کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1271090 | 1497552 | 2012 | 12 صفحه PDF | دانلود رایگان |
Diopside (CaMgSi2O6) based glasses compositions containing magnesium orthosilicate or barium aluminosilicates phases have been appraised for sealing applications in solid oxide fuel cells (SOFCs) and other solid-electrolyte devices. The sintering behavior and crystalline phase evolution of glass powders has been investigated under isothermal and non-isothermal conditions in the SOFC operating temperature range (800–900 °C). All the glass compositions exhibited two-stage shrinkage behavior resulting in well sintered and mechanically strong glass–ceramics with Augite as the primary crystalline phase. The appropriate coefficient of thermal expansion (CTE), long term thermal stability (300 h at 900 °C), high electrical resistivity, good adhesion and minimal reactivity with SOFC components makes the investigated glass–ceramics potential candidates for further experimentation as SOFC sealants.
► Diopside combined with Mg2SiO4 and BaSi2O5 glass–ceramics were evaluated for SOFC application.
► Single Augite crystalline phase was developed during different heat treatment conditions.
► Investigated glass–ceramics are showing stable CTE values.
► The glasses were found to be chemical compatible with Crofer22APU metallic interconnect.
Journal: International Journal of Hydrogen Energy - Volume 37, Issue 17, September 2012, Pages 12528–12539