Porous copper body, porous copper composite part, method for manufacturing porous copper body, and method for manufacturing porous copper composite part

Patent metadata

Field	Value
Publication number	US-10493528-B2
Application number	US-201615579688-A
Country	US
Kind code	B2
Filing date	May 23, 2016
Priority date	Jun 12, 2015
Publication date	Dec 3, 2019
Grant date	Dec 3, 2019

Abstract

A porous copper body including a skeleton having a three-dimensional network structure is provided. An oxidation-reduction layer formed by an oxidation-reduction treatment is provided on a surface of the skeleton, and the oxygen concentration of the entirety of the skeleton is set to be 0.025 mass % or less.

First claim

The invention claimed is:

1. A porous copper body, comprising:
a skeleton having a three-dimensional network structure,
wherein an oxidation-reduction layer formed by an oxidation-reduction treatment is provided on a surface of the skeleton,
an oxygen concentration of an entirety of the skeleton is set to be 0.025 mass % or less, and
a relative electrical conductivity is in a range of 17.4% to 45.2%.

2. The porous copper body according to claim 1 ,
wherein a specific surface area of an entirety of the porous copper body is set to be 0.01 m 2 /g or greater, and a porosity of the entirety of the porous copper body is set to be in a range of 50% to 90%.

3. The porous copper body according to claim 1 ,
wherein the skeleton is constituted by a sintered body made of a plurality of copper fibers, and in each of the copper fibers, a diameter R is set to be in a range of 0.02 mm to 1.0 mm, and a ratio L/R of a length L to the diameter R is set to be in a range of 4 to 2500.

4. A porous copper composite part, comprising:
a main body of the composite part; and
the porous copper body according to claim 1 bonded to the main body of the composite part.

5. The porous copper composite part according to claim 4 ,
wherein a bonding surface of the main body of the composite part, to which the porous copper body is bonded, is made of copper or a copper alloy, and the porous copper body and the main body of the composite part are bonded to each other through sintering.

6. The porous copper body according to claim 2 ,
wherein the skeleton is constituted by a sintered body made of a plurality of copper fibers, and in each of the copper fibers, a diameter R is set to be in a range of 0.02 mm to 1.0 mm, and a ratio L/R of a length L to the diameter R is set to be in a range of 4 to 2500.

7. A porous copper composite part, comprising:
a main body of the composite part; and
the porous copper body according to claim 2 bonded to the main body of the composite part.

8. A porous copper composite part, comprising:
a main body of the composite part; and
the porous copper body according to claim 3 bonded to the main body of the composite part.

9. The porous copper body according to claim 3 ,
wherein the ratio L/R is in a range of 4 to 50.

Assignees

• Mitsubishi Materials Corp

Inventors

• Kita Koichi
• Kato Jun
• Saiwai Toshihiko

Classifications

• B22F1/062

  Fibrous particles · CPC title

• C22C1/08

  Alloys with open or closed pores · CPC title

• B22F3/1143 Primary

  involving an oxidation, reduction or reaction step · CPC title

• C22C9/00

  Alloys based on copper · CPC title

• B22F7/002

  of porous nature · CPC title