Thermal cycle stability of a novel glass-mica composite seal for solid oxide fuel cells : Effect of glass volume fraction and stresses
作者： Yeong-Shyung Chou , Jeffry W. Stevenson , Prabhakar Singh
DOI: 10.1016/J.JPOWSOUR.2005.03.213
关键词: Oxide 、 Mica 、 Forensic engineering 、 Volume (thermodynamics) 、 Microstructure 、 Volume fraction 、 Composite material 、 Materials science 、 Seal (mechanical) 、 Composite number 、 Solid oxide fuel cell
摘要: Abstract A novel glass–mica composite seal was developed based on a previously reported concept of “infiltrated” mica seals for solid oxide fuel cells. Ba–Al–Ca silicate sealing glass powder and Phlogopite flakes were mixed at volume fractions 10–50 vol.% to make the seals. The leak tested short-term thermal cycle stability as function fraction. Composite with 10 20 vol.% also under compressive stresses from 3 100 psi helium pressures 0.2 or 2 psi. Post-mortem microstructure analyses used characterize fracture (leak path) related high temperature leakages. Open circuit voltage tests dense 8YSZ electrolyte showed very good over 250 cycles minute (
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