Metal porous material, fuel cell, and method of producing metal porous material
AssigneeSumitomo Electric Toyama Co., Ltd.
InventorsHitoshi Tsuchida, Junichi Nishimura, Seiji Mabuchi
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Abstract
A metal porous material according to an aspect of the present disclosure is a metal porous material in sheet form that includes a frame having a three-dimensional network configuration, wherein the frame includes an alloy including at least nickel (Ni) and chromium (Cr), the frame 11 is a solid solution with iron (Fe), the frame includes a chromium oxide (Cr2O3) layer as an outermost layer and includes a chromium carbide layer located under the chromium oxide layer, the chromium oxide layer has a thickness not less than 0.1 μm and not more than 3 μm, and the chromium carbide layer has a thickness not less than 0.1 μm and not more than 1 μm.
Claims4
A metal porous material in sheet form comprising a frame having a three-dimensional network configuration,
- wherein
- the metal porous material has a porosity not less than 60% and not more than 98%,
- the frame includes an alloy including at least nickel and chromium, the frame is a solid solution with iron, where the iron content is not less than about 200 ppm and not more than about 2000 ppm,
- the frame includes a chromium oxide layer as an outermost layer and includes a chromium carbide layer located under the chromium oxide layer,
- the chromium oxide layer has a thickness not less than 0.1 μm and not more than 3 μm, and
- the chromium carbide layer has a thickness not less than 0.1 μm and not more than 0.5 μm.
Dependencies are inferred from the claim text.