Process for producing materials reinforced with...

Specialized metallurgical processes – compositions for use therei – Processes – Producing solid particulate free metal directly from liquid...

Reexamination Certificate

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Reexamination Certificate

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07144441

ABSTRACT:
A method for forming a dispersion-strengthened material containing nanoparticles that are uniformly dispersed in a matrix phase. The method includes adding nanoparticles and a molten material to a container to form a pool within the container and rotating the container to create a convection vortex in the pool. The convection vortex is sufficient to cause the nanoparticles to be incorporated into the molten material so as to yield a molten composite material, and further causes the molten composite material to be ejected from the container. The molten composite material is then cooled to form a solid composite body comprising a uniform dispersion of the nanoparticles.

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patent: 5534086 (1996-07-01), Andrus
patent: 5635654 (1997-06-01), Hebsur et al.
patent: 5908486 (1999-06-01), Flinn et al.
patent: 6251159 (2001-06-01), Angeliu et al.
patent: 6939388 (2005-09-01), Angeliu
patent: 8203809 (1982-11-01), None
patent: WO-00/37241 (2000-06-01), None
Kawabe, A et al., “Fabrication of nanosize SiC particulate reinforced Al alloy composites by using the vortex method”, Shizuoka-ken Shizuoka Kogyo Gijutsu Senta Kenkyu Hokuku (1996), Abstract Only.
EPO Search Report Dated Apr. 12, 2006.

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