Title:
STAINLESS STEEL FOR FUEL CELL SEPARATOR PLATE AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2017/052047
Kind Code:
A1
Abstract:
Stainless steel for a fuel cell separator plate and a manufacturing method therefor are disclosed. The stainless steel for a fuel cell separator plate, according to one embodiment of the present invention, comprises: a stainless base material; and a passive film formed on the stainless base material, wherein a Cr/Fe atomic weight ratio in a 1 nm or less thickness region of the stainless base material, which is adjacent to an interface between the stainless base material and the passive film, is 0.45 or more. Therefore, by modifying the surface of the stainless steel for a fuel cell separator plate, a low interface contact resistance and a good corrosion resistance can be obtained, and a separate additional process such as precious metal coating can be removed, such that manufacturing costs are reduced and productivity can be improved.
Inventors:
KIM KWANG MIN (KR)
KIM JONG HEE (KR)
JO KI HOON (KR)
SEO BO SUNG (KR)
KIM JONG HEE (KR)
JO KI HOON (KR)
SEO BO SUNG (KR)
Application Number:
PCT/KR2016/007557
Publication Date:
March 30, 2017
Filing Date:
July 29, 2016
Export Citation:
Assignee:
POSCO (KR)
International Classes:
H01M2/16; C22C38/44; C22C38/48; C22C38/50; H01M8/1018
Foreign References:
| KR100777123B1 | 2007-11-19 | |||
| KR20100080379A | 2010-07-08 | |||
| JP2013129896A | 2013-07-04 | |||
| KR20120073648A | 2012-07-05 | |||
| JP2004149920A | 2004-05-27 |
Other References:
See also references of EP 3363926A4
Attorney, Agent or Firm:
SELIM INTELLECTUAL PROPERTY LAW FIRM (KR)
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