Thermal, structural and crystallization kinetics of SiO2–BaO–ZnO–B2O3–Al2O3 glass samples as a sealant for SOFC

Abstract The present work describes the development of a glass-ceramic in SiO 2 –BaO–ZnO–B 2 O 3 –Al 2 O 3 system. The prepared glass samples were found to have good compatibility to act as a sealant in planar solid oxide fuel cell (SOFC) in terms of coefficient of thermal expansion (TEC) and glass transition temperature (T g ). The crystallization kinetics of present glass samples were investigated by various characterization techniques such as differential thermal analyzer (DTA), Dilatometery , X-Ray diffraction (XRD) and scanning electron microscopy (SEM). The crystallization behavior of the chosen glass samples was influenced by replacing B 2 O 3 with Al 2 O 3 . With the addition of Al 2 O 3 there is increase in glass transition temperature (T g ) and glass crystallization temperature (T c ). Also with the addition of Al 2 O 3 crystallization phenomenon is hindered. XRD and SEM study was done at various temperatures for different time durations. The detail of the above discussed study is done in the present paper.