发明公开
EP2738279A1 STAINLESS STEEL FOR FUEL CELL SEPARATOR
审中-公开
ROSTFREIER STAHLFÜRBRENNSTOFFZELLENSEPARATOR
- 专利标题： STAINLESS STEEL FOR FUEL CELL SEPARATOR
- 专利标题（中）： ROSTFREIER STAHLFÜRBRENNSTOFFZELLENSEPARATOR
-
申请号： EP12820243.9申请日： 2012-07-25
-
公开(公告)号： EP2738279A1公开(公告)日： 2014-06-04
- 发明人: MAKIISHI, Noriko , NORO, Hisato , ISHIKAWA, Shin , IDE, Shinsuke , ISHII, Tomohiro , NAGOSHI, Masayasu
- 申请人： JFE Steel Corporation
- 申请人地址： 2-3, Uchisaiwaicho 2-chome Chiyoda-ku Tokyo 100-0011 JP
- 专利权人： JFE Steel Corporation
- 当前专利权人： JFE Steel Corporation
- 当前专利权人地址： 2-3, Uchisaiwaicho 2-chome Chiyoda-ku Tokyo 100-0011 JP
- 代理机构： Stebbing, Timothy Charles
- 优先权： JP2011166579 20110729
- 国际公布： WO2013018322 20130207
- 主分类号： C22C38/00
- IPC分类号： C22C38/00 ; C22C38/44 ; C22C38/50 ; C23F1/00 ; C23F17/00 ; C23G1/08 ; C25F1/06 ; H01M8/02 ; C23C22/34 ; H01M8/10
摘要：
Stainless steel for fuel cell separators are provided which exhibit stable contact resistance characteristics and excellent practical utility.
The stainless steel contains not less than 16 mass% of Cr. When the surface configuration of the stainless steel is analyzed with a scanning electron microscope at a spatial resolution of not more than 0.1 µm, the surface modulus is not less than 1.02. Preferably, the chemical composition further includes C: not more than 0.03%, Si: not more than 1.0%, Mn: not more than 1.0%, S: not more than 0.01%, P: not more than 0.05%, Al: not more than 0.20%, N: not more than 0.03%, Cr: 16 to 40%, and one or more of Ni: not more than 20%, Cu: not more than 0.6% and Mo: not more than 2.5%, the balance being Fe and inevitable impurities.
The stainless steel contains not less than 16 mass% of Cr. When the surface configuration of the stainless steel is analyzed with a scanning electron microscope at a spatial resolution of not more than 0.1 µm, the surface modulus is not less than 1.02. Preferably, the chemical composition further includes C: not more than 0.03%, Si: not more than 1.0%, Mn: not more than 1.0%, S: not more than 0.01%, P: not more than 0.05%, Al: not more than 0.20%, N: not more than 0.03%, Cr: 16 to 40%, and one or more of Ni: not more than 20%, Cu: not more than 0.6% and Mo: not more than 2.5%, the balance being Fe and inevitable impurities.
信息查询
