Title:
STEEL FOR SOLID OXIDE FUEL CELLS AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2016/052591
Kind Code:
A1
Abstract:
Provided is a steel for solid oxide fuel cells, which contains Zr and has a composition balance that enables a thin plate thereof to achieve stable and excellent oxidation resistance.
A steel for solid oxide fuel cells, which contains, in mass%, more than 0% but 0.05% or less of C, 0.05% or less of N, 0.01% or less of O, 0.2% or less of Al, 0.15% or less of Si, 0.1-1.0% of Mn, 20.0-25.0% of Cr, more than 0% but 1.0% or less of Ni, 0.02-0.12% of La and 0.1-0.5% of Zr, with (La + Zr) being 0.15-0.5%, and with the balance made up of Fe and impurities. This steel for solid oxide fuel cells satisfies the relational expression shown below, and an intermetallic compound that contains Fe and Zr and is observed in the ferrite matrix of this steel for solid oxide fuel cells is 1.1% or less in a field-of-view area ratio.
5(7C + 6N)/(7 - 4(7C + 6N)) ≤ Zr ≤ 41(7C + 6N)/(7 + 66(7C + 6N))
Inventors:
YAMAMURA KAZUHIRO (JP)
UEHARA TOSHIHIRO (JP)
TANAKA SHIGENORI (JP)
UEHARA TOSHIHIRO (JP)
TANAKA SHIGENORI (JP)
Application Number:
PCT/JP2015/077679
Publication Date:
April 07, 2016
Filing Date:
September 30, 2015
Export Citation:
Assignee:
HITACHI METALS LTD (JP)
International Classes:
C22C38/00; B21B1/22; B21B3/02; C21D9/46; C22C38/50; H01M8/0202; H01M8/12
Domestic Patent References:
| WO2011034002A1 | 2011-03-24 | |||
| WO2012144600A1 | 2012-10-26 |
Foreign References:
| JPH06116686A | 1994-04-26 | |||
| JP2004269915A | 2004-09-30 | |||
| JP2013001962A | 2013-01-07 | |||
| JP2014031572A | 2014-02-20 | |||
| JP2014139342A | 2014-07-31 |
Other References:
See also references of EP 3202936A4
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