Patent ID: 7585456
Filing Date: 2009-09-08
Classification: B22F

Abstract:
1. Process for manufacturing composite metal/ceramic thin films, consisting of: a) preparing a suspension (S) in an organic solvent starting from a substantially homogenous mixture of ceramic reinforcements, metallic powder, a binder, a plasticizer and a dispersant, the metallic powder constituting at least 5% by weight of the suspension, wherein the metallic powder is copper, aluminum, silver, gold, nickel, titanium, chromium, zinc, or an alloy of two or more of these materials; b) tape casting the suspension to form a thin film, and then de-binding said thin film; and c) densifying the de-binded thin film in a furnace by hot rolling and annealing the film; d) wherein the suspension (S) is made by mixing: at least one metallic powder and at least one ceramic reinforcement constituting together about 30 to 60% of the total volume of the suspension; an organic solvent constituting about 15 to 45% of the volume of the suspension; a binder and a plasticizer constituting about 30 to 70% of the volume of the suspension; a dispersant representing about 0.1 to 2% by weight of the ceramic reinforcement and metallic powder; and additives representing about 0.01 to 2% of the mass of the metallic powder and ceramic reinforcement.