Invention Grant
- Patent Title: Material fuel cell separator, fuel cell separator using same, fuel cell stack, and method of producing fuel cell separator material
-
Application No.: US14237673Application Date: 2011-08-09
-
Publication No.: US09806351B2Publication Date: 2017-10-31
- Inventor: Yoshitaka Shibuya
- Applicant: Yoshitaka Shibuya
- Applicant Address: JP Tokyo
- Assignee: JX Nippon Mining & Metals Corporation
- Current Assignee: JX Nippon Mining & Metals Corporation
- Current Assignee Address: JP Tokyo
- Agency: Jenkins, Wilson, Taylor & Hunt
- International Application: PCT/JP2011/068166 WO 20110809
- International Announcement: WO2013/021465 WO 20130214
- Main IPC: H01M8/24
- IPC: H01M8/24 ; H01M8/0208 ; H01M8/0228

Abstract:
A material for fuel cell separator, wherein a surface layer 6 containing Au and Cr is formed on a surface of a Ti base 2, and an intermediate layer 2a containing Ti, O, Cr, and less than 20 atomic % of Au is present between the Ti base and the surface layer, a thickness of an area containing 65 atomic % or more of Au being 1.5 nm or more, a maximum concentration of Au being 80 atomic % or more, a coating amount of Au being 9000 to 40000 ng/cm2, a ratio represented by (Au coating amount)/(Cr coating amount) being 10 or more, a coating amount of Cr being 200 ng/cm2 or more, and in the intermediate layer having an area containing 10% or more of Ti, 10% or more of O and 20% or more of Cr being 1 nm or more.
Public/Granted literature
Information query