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Glass-ceramic material and method of making

United States Patent

August 13, 2002
View the Complete Patent at the US Patent & Trademark Office
Pacific Northwest National Laboratory - Visit the Technology Commercialization Program Website
The present invention is a glass-ceramic material and method of making useful for joining at least two solid ceramic parts. The seal is a blend of M.sub.A O--M.sub.B O.sub.y --SiO.sub.2 that substantially matches a coefficient of thermal expansion of the solid electrolyte. According to the present invention, a series of glass ceramics in the M.sub.A O--M.sub.B O.sub.y --SiO.sub.2 system can be used to join or seal both tubular and planar ceramic solid oxide fuel cells, oxygen electrolyzers, and membrane reactors for the production of syngas, commodity chemicals and other products.
Meinhardt; Kerry D. (Richland, WA), Vienna; John D. (West Richland, WA), Armstrong; Timothy R. (Pasco, WA), Pederson; Larry R. (Kennewick, WA)
Battelle Memorial Institute (Richland, WA)
09/ 365,343
July 30, 1999
This invention was made with Government support under Contract DE-AC0676RLO1830 awarded by the U.S. Department of Energy. The Government has certain rights in the invention.