Patrick Behr, Wendelin Deibert, Thomas Koppitz, Michael Müller, Wilhelm A. Meulenberg, Ghaleb Natour

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

3 Citations (Scopus)

Abstract

In this work, the thermal stability of a BaO–CaO–SiO2–B2O3 glass sealant, named “H”, was investigated by differential scanning calorimetry (DSC). The crystallization behavior of glass H as the sealant matrix was investigated by a combination of experimental X-ray diffraction (XRD) analysis and thermodynamic simulation with the FactSage package. A good agreement was found between the Rietveld refinement of XRD experiments and the FactSage simulation. Particular attention was also given to the influence of the Sr2SiO4 filler added to the glass matrix “H” on the thermal expansion and microstructures of glass-Sr2SiO4 composites by means of dilatometry and scanning electron microscopy (SEM). The reinforced 20 wt% Sr2SiO4 composite (HS2S20) showed excellent properties and, thus, its joining performance was investigated using SrTi0.75Fe0.25O3-δ (STF25) and Aluchrom as promising oxygen transport membrane (OTM) and counterpart, respectively. The joining behaviors were investigated by comparing different joining temperatures. 920 °C is the best joining temperature for HS2S20 sealant.

Original languageEnglish
Pages (from-to)2541-2552
Number of pages12
JournalJournal of the European Ceramic Society
Volume43
Issue number6
DOIs
Publication statusPublished - Jun 2023

Keywords

  • n/a OA procedure
  • CTE
  • Glass sealant
  • Joining
  • OTM
  • Crystallization

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