A three-dimensional network porous metallic structure is formed by filling the internal cavity of a mold, which has been prepared by making use of a three-dimensional network resin pattern, through driving the molten metal into the cavity by a pressure or through sucking the molten metal into the cavity...http://www.google.fr/patents/US4235277?utm_source=gb-gplus-shareBrevet US4235277 - Method of forming three-dimensional network porous metallic structure having continuous internal cavity
Method of forming three-dimensional network porous metallic structure having ...
