Sealing Evaluation of an Alkaline Earth Silicate Glass for Solid Oxide Fuel/Electrolyser Cells
✍ Scribed by M. K. Mahapatra; K. Lu
- Publisher
- John Wiley and Sons
- Year
- 2011
- Tongue
- English
- Weight
- 714 KB
- Volume
- 11
- Category
- Article
- ISSN
- 1615-6846
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✦ Synopsis
Glass is the most recognised material to seal solid oxide fuel/electrolyser cell components. We have developed a SrO-La 2 O 3 -Al 2 O 3 -SiO 2 (SABS-0) based seal glass with all the desired thermophysical properties and thermochemical stability. In this study, the SABS-0 seal glass is sandwiched between AISI 441 interconnect alloy and fully stabilised ZrO 2 electrolyte for sealing ability evaluation. The sealing performance and the thermal cycling resistance of the trilayer assembly are tested by a pressure leakage test with 3-20 K min -1 heating rates for 2,500 h and 100 thermal cycles.
The sealing strength is evaluated by a rupture strength test. The results show that the SABS-0 glass is hermetic for at least 2,500 h and has high rupture strength for solid oxide fuel/electrolyser cell component sealing. The stress state for the tri-layer assembly has been analysed using three different approaches.