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High strength insulating metal-to-ceramic joints for solid oxide fuel cells and other high temperature applications and method of making

United States Patent Application

View the Complete Application at the US Patent & Trademark Office
A seal formed between a metal part and a second part that will remain gas tight in high temperature operating environments which experience frequent thermal cycling, which is particularly useful as an insulating joint in solid oxide fuel cells. A first metal part is attached to an reinforcing material. A glass forming material in the positioned in between the first metal part and the second part, and a seal is formed between the first metal part and the second part by heating the glass to a temperature suitable to melt the glass forming materials. The glass encapsulates and bonds at least a portion of the reinforcing material, thereby adding tremendous strength to the overall seal. A ceramic material may be added to the glass forming materials, to assist in forming an insulating barrier between the first metal part and the second part and to regulating the viscosity of the glass during the heating step.
Weil, K. Scott (Richland, WA), Chick, Lawrence A. (West Richland, WA), Coyle, Christopher A. (Pasco, WA), Hardy, John S. (Richland, WA), Xia, Guanguang (Pasco, WA), Meinhardt, Kerry D. (Kennewick, WA), Sprenkle, Vincent L. (Richland, WA), Paxton, Dean M. (Kennewick, WA)
Battelle Memorial Institute (Intellectual Property Services (K1-53), Pacific Northwest Division, Post Office Box 999 Richland WA 99352)
10/ 948,346
September 22, 2004
STATEMENT OF GOVERNMENT SUPPORT [0001] The invention was made with Government support under Contract DE-FC26-02NT41246, awarded by the U.S. Department of Energy. The Government has certain rights in the invention.