发明名称 |
METHOD FOR PRODUCING STAINLESS STEEL FOR FUEL CELL SEPARATORS, STAINLESS STEEL FOR FUEL CELL SEPARATORS, FUEL CELL SEPARATOR, AND FUEL CELL |
摘要 |
To provide a method for producing stainless steel having excellent conductivity and durability for use in a fuel cell separator, stainless steel for use in a fuel cell separator, a fuel cell separator, and a fuel cell. Specifically, the stainless steel for use in a fuel cell separator is produced by subjecting stainless steel containing 16 mass% or more of Cr to electrolytic treatment and thereafter to immersion treatment in a solution containing fluorine. The electrolytic treatment is carried out by anodic electrolyzation or by a combination of anodic electrolyzation and cathodic electrolyzation, and an anodic electrolytic quantity Qa and a cathodic electrolytic quantity Qc preferably satisfy the relationship: Qa ‰¥ Qc. The solution containing fluorine preferably has a temperature of 40°C or higher, and hydrofluoric acid concentration [HF] (mass%) and nitric acid concentration [HNO 3 ] (mass%) satisfying the relationship: [HF] ‰¥ 0.8 × [HNO 3 ]. |
申请公布号 |
EP2667439(A4) |
申请公布日期 |
2016.01.20 |
申请号 |
EP20110856235 |
申请日期 |
2011.01.19 |
申请人 |
JFE STEEL CORPORATION |
发明人 |
IDE, SHINSUKE;ISHII, TOMOHIRO;ISHIKAWA, SHIN;KATO, YASUSHI |
分类号 |
H01M8/02;C23C8/80;C25F3/00;H01M8/10 |
主分类号 |
H01M8/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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