Patent ID: 8303869
Filing Date: 2012-11-06
Classification: B22F,B82Y,C22C,Y10T

Abstract:
1. A method of producing a composite metal material, the method comprising: (a) mixing at least a first carbon material and a particulate metal material Z into an elastomer, and dispersing the first carbon material and the metal material Z by applying a shear force to obtain a composite elastomer, the metal material Z having a melting point lower than a melting point of the first carbon material; (b) heat-treating the composite elastomer in an atmosphere containing oxygen to vaporize the elastomer included in the composite elastomer to obtain an intermediate composite material including a second carbon material, wherein the second carbon material is derived from the first carbon material, and the metal material Z; (c) heat-treating the intermediate composite material together with a substance including an element Y having a melting point lower than the melting point of the metal material Z to vaporize the substance including the element Y; and (d) casting a composite material obtained by the step (c) in a die having a desired shape either directly or after mixing the composite material into a molten matrix metal material to obtain the composite metal material, wherein: