A METHOD FOR FABRICATING AN OPEN-POROUS METAL FOAM BODY, A METAL FOAM BODY FABRICATED THIS WAY AS WELL AS ITS APPLICATIONS

摘要

The invention relates to a method for fabricating an open-porous metal foambody with a nickel base alloy, to a metal foam body fabricated this way aswell as advantageous applications for the separation of specific componentsand pollutants from fluid flows. On the occasion, according to the set objectopen-porous metal foam bodies which have improved mechanical properties, andin addition an enlarged specific surface and/or increased surface roughnessare to be provided. During fabricating it is proceeded such that an open-porous base foam body made of nickel or a nickel base alloy is coated with aliquid binding agent. Subsequent to this, a mixture of a powdery nickel basealloy and an organic component the temperature of phase transformation ofwhich is at least 30 degrees centigrade from its solid phase to the liquidphase is deposited. The temperature should then be below the respectivetemperature of phase transformation. By means of thermal treatment the bindingagent and the organic component are expelled, a portion of the powderparticles is sintered, and a further portion of the powder particles isconnected with the surface of the base foam body in a material-fit manner viasintering bridges.