The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 30, 2008
Filed:
Oct. 11, 2006
Michael Edward Badding, Campbell, NY (US);
Sasha Marjanovic, Painted Post, NY (US);
Linda Ruth Pinckney, Corning, NY (US);
Dell Joseph St Julien, Watkins Glen, NY (US);
Michael Edward Badding, Campbell, NY (US);
Sasha Marjanovic, Painted Post, NY (US);
Linda Ruth Pinckney, Corning, NY (US);
Dell Joseph St Julien, Watkins Glen, NY (US);
Corning Incorporated, Corning, NY (US);
Abstract
The invention is directed to highly crystalline, frit-sintered glass-ceramic materials and seals made using them that are suitable for solid oxide fuel cell applications. The seals have a coefficient of thermal expansion in the range of 70-130×10° C., preferably 85-115×10° C. The glass-ceramic materials have a crystalline component and a glass component, the crystalline component being>50% of the glass-ceramic and the glass component being<50%. In one preferred embodiment the crystalline component is >75%. Regarding the crystalline component only,>50% of the crystals in the crystalline component of the glass-ceramic has a structure selected from the structural groups represented by walstromite, cyclowollastonite, μ-(Ca,Sr)SiO, kalsilite, kaliophilite and wollastonite (the primary crystalline phase) and the remaining <50% of the crystalline component is at least one secondary crystalline phase. Generally, the glass-ceramics of the invention are useful as metal-to-metal, metal-to-ceramic and ceramic-to-ceramic sealing agents.