Open-porous metal foam body and a method for fabricating the same

US9346240B2 · kind B2 · utility

Assignees

• ALANTUM CORPORATION · KR
• Max-Planck-Gesellschaft zur Föderung der Wissenschaften e.V. · US

Inventors

• Gunnar Walther · Dresden, DE
• Burghardt Klöden · Dresden, DE
• Juliane Böhm · Daun, DE
• Tilo Büttner · Strasburg (Uckermark), DE
• Thomas Weissgärber · Dresden, DE
• Bernd Kieback · Rabenau, DE
• Arne Boden · Dresden, DE
• Hans-Dietrich Böhm · Dresden, DE
• Hyuntae Kim · Seongnam-si, KR
• James Choi · Seongnam-si, KR
• Myungjoon Jang · Seongnam-si, KR
• Alexander Böhm · Cologne, DE
• Stefan Fröhlich · Mutlangen, DE
• Winfried Dolling · Weißenbrunn, DE

Key dates

• Filing date: Aug 28, 2013
• Grant date: May 24, 2016
• Expiry date: Jan 14, 2035

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/12479
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Disclosed are an open-porous metal foam and a method for manufacturing the same. An open-porous metal foam according to an exemplary embodiment of the present invention is made of an iron-based alloy including 15 wt % or more of chrome and 5 wt % or more of aluminum. The open-porous metal foam is a semi-product that is formed of iron or the iron-based alloy that does not include chrome and aluminum or includes a smaller amount of chrome and aluminum in the powder when manufacturing, and the surface and the open pore thereof are uniformly coated with the powder of the iron-chrome-aluminum alloy and the organic binding agent. When heat treatment is performed under a reduction atmosphere, sintering is performed. In this case, the metal foam body that is formed of the iron-chrome-aluminum alloy is obtained by compensating concentrations of alloy elements between the semi-product and the powder by diffusion, and a content of chrome and aluminum in the metal foam is smaller than a content of chrome and aluminum included in a starting alloy of the used powder.