Title:
TITANIUM ALLOY MATERIAL, SEPARATOR, CELL AND FUEL CELL
Document Type and Number:
WIPO Patent Application WO/2017/169712
Kind Code:
A1
Abstract:
A titanium alloy material which is provided with a base (1) and a first oxide layer (2) that is formed on the base (1). The base (1) is formed of a titanium alloy that contains one or more elements M selected from the group consisting of V, Ta and Nb. The first oxide layer (2) contains TiOx (wherein 1 ≤ x < 2) and MOy (wherein 1 ≤ y ≤ 2.5); and the first oxide layer (2) has a thickness of 1-100 nm. The content of the elements M in the base (1) is from 0.6% by mass to 10% by mass (inclusive). This titanium alloy material may additionally comprise a second oxide layer (3) that is formed on the first oxide layer (2). The second oxide layer (3) contains Ti1-zMzO2 (wherein 0 < z ≤ 0.2). This titanium alloy material has excellent corrosion resistance in the environment within a fuel cell, while being capable of maintaining a low contact resistance.
Inventors:
MASAKI YASUHIRO (JP)
NISHIYAMA YOSHITAKA (JP)
IMAMURA JUNKO (JP)
KAMINAKA HIDEYA (JP)
NISHIYAMA YOSHITAKA (JP)
IMAMURA JUNKO (JP)
KAMINAKA HIDEYA (JP)
Application Number:
PCT/JP2017/010087
Publication Date:
October 05, 2017
Filing Date:
March 14, 2017
Export Citation:
Assignee:
NIPPON STEEL & SUMITOMO METAL CORP (JP)
International Classes:
H01M8/0202; C22C14/00; C23C8/12; C23C8/16; C23C8/80; C23C28/04; H01M8/10; C22F1/00; C22F1/18
Foreign References:
| US20050189041A1 | 2005-09-01 | |||
| JP2007048753A | 2007-02-22 | |||
| JP2015515538A | 2015-05-28 | |||
| JP2008176988A | 2008-07-31 | |||
| JP2007131947A | 2007-05-31 |
Attorney, Agent or Firm:
ASCEND IP LAW FIRM (JP)
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