Patent Number: 8,871,357

Title: Method for generating a closed-pore metal foam and component which has a closed-pore metal foam

Abstract: A method for generating a closed-pore metal foam and a component in which such a metal foam is used are provided. To form the metal foam having closed pores, the component is provided with a composite of metal particles that may have a layer of a blowing agent. Alternatively the metal and the blowing agent can also be arranged in layers of a sheet, or as a mixture of particles. A heat treatment is the applied whereby the blowing agent liberates a propellant gas, the blowing agent including fullerenes or nanotubes to which the blowing agent is chemically or physically bound. Due to the high temperature stability of the nanotubes or fullerenes, blowing agents may be thereby generated which liberate propellant gas at temperatures of above 1000 DEG C., such that even metals with high solidus temperatures of above 1000 DEG C. may be processed to metal foams.

Inventors: Heinrichsdorff; Frank (Mahlow, DE), Jensen; Jens Dahl (Berlin, DE), Kruger; Ursus (Berlin, DE), Winkler; Gabriele (Berlin, DE)

Assignee: Siemens Aktiengesellschaft

International Classification: H01F 3/00 (20060101)

Expiration Date: 2018-10-28 0:00:00