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:
Apr. 18, 1995
Filed:
Jul. 16, 1993
Horst Greiner, Forchheim, DE;
Ralf Eck, Reutte, AT;
Gunter Kneringer, Reutte, AT;
Wolfgang Kock, Reutte, AT;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A material for metal components, such as bipolar plates and window foils of high-temperature fuel cell systems, has ceramic solid electrolytes made of yttrium-stabilized zirconium oxide. The material includes a chromium alloy having from 3 to 10 atom % iron and from 0.5 to 5 atom % of rare earth metal and/or rare earth metal oxide, having a coefficient of thermal expansion at a temperature of 200.degree. C. amounting to from 8.5.times.10.sup.-6 to 10.5.times.10.sup.-6 per kelvin by which the temperature rises, and attaining a value at 900.degree. C. in a range from 14.times.10.sup.-6 to 15.times.10.sup.-6.