Glass Seal with Ceramic Fiber for a Solid Oxide Fuel Cell Stack
    1.
    发明公开
    Glass Seal with Ceramic Fiber for a Solid Oxide Fuel Cell Stack 审中-公开
    Glasdichtung mit keramischer FaserfürFestoxidbrennstoffzehllenstapel

    公开(公告)号:EP2028707A2

    公开(公告)日:2009-02-25

    申请号:EP08157924.5

    申请日:2008-06-10

    摘要: A glass ceramic composition for sealing adjacent metal cassettes in an SOFC stack. The seal composition comprises an alumina-silicate glass ceramic matrix and a ceramic fiber aggregate dispersed in the matrix. Preferably, the fiber is selected from the group consisting of zirconium oxide fiber, alumina fiber, and combinations thereof. Preferably, the fiber is present at 1-60 weight percent with respect to the weight of glass ceramic, preferably about 30 weight percent. Preferably, the zirconia is stabilized by up to about 10% yttria. Alumina fiber may substitute for a portion of the zirconia fiber. Preferably, a green seal is die cut from a green tape sheet formed by extrusion of a slurry comprising water and a latex binder. The green seal is sintered during the final SOFC stack assembly process to form the final stack seal.

    摘要翻译: 一种用于密封SOFC堆叠中的相邻金属盒的玻璃陶瓷组合物。 密封组合物包括分散在基体中的氧化铝 - 硅酸盐玻璃陶瓷基体和陶瓷纤维聚集体。 优选地,纤维选自氧化锆纤维,氧化铝纤维及其组合。 优选地,纤维相对于玻璃陶瓷的重量为1-60重量%,优选约30重量%。 优选地,氧化锆通过高达约10%的氧化钇稳定。 氧化铝纤维可代替一部分氧化锆纤维。 优选地,将绿色密封件从通过挤出包含水和胶乳粘合剂的浆料形成的生片带片切割。 绿色密封件在最终的SOFC堆组装过程中被烧结以形成最终的堆叠密封。