SEALING MATERIALS AND DEVICES UTILIZING SUCH MATERIALS

摘要

A solid oxide fuel cell device incorporates a sealing material resistant to hydrogen gas permeation at a sealing temperature in the intermediate temperature range of 600° C.-800° C., the seal having a CTE in the 100x10^-7/° C. to 120x10^-7/° C., wherein the sealing material comprises in weight %, of: (i) a 80 to 95 wt % of glass frit, the glass frit itself having a composition in mole percent of: SiO₂ 70-85%; Al₂O₃ 0-5%; Na₂O₃ 0-8%; K₂O 10-25%; ZnO 0-10%; ZrO₂ 0-6%; MgO 0-7%; TiO₂ 0-2%; and (ii) and 5 wt % to 25 wt % of addition comprising at least one of: alumina, zirconia or leucite.