A method of manufacturing open-pored metallic foam body

A process for preparing an open-pored metal foam body in which an open-pore metal foam body in which no chromium and no aluminum are included as semi-finished iron or an iron-based alloy, the maximum proportion of nickel in the iron or in the Iron-based alloy is kept so small, however, a maximum of 5%, that an α-structure in the microstructure is used, is present, with a powder of a Fecralloy alloy in addition to iron, chromium in an amount of 35% and aluminum in a proportion of 9 , 5% are contained, and an organic binder is coated evenly on its surface and in the open pores; expelled during a heat treatment in a reducing atmosphere, the organic components at a temperature between 300 ° C and 600 ° C and subsequently at a temperature of at least 900 ° C, sintering is performed in which by diffusion a concentration equalization of the alloying elements between semi-finished product and the powder so that a metal foam body made of iron-chromium-aluminum alloy in which chromium in an amount of 22%, aluminum in a proportion of 6%, and nickel in an amount less than 3% are included in addition to iron is obtained in which chromium and aluminum are included with smaller proportions than in the starting alloy of the powder used.