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:
May. 12, 2009
Filed:
Aug. 07, 2003
Shinsuki Ide, Chiyoda-ku, JP;
Shin Ishikawa, Chiyoda-ku, JP;
Kenji Takao, Chiyoda-ku, JP;
Osamu Furukimi, Chiyoda-ku, JP;
Kunio Fukuda, Chiyoda-ku, JP;
Atsushi Miyazaki, Chiyoda-ku, JP;
Shinsuki Ide, Chiyoda-ku, JP;
Shin Ishikawa, Chiyoda-ku, JP;
Kenji Takao, Chiyoda-ku, JP;
Osamu Furukimi, Chiyoda-ku, JP;
Kunio Fukuda, Chiyoda-ku, JP;
Atsushi Miyazaki, Chiyoda-ku, JP;
JFE Steel Corporation, , JP;
Abstract
An inexpensive metallic material for interconnects of solid-oxide fuel cells, a fuel cell using the metallic material, and a method for producing the metallic material having excellent oxidation resistance and spalling resistance of an oxide layer, high electrical conductivity, and a small difference in thermal expansion from an electrolyte. Specifically, 0.20 percent by mass or less of C, 0.02 to 1.0 percent by mass of Si, 2.0 percent by mass or less of Mn, 10 to 40 percent by mass of Cr, 0.03 to 5.0 percent by mass of Mo, 0.1 to 3.0 percent by mass of Nb, and at least one element selected from the group consisting of Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Zr, and Hf in a total of 1.0 percent by mass or less are added so as to satisfy 0.1≦Mo/Nb≦30, for decreasing the growth rate of the oxide layer and improving the spalling resistance.