Interfacial interactions between an alkali-free borosilicate viscous sealing glass and aluminized ferritic stainless steel
| Autor: | Jen-Hsien Hsu, Cheol-Woon Kim, Richard K. Brow |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment Borosilicate glass Scanning electron microscope Sealant Metallurgy Oxide Aluminized steel Energy Engineering and Power Technology chemistry.chemical_element engineering.material chemistry.chemical_compound chemistry Aluminium engineering Solid oxide fuel cell Electrical and Electronic Engineering Physical and Theoretical Chemistry Yttria-stabilized zirconia |
| Zdroj: | Journal of Power Sources. 250:236-241 |
| ISSN: | 0378-7753 |
| DOI: | 10.1016/j.jpowsour.2013.11.018 |
| Popis: | 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 BaAl 2 Si 2 O 8 crystals at the glass/metal interface and that the aluminum concentration in the aluminized steel was significantly depleted with time. |
| Databáze: | OpenAIRE |
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