Porous aluminum body and manufacturing method therefor

Patent metadata

Field	Value
Publication number	US-9764385-B2
Application number	US-201314655516-A
Country	US
Kind code	B2
Filing date	Dec 9, 2013
Priority date	Dec 27, 2012
Publication date	Sep 19, 2017
Grant date	Sep 19, 2017

Abstract

A porous aluminum body having high porosity and a manufacturing method therefor are provided, wherein the porous aluminum body can be manufactured by continuous manufacturing steps. In the present invention, this porous aluminum body includes a plurality of aluminum fibers connected to each other. The aluminum fibers each have a plurality of columnar protrusions formed at intervals on an outer peripheral surface of the aluminum fibers, the columnar protrusions protruding outward from the outer peripheral surface. Adjacent aluminum fibers are integrated with the aluminum fibers and the columnar protrusions.

First claim

The invention claimed is:

1. A porous aluminum body comprising a plurality of sintered aluminum fibers, wherein the aluminum fibers each have a plurality of columnar protrusions protruding outward from an outer peripheral surface of the aluminum fibers and are integrated with the aluminum fibers and the columnar protrusions,
wherein the aluminum fibers each have a wire diameter of 40 to 300 μm and the columnar protrusions each have a smaller diameter than the aluminum fibers.

2. The porous aluminum body according to claim 1 , wherein the columnar protrusions each comprise a compound comprising titanium and aluminum at a tip part thereof.

3. The porous aluminum body of claim 1 , wherein the columnar protrusions are formed at intervals in 5 to 100 places per 100 μm in length of the aluminum fibers.

4. The porous aluminum body of claim 1 , wherein the columnar protrusions each have a diameter of 1 to 50 μm.

5. The porous aluminum body of claim 4 , wherein the columnar protrusions having a length of 1 to 500 μm protruding outward from the outer peripheral surface of the aluminum fibers.

6. The porous aluminum body according to claim 3 , wherein the columnar protrusions each comprise a compound comprising titanium and aluminum at a tip part thereof.

7. The porous aluminum body according to claim 1 , wherein the columnar protrusions is formed through the reaction between titanium powder and the aluminum fiber.

8. A porous aluminum body comprising a plurality of sintered aluminum fibers, wherein the aluminum fibers each have a plurality of columnar protrusions protruding outward from an outer peripheral surface of the aluminum fibers and are integrated with the aluminum fibers and the columnar protrusions,
wherein the aluminum fibers each have a wire diameter of 50 to 300 μm and the surface of the aluminum fiber is oxidized; and
the columnar protrusions each have a smaller diameter than the aluminum fibers; and the columnar protrusions comprising Al 3 Ti.

9. The porous aluminum body according to claim 8 , wherein the columnar protrusions is formed through the reaction between titanium powder and the aluminum fiber.

Assignees

• Mitsubishi Materials Corp

Inventors

• Yang Ji-Bin
• Hoshino Koji
• Saiwai Toshihiko

Classifications

• B22F1/062

  Fibrous particles · CPC title

• B22F1/05

  Metallic powder characterised by the size or surface area of the particles · CPC title

• B22F1/052

  characterised by a mixture of particles of different sizes or by the particle size distribution · CPC title

• C22C1/08

  Alloys with open or closed pores · CPC title

• H01M4/661

  Metal or alloys, e.g. alloy coatings (H01M4/669 take precedence) · CPC title