| US 7,585,456 B2 | ||
| Manufacturing process for thin films made of metal/ceramic composite | ||
| Jean-François Silvain, Cestas (France); Thierry Chartier, Feytiat (France); and Pierre-Marie Geffroy, Pluzunet (France) | ||
| Assigned to Centre National de la Recherche Scientifique, Paris Cedex (France) | ||
| Appl. No. 10/433,413 PCT Filed Dec. 06, 2001, PCT No. PCT/FR01/03855 § 371(c)(1), (2), (4) Date Jun. 04, 2003, PCT Pub. No. WO02/45888, PCT Pub. Date Jun. 13, 2002. |
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| Claims priority of application No. 00 15984 (FR), filed on Dec. 08, 2000. | ||
| Prior Publication US 2004/0013556 A1, Jan. 22, 2004 | ||
| Int. Cl. B22F 1/00 (2006.01) | ||
| U.S. Cl. 419—14 [419/13] | 20 Claims |
| 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.
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