Method for foaming metal in a liquid bath

US11745262B2 · kind B2 · utility

Assignee

• POHLTEC METALFOAM GMBH · DE

Inventors

• Wolfgang Seeliger · Marl, DE
• Stefan Sattler · Bornheim, DE

Key dates

• Filing date: Sep 14, 2018
• Grant date: Sep 5, 2023
• Expiry date: Mar 22, 2040

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C22C1/083
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention relates to a method for producing a metal foam of at least one first metal that contains the main constituent Mg, Al, Pb, Au, Zn, Ti or Fe in a quantity of at least approximately 80 wt. % in relation to the quantity of the at least one first metal, said method comprising the following steps: (I) providing a semi-finished product comprising a foamable mixture that comprises the at least one first metal and at least one foaming agent, (II) submerging the semi-finished product in a heatable bath comprising a liquid, and (III) heating the semi-finished product in the bath in order to foam the foamable mixture by removing gas from the at least one foaming agent for forming the metal foam. The invention also relates to a metal foam, to a composite material that can be obtained by the method, and to a component comprising the metal foam and/or the composite material.