Interfacial interactions between an alkali-free borosilicate viscous sealing glass and aluminized ferritic stainless steel

An alkali-free, alkaline earth borosilicate glass (designated G73) has been developed as a viscous sealant for use with solid oxide fuel cells (SOFC). In this work, the interfacial interactions that occur between this viscous sealant and aluminized ferritic stainless steel (SS441) under SOFC operati...

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Veröffentlicht in:Journal of power sources 2014-03, Vol.250, p.236-241
Hauptverfasser: Hsu, Jen-Hsien, Kim, Cheol-Woon, Brow, Richard K.
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description An alkali-free, alkaline earth borosilicate glass (designated G73) has been developed as a viscous sealant for use with solid oxide fuel cells (SOFC). In this work, the interfacial interactions that occur between this viscous sealant and aluminized ferritic stainless steel (SS441) under SOFC operational conditions are described. YSZ/glass/aluminized SS441 sandwich seals were held at 800 °C in air for up to 1000 h, and the interfaces were analyzed using analytical scanning electron microscopy (ASEM). Interfacial reactions were also characterized by X-ray diffraction (XRD) analyses of heat-treated mixtures of glass and alumina powders. The results show that the glass reacted with aluminum from the steel to form BaAl2Si2O8 crystals at the glass/metal interface and that the aluminum concentration in the aluminized steel was significantly depleted with time.
doi_str_mv 10.1016/j.jpowsour.2013.11.018
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subjects Aluminized stainless steel
Applied sciences
Direct energy conversion and energy accumulation
Electrical engineering. Electrical power engineering
Electrical power engineering
Electrochemical conversion: primary and secondary batteries, fuel cells
Energy
Energy. Thermal use of fuels
Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc
Exact sciences and technology
Fuel cells
Interfacial interaction
Solid oxide fuel cell
Viscous sealing glass
title Interfacial interactions between an alkali-free borosilicate viscous sealing glass and aluminized ferritic stainless steel
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