Toho Titanium Co., Ltd.

Syogo Tsumagari

Yasuhiko Goto

Yosuke Inoue

Masashi Hayakawa

A method for manufacturing a porous metal body according to the present invention includes: a surface oxidizing step of heating a titanium-containing powder in an atmosphere containing oxygen at a temperature of 250° C. or more for 30 minutes or more to provide a surface-oxidized powder; and a sintering step of depositing the surface-oxidized powder in a dry process, and sintering the surface-oxidized powder by heating it in a reduced pressure atmosphere or an inert atmosphere at a temperature of 950° C. or more.

Method for manufacturing porous metal body, and porous metal body

To provide a titanium-based porous body that has high void fraction to ensure gas permeability and water permeability for practical use as an electrode and a filter, has a large specific surface area to ensure conductivity and sufficient reaction sites with a reaction solution or a reaction gas, thus showing excellent reaction efficiency, and contains less contaminants because of no organic substance used. A titanium-based porous body having a specific void fraction and a high specific surface area is obtained by filling an irregular-shaped titanium powder having an average particle size of 10 to 50 &#x3bc;m in a dry system without using any binder or the like into a thickness of 4.0&#xd7;10to 1.6 mm, and sintering the irregular-shaped titanium powder at 800 to 1100&#xb0; C.

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Kanagawa, Japan

Syogo Tsumagari