Process For Producing A Porous Metallic Or Ceramic Component And A Component Produced With The Process

Abstract: In the process an open-cell polymeric foam body is provided with a metallic coating or coating at the surfaces of cell walls of the foam body. At the surface regions of the semifinished product a suspension formed with metallic or ceramic particles and which additionally contains gas bubbles is brought into contact with the surface of the foam body and into a predetermined shape. A portion of this suspension penetrates into open cells of the foam body. This is followed by a thermal treatment in which the liquid is driven out, polymeric components are removed and a sintering is subsequently performed. A first volume region comprising the metal or the ceramic deriving from the suspension and having a lower porosity is formed. A second volume region which is likewise porous and has been formed with the metal or the ceramic from the coating of the cell walls of the semifinished product with the metal or ceramic of the suspension is formed adjacent to this first volume region. The second volume region is joined to the third volume region obtained from the coated foam body.

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