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High temperature seal for joining ceramics and metal alloys

United States Patent

5,725,218
March 10, 1998
View the Complete Patent at the US Patent & Trademark Office
Argonne National Laboratory - Visit the Technology Development and Commercialization Website
For a combination of a membrane of SrFeCo.sub.0.5 O.sub.x and an Inconel alloy, a high-temperature seal is formed between the membrane and the alloy. The seal is interposed between the alloy and the membrane, and is a fritted compound of Sr oxide and boric oxide and a fritted compound of Sr, Fe and Co oxides. The fritted compound of SrFeCo.sub.0.50 O.sub.x is present in the range of from about 30 to 70 percent by weight of the total sealant material and the fritted compound of Sr oxide and boric oxide has a mole ratio of 2 moles of the Sr oxide for each mole of boric oxide. A method of sealing a ceramic to an Inconel metal alloy is also disclosed.
Maiya; P. Subraya (Darien, IL), Picciolo; John J. (Lockport, IL), Emerson; James E. (Plainfield, IL), Dusek; Joseph T. (Lombard, IL), Balachandran; Uthamalingam (Hinsdale, IL)
The University of Chicago (Chicago, IL)
08/ 749,980
November 15, 1996
The United States Government has rights in this invention pursuant to Contract No. W-31-109-ENG-38 between the U.S. Department of Energy and The University of Chicago representing Argonne National Laboratory.