- Patent Title: Steel for solid oxide fuel cells and manufacturing method thereof
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Application No.: US15512417Application Date: 2015-09-30
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Publication No.: US10995384B2Publication Date: 2021-05-04
- Inventor: Kazuhiro Yamamura , Toshihiro Uehara , Shigenori Tanaka
- Applicant: HITACHI METALS, LTD.
- Applicant Address: JP Tokyo
- Assignee: HITACHI METALS, LTD.
- Current Assignee: HITACHI METALS, LTD.
- Current Assignee Address: JP Tokyo
- Agency: Rankin, Hill & Clark LLP
- Priority: JPJP2014-199725 20140930
- International Application: PCT/JP2015/077679 WO 20150930
- International Announcement: WO2016/052591 WO 20160407
- Main IPC: C21D9/46
- IPC: C21D9/46 ; B21B3/02 ; C22C38/50 ; C22C38/00 ; C22C38/02 ; C22C38/04 ; C22C38/06 ; C22C38/42 ; C22C38/44 ; H01M8/021 ; B21B1/22 ; C21D1/26 ; C21D6/00 ; C21D8/02 ; H01M8/124

Abstract:
There is provided a steel for solid oxide fuel cells which contains more than 0 and not more than 0.05 mass % of C, 0.05 mass % or less of N, 0.01 mass % or less of O, 0.2 mass % or less of Al, 0.15 mass % or less of Si, 0.1 to 1.0 mass % of Mn, 20.0 to 25.0 mass % of Cr, more than 0 mass % and not more than 1.0 mass % of Ni, 0.02 to 0.12 mass % of La, 0.1 to 0.5 mass % of Zr, 0.15 to 0.5 mass % of La+Zr, and Fe and impurities as a remainder. The following relational formula is satisfied, and an Fe and Zr-containing intermetallic compound viewed in a ferrite matrix is 1.1 % or less in terms of a visual field area ratio 5(7C+6N)/(7−4(7C+6N))≤Zr≤41(7C+6N)/(7+66(7C+6N)).
Public/Granted literature
- US20170275728A1 STEEL FOR SOLID OXIDE FUEL CELLS AND MANUFACTURING METHOD THEREOF Public/Granted day:2017-09-28
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