| abstract |
Low Alkali Sealing Fries; AND SEALS AND DEVICES USING SUCH FRIES. It is a solid oxide fuel cell device incorporating a hydrogen gas permeation-resistant sealing material at a sealing temperature in the intermediate temperature range of 600 ° C to 900 ° C, the sealing having a CTE in the range 100x10 7 -7% / C to 120x10 6 -7% / ° C, wherein the sealing material consists, by weight, of: (i) glass frit at 80% to 100% of the by weight, the glass frit itself having a composition comprising, in molar percentage, of: SiO 2 ~ 15-65; Li ~ 20 to 0-5; Na ~ 2 ~ 0 to 0-5; K ~ 2 ~ 0 to 0-10; MgO at 0-5; CaO at 0-32; Al ~ 2 ~ O ~ 3 ~ at 0-10; B ~ 2 ~ O ~ 3 ~ at 0-50; SrO at 0-25, where the total amount of alkali is less than 10 in molar%; and (ii) adding zirconia or leucite at 0% to 30% by weight. |