Metallic foam body with controlled grain size on its surface, process for its production and use thereof

摘要

The invention relates to a metallic foam body, comprising
(a) a metallic foam body substrate made of at least one metal or metal alloy A; and
(b) a layer of a metal or metal alloy B present on at least a part of the surface of the metallic foam body substrate (a), wherein A and B differ in their chemical composition and/or in the grain size of the metal or metal alloy;
obtainable by a process comprising the steps
(i) provision of a porous organic polymer foam;
(ii) deposition of at least one metal or metal alloy A on the porous organic polymer foam;
(iii) burning off of the porous organic polymer foam to obtain the metallic foam body substrate (a); and
(iv) deposition by electroplating of the metallic layer (b) of a metal or metal alloy B at least on a part of the surface of the metallic foam body (a). The invention moreover relates to a process for the production of the metallic foam body and a use of the metallic foam body.