CHEN Fu WU Yefan
(Jingdezhen Ceramics Institute, Jingdezhen Jiangxi 333001, China)
Abstract:Ba0-A1 203-B2O3－Si02 glass-ceramic sealing material suitable for solid fuel cells was prepared by traditional melting method. The preparation requirements of sealing material can be met after milling 5h, the corresponding particle size is around 0.61 µm and 2.9µm, 99% of the particle size is below 9µm in the corresponding cumulative curve; the SEM of glassceramic AC1 shows that flaky hexagonal celsian crystals growing from surface to outside, sprawl in the whole glassceramic, with a few irregular grains; the resistance of glass-ceramic is reduced with the temperature increasing in the range between 650 -800℃ and the impedance value is 105Ωcm2, indicating the glass-ceramic has quite good insulating property and meets the insulating requirements of IT -SOFC. The interface between AC1 and porous anode slice and the interface between AC1 and dense electrolyte slice were tested by SEM.
Key words: glass-ceramic; sealing; SOFC