Premium
Sealing Evaluation of an Alkaline Earth Silicate Glass for Solid Oxide Fuel/Electrolyser Cells
Author(s) -
Mahapatra M. K.,
Lu K.
Publication year - 2011
Publication title -
fuel cells
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.485
H-Index - 69
eISSN - 1615-6854
pISSN - 1615-6846
DOI - 10.1002/fuce.201000016
Subject(s) - materials science , oxide , solid oxide fuel cell , seal (emblem) , temperature cycling , alloy , electrolyte , composite material , layer (electronics) , silicate glass , thermal , metallurgy , chemistry , art , physics , electrode , meteorology , visual arts
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 tri‐layer 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.