Metal porous body

Patent metadata

Field	Value
Publication number	US-11466343-B2
Application number	US-201816970992-A
Country	US
Kind code	B2
Filing date	Dec 6, 2018
Priority date	Feb 22, 2018
Publication date	Oct 11, 2022
Grant date	Oct 11, 2022

Abstract

A metal porous body having a three-dimensional network structure, includes: a framework forming the three-dimensional network structure; and a coating layer having fine pores and coating the framework, the three-dimensional network structure including a rib and a node connecting a plurality of ribs, the framework including an alkali-resistant first metal, the fine pores having an average fine pore diameter of 10 nm or more and 1 μm or less, the coating layer including an alkali-resistant second metal and optionally including an alkali-soluble metal, the alkali-soluble metal being contained at a proportion of 0% by mass or more and 30% by mass or less with reference to a total mass of the framework and the coating layer.

First claim

The invention claimed is:

1. A metal porous body having a three-dimensional network structure, comprising:
a framework forming the three-dimensional network structure; and
a coating layer having fine pores and coating the framework,
the three-dimensional network structure including a rib and a node connecting a plurality of ribs,
the framework including an alkali-resistant first metal,
the fine pores having an average fine pore diameter of 10 nm or more and 192 nm or less,
the coating layer being composed of an alloy including an alkali-resistant second metal and an alkali-soluble metal, wherein the alloy including the alkali-resistant second metal and the alkali-soluble metal is a NiZn alloy that includes Ni 2 Zn 11 ,
the alkali-soluble metal being contained at a proportion exceeding 0% by mass and 30% by mass or less with reference to a total mass of the framework and the coating layer.

2. The metal porous body according to claim 1 , wherein the metal porous body has a porosity of 40% or more and 97% or less.

3. The metal porous body according to claim 1 , wherein when the framework is observed in cross section at a magnification of 3,000 times, five or less voids having a longer diameter of 1 μm or more are observed in any area 10 μm square.

4. The metal porous body according to claim 1 , wherein the alkali-resistant first metal includes at least one selected from the group consisting of Ni, Fe, Ti, Cr and Co.

5. The metal porous body according to claim 1 , wherein the rib and the node are internally hollow.

6. The metal porous body according to claim 5 , wherein the hollow is triangular in shape in a cross section orthogonal to a longitudinal direction of the rib.

Assignees

• Sumitomo Electric Industries
• Nat Univ Corp Yokohama Nat Univ

Inventors

• Okuno Kazuki
• Higashino Takahiro
• Tawarayama Hiromasa
• Majima Masatoshi
• Masumura Haruki
• Kuroda Yoshiyuki
• Mitsushima Shigenori

Classifications

• C23F1/02

  Local etching · CPC title

• C23F1/44

  Compositions for etching metallic material from a metallic material substrate of different composition · CPC title

• C25D1/08

  Perforated or foraminous objects, e.g. sieves (C25D1/10 takes precedence) · CPC title

• C22F1/10

  of nickel or cobalt or alloys based thereon · CPC title

• C22F1/00

  Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working (apparatus for mechanical working of metal B21, B23, B24) · CPC title