LOW ALKALI SEALING FRITS, AND SEALS AND DEVICES UTILIZING SUCH FRITS

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.-900° C., the seal having a CTE in the 100x10-7/° C. to 120x10-7/° C., wherein the sealing material comprises in weight %, of:...

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Bibliographische Detailangaben
Hauptverfasser:	CORTRIGHT, JEFFREY E, MORENA, ROBERT M, LAMBERSON, LISA A, MAUREY, PAMELA A
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BASIC ELECTRIC ELEMENTS CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY ELECTRICITY GLASS JOINING GLASS TO GLASS OR OTHER MATERIALS METALLURGY MINERAL OR SLAG WOOL PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS
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Beschreibung
Zusammenfassung:	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.-900° 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 wt % to 100 wt % glass frit, the glass frit itself having a composition comprising in mole percent of: SiO2 15-65; Li2O 0-5; Na2O 0-5; K2O 0-10; MgO 0-5; CaO 0-32; Al2O3 0-10; B2O3 0-50; SrO 0 to 25, wherein the total amount of alkalis is less than 10 mole %; and (ii) zirconia or leucite addition 0 wt % to 30 wt.