Invention Grant
- Patent Title: Stainless steel sheet for fuel cell separators, and production method therefor
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Application No.: US16307238Application Date: 2017-05-22
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Publication No.: US10763517B2Publication Date: 2020-09-01
- Inventor: Takayoshi Yano , Shin Ishikawa
- Applicant: JFE STEEL CORPORATION
- Applicant Address: JP Chiyoda-ku, Tokyo
- Assignee: JFE STEEL CORPORATION
- Current Assignee: JFE STEEL CORPORATION
- Current Assignee Address: JP Chiyoda-ku, Tokyo
- Agency: Kenja IP Law PC
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@1885c9fc com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@2515ace5
- International Application: PCT/JP2017/019088 WO 20170522
- International Announcement: WO2017/212905 WO 20171214
- Main IPC: H01M8/021
- IPC: H01M8/021 ; C22C38/50 ; H01M8/0254 ; H01M8/1006 ; C21D8/02 ; C22C38/04 ; C22C38/02 ; C21D1/74 ; C21D6/00 ; C21D1/76 ; C21D9/46 ; C22C38/00 ; C21D1/26 ; C25D11/34 ; C22C38/60 ; H01M8/0228 ; C25F3/06 ; H01M8/1018 ; C22C38/48 ; C22C38/42 ; C22C38/44 ; C22C38/46 ; C22C38/52
Abstract:
A stainless steel sheet for fuel cell separators comprises: a predetermined chemical composition; and fine precipitates containing Cr and Ti at a steel sheet surface, wherein an average equivalent circular diameter of the fine precipitates is 20 nm or more and 500 nm or less, and a number of the fine precipitates existing per 1 μm2 at the steel sheet surface is three or more.
Public/Granted literature
- US20190296369A1 STAINLESS STEEL SHEET FOR FUEL CELL SEPARATORS, AND PRODUCTION METHOD THEREFOR Public/Granted day:2019-09-26
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