Method for producing an open-pored molded body which is has a modified surface and which is made of a metal

US12303981B2 · kind B2 · utility

Assignees

• Alantum Europe GmbH · DE
• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Tilo Buettner · Dresden, DE
• Gunnar Walther · Dresden, DE
• Hans-Dietrich Boehm · Dresden, DE
• Thomas Weissgaerber · Dresden, DE
• Bernd Kieback · Rabenau, DE
• Christian MUELLER · Mainz, DE
• Robin Kolvenbach · Munich, DE
• Lars Torkuhl · Munich, DE

Key dates

• Filing date: Sep 14, 2018
• Grant date: May 20, 2025
• Expiry date: Jun 21, 2039

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C25D5/56
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention relates to a method for producing open-pore molded metal bodies which have a modified surface. The surface of an open-pore molded metal body said molded body being used as a semi-finished product, is coated with particles of a chemical compound of a metal on particles of the metal which can be reduced or thermally or chemically decomposed in a thermal treatment. After the coating process, at least one thermal treatment is carried out, in which the produced metal particles are connected to the surface of the semi-finished product and/or adjacent produced particles via sintered necks or sintered bridges such that the specific surface area of the obtained open-pore molded body is increased to at least 30 m2/l and/or at least by a factor of 5 in comparison to the starting material of the uncoated metal semi-finished product.