| 发明名称 |
STAINLESS STEEL FOR FUEL CELL SEPARATORS |
| 摘要 |
A stainless steel having a low surface contact resistance for fuel cell separators is provided. The stainless steel has a Cr content of 16 to 40 mass % or more. The stainless steel includes a region having a fine textured structure on its surface, and the area percentage of the region is 50% or more, preferably 80% or more. The region having a fine textured structure is a region which has a structure having depressed portions and raised portions at an average interval between depressed portions or raised portions of 20 nm or more and 150 nm or less when observed with a scanning electron microscope. |
| 申请公布号 |
US2017062843(A1) |
申请公布日期 |
2017.03.02 |
| 申请号 |
US201615352266 |
申请日期 |
2016.11.15 |
| 申请人 |
JFE STEEL CORPORATION |
发明人 |
NAGOSHI Masayasu;IDE Shinsuke;ISHIKAWA Shin;MAKIISHI Noriko |
| 分类号 |
H01M8/021;C22C38/48;C22C38/44;C22C38/42;G01R27/20;C22C38/04;C22C38/02;C22C38/00;H01M8/0265;H01M8/0254;C22C38/50;C22C38/06 |
主分类号 |
H01M8/021 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A stainless steel having a low surface contact resistance for fuel cell separators and a Cr content in the range of 16 to 40 mass %, wherein
the stainless steel includes a region having a fine textured structure on its surface, the area percentage of the region being 50% or more, and the region having a fine textured structure is a region which has a structure having depressed portions and raised portions at an average interval between the depressed portions or the raised portions of 20 nm or more and 150 nm or less when observed with a scanning electron microscope, the raised portions having a triangular pyramidal top having an average angle of 80 degrees or more and 100 degrees or less. |
| 地址 |
Tokyo JP |
