Open-porous metal foam body and a method of fabricating the same

The invention discloses an open-porous metal foam body and a method of fabricating the same, the open-porous metal foam body in the invention is formed by iron-based alloy, and the alloy comprises more than 15 weight percent of chromium and more than 5 weight percent of aluminum. The open-porous metal foam body is a half-finished product formed by iron and iron-based alloy, in manufacture, the open-porous metal foam body does not contain chromium and aluminum, or the content of the chromium and aluminum is lower than the content of the chromium and aluminum in iron-chromium-aluminum alloy powder, and iron-chromium-aluminum alloy powder and organic adhesives are uniformly coated on the surface of the half-finished product and opening air holes. What' s more, in the same time that thermal processing is performed under the reducing atmosphere, sintering is performed. Then, concentration complementation of alloy elements between the half-finished product and the powder is realized via diffusion, thereby forming a