GLASS COMPOSITION FOR SOLID OXIDE FUEL CELL SEALANT, SEALANT AND THE MANUFACTURING METHOD USING THE SAME

The present invention relates to a glass composition for a solid oxide fuel cell sealant which comprises 55-62 mole% of SiO_2, 0-7 mole% of B_2O_3, 5-30 mole% of BaO+SrO, 1-15 mole% of ZnO and 1-3 mole% of Al_2O_3. In the glass composition, SiO_2/RO (R=Ba, Sr or Zn) is 1.5-2.0. (BaO+SrO)/ZnO is 2.0-...

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Bibliographische Detailangaben
Hauptverfasser:	HWANG, JONG HEE, AN, HUNG KI, LEE, JONG KOO, BAE, SUK ROK, LIM, TEA YOUNG, KIM, JIN HO, KANG, SOG MO, KIM, BIT NAM, LEE, SUK HWA, KIM, IL WON, LEE, MI JAE, CHUNG, WOON JIN, PARK, HYUN A
Format:	Patent
Sprache:	eng ; kor
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:	The present invention relates to a glass composition for a solid oxide fuel cell sealant which comprises 55-62 mole% of SiO_2, 0-7 mole% of B_2O_3, 5-30 mole% of BaO+SrO, 1-15 mole% of ZnO and 1-3 mole% of Al_2O_3. In the glass composition, SiO_2/RO (R=Ba, Sr or Zn) is 1.5-2.0. (BaO+SrO)/ZnO is 2.0-3.0, wherein 5-30 mole% of BaO, 0-23 mole% of SrO and 0-20 mole% of ZnO are contained. The present invention relates to a solid oxide fuel cell sealant additionally comprising 40 wt% or less of ceramic or glass ceramic with a high temperature expansion coefficient of 120x10^-7/°C or more. The present invention is able to secure stability even in being used for long periods of time since the sealant and a solid oxide fuel cell stack have excellent glass stability, mobility and sealing adhesion at high temperatures when a sealant is manufactured by using the glass composition for the solid oxide fuel cell sealant.