Metal treatment – Stock – Aluminum base
Reexamination Certificate
2005-01-18
2005-01-18
Elve, M. Alexandra (Department: 1725)
Metal treatment
Stock
Aluminum base
C148S538000, C148S549000
Reexamination Certificate
active
06843865
ABSTRACT:
A novel product composed of a ceramic phase particle dispersoid in metal, including uniformly distributed, finely sized carbide phase particles formed in situ in a molten metal and a novel method for producing such a ceramic phase particle dispersoid in metal are disclosed. A salt-based liquid state reaction involving a liquid metal/alloy containing a liquid Ti, B, Si, Sc, Hf, Nb, Ta, Zr, Mo, Al (when the molten metal matrix is not aluminum), or V and a halide salt containing carbon particles forms a uniform distribution of finely sized ceramic phase particles formed and dispersed in-situ in the metal matrix. The ceramic dispersoid in metal product of the present invention includes at least about 50 volume percent of a matrix metal of aluminum; and up to about 50 volume percent of a uniform distribution of finely sized ceramic phase particles formed and dispersed in-situ in the aluminum metal matrix, wherein the finely sized ceramic phase particles have an average particle diameter of less than about 2.5 microns, and wherein the uniform distribution consists of a substantially cluster-free distribution of no more than two particles attached to one another at a magnification of 500×.
REFERENCES:
patent: 3144323 (1964-08-01), Watson et al.
patent: 3459515 (1969-08-01), Bergmann
patent: 4748001 (1988-05-01), Banerji et al.
patent: 4808372 (1989-02-01), Koczak et al.
patent: 4820339 (1989-04-01), Bienvenu et al.
patent: 4842821 (1989-06-01), Banerji et al.
patent: 4885130 (1989-12-01), Claar et al.
patent: 4915908 (1990-04-01), Nagle et al.
patent: 4917964 (1990-04-01), Moshier et al.
patent: 5041263 (1991-08-01), Sigworth
patent: 5104616 (1992-04-01), Backerud et al.
patent: 5401338 (1995-03-01), Lin
patent: 5405427 (1995-04-01), Eckert
patent: 5421087 (1995-06-01), Newkirk et al.
patent: 5735976 (1998-04-01), Chu et al.
Chu Men Glenn
Ray Siba P.
Alcoa Inc.
Elve M. Alexandra
Glantz Douglas G.
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