The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 13, 2018
Filed:
Feb. 20, 2015
Sumitomo Electric Industries, Ltd., Osaka-shi, Osaka, JP;
Sumitomo Electric Toyama Co., Ltd., Imizu-shi, Toyama, JP;
Kazuki Okuno, Hyogo, JP;
Masahiro Kato, Hyogo, JP;
Tomoyuki Awazu, Hyogo, JP;
Masatoshi Majima, Hyogo, JP;
Kengo Tsukamoto, Toyama, JP;
Hitoshi Tsuchida, Toyama, JP;
Hidetoshi Saito, Toyama, JP;
SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka-shi, Osaka, JP;
SUMITOMO ELECTRIC TOYAMA CO., LTD., Imizu-shi, Toyama, JP;
Abstract
An object of the present invention is to provide, at a low cost, a porous metal body that can be used in an electrode of a fuel cell and that has better corrosion resistance. The porous metal body has a three-dimensional mesh-like structure and contains nickel (Ni), tin (Sn), and chromium (Cr). A content ratio of the tin is 10% by mass or more and 25% by mass or less, and a content ratio of the chromium is 1% by mass or more and 10% by mass or less. On a cross section of a skeleton of the porous metal body, the porous metal body contains a solid solution phase of chromium, nickel, and tin. The solid solution phase contains a solid solution phase of chromium and trinickel tin (NiSn), the solid solution phase having a chromium content ratio of 2% by mass or less, and does not contain a solid solution phase that is other than a solid solution phase of chromium and trinickel tin (NiSn) and that has a chromium content ratio of less than 1.5% by mass.