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Title:
ALLOY COATING FILM FOR METAL SEPARATOR OF FUEL CELL, METHOD FOR PRODUCING THE SAME, SPUTTERING TARGET MATERIAL, METAL SEPARATOR AND FUEL CELL
Document Type and Number:
WIPO Patent Application WO/2008/075591
Kind Code:
A1
Abstract:
Disclosed is an alloy coating film for metal separators of fuel cells, which is characterized by containing at least one noble metal element selected from Au and Pt and at least one non-noble metal element selected from the group consisting of Ti, Zr, Nb, Hf and Ta, and having a thickness of not less than 2 nm. This alloy coating film for metal separators of fuel cells is further characterized in that the noble metal element/non-noble metal element atomic ratio is from 35/65 to 95/5. Also disclosed are a method for producing an alloy coating film for metal separators of fuel cells, a sputtering target material, a metal separator and a fuel cell. The alloy coating film for metal separators of fuel cells is excellent in corrosion resistance and productivity, while having low contact resistance. This alloy coating film for metal separators of fuel cells is capable of maintaining a low contact resistance for a long time even in a corrosive atmosphere.

Inventors:
SATO TOSHIKI
SUZUKI JUN
ITO YOSHINORI
ITO HIROTAKA
TANIFUJI SHINICHI
Application Number:
PCT/JP2007/073913
Publication Date:
June 26, 2008
Filing Date:
December 12, 2007
Export Citation:
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Assignee:
KOBE STEEL LTD (JP)
SATO TOSHIKI
SUZUKI JUN
ITO YOSHINORI
ITO HIROTAKA
TANIFUJI SHINICHI
International Classes:
H01M8/02; C22C5/02; C22C5/04; C22C14/00; C22C16/00; C22C27/00; C22C27/02; C22F1/05; C22F1/18; C23C14/14; H01M8/10
Domestic Patent References:
WO2006082734A12006-08-10
Foreign References:
JP2001093538A2001-04-06
JP2005285345A2005-10-13
JPS4536286B1
JP2006190643A2006-07-20
JPH10228914A1998-08-25
JP2001006713A2001-01-12
JP2001093538A2001-04-06
JP2006344895A2006-12-21
JP2007245917A2007-09-27
Other References:
See also references of EP 2104169A4
Attorney, Agent or Firm:
OGURI, Shohei et al. (7-13 Nishi-Shimbashi 1-chome,Minato-k, Tokyo 03, JP)
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