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:
Jan. 08, 2013
Filed:
Mar. 16, 2005
Joachim Laatsch, Aachen, DE;
Frank Tietz, Julich, DE;
Niels Christiansen, Gentofte, DK;
Petru Gordes, Horsholm, DK;
Gijsbertus Rietveld, Alkmaar, NL;
Nicolaas J. J. Dekker, Amsterdam, NL;
Joachim Laatsch, Aachen, DE;
Frank Tietz, Julich, DE;
Niels Christiansen, Gentofte, DK;
Petru Gordes, Horsholm, DK;
Gijsbertus Rietveld, Alkmaar, NL;
Nicolaas J. J. Dekker, Amsterdam, NL;
Forschungszentrum Jülich GmbH, Jülich, DE;
Topsoe Fuel Cell A/S, Lyngby, DK;
Abstract
The invention relates to a electrically conductive steel-ceramic connection comprising a steel interconnector and an electrically conductive ceramic joining layer arranged thereon. The interconnector comprises a ferritic steel containing Cr in a quantity ranging from 18 to 24% by weight. The ceramic layer contains perovskite of a formula LnSrMnCoOor LnSrFeCoO, wherein 0.1≦x≦0.4, 0.1≦y≦0.6, 0≦δ≦x/2 and Ln=La—Lu. The inventive steel-ceramic connection is usable for a high-temperature fuel cell and regularly exhibits good adhesive properties and a low transition resistance (initial transition resistance R approximately equal to 0.01 Ωcm). Said steel-ceramic connection makes it possible to advantageously introduce a ferritic steel into high-temperature fuel cells. The inventive method for producing said steel-ceramic connection consists in pre-treating an inserted ceramic powder exhibiting good sinterability during an assembly process and during the fuel cell operation.