| abstract |
Ceramic foams in which the open cells (3) are connected by a three dimensional, substantially continuous ceramic matrix formed of interconnected hollow ligaments (5), are made from an open-cell, reticulated precursor metal, i.e. a metal foam. The precursor metal first is treated so as to allow a support coating to form thereon, and thereafter the coated precursor is heated above the melting point of the metal in the presence of an oxidant to form an oxidation reaction product.n[EP0261070A1] |