MEANS FOR SEALING AND CONNECTING ELEMENTS CONSISTING OF CERAMIC MATERIALS WITH DIFFERENT THERMAL EXPANSION COEFFICIENTS, METHOD FOR THE PRODUCTION THEREOF, AND USE OF THE SAME IN A FUEL CELL INSTALLATION

摘要

The invention relates to a means for sealing and connecting elements consisting of ceramic materials with different thermal expansion coefficients, to a method for the production thereof, and to the use of the same in a fuel cell installation. Sealing and connection means must be provided between elements consisting of ceramic materials with different thermal expansion coefficients, for all kinds of technical applications. According to the invention, this is achieved using inorganic composite material combinations which simultaneously detect a connection function and a sealing function for joining the elements. Sealing means are especially created from a targeted crystallised composite glass with a non-crystallising or slightly crystallising amorphous glass region which forms a bearing coating. In this way, a plastic stress relief between the individual elements with different thermal expansion coefficients is ensured. The invention is used in high-temperature fuel cell installations based on a solid oxide fuel cell.