Specialized metallurgical processes – compositions for use therei – Compositions – Consolidated metal powder compositions
Patent
1993-09-29
1995-08-15
Walsh, Donald P.
Specialized metallurgical processes, compositions for use therei
Compositions
Consolidated metal powder compositions
75240, C22C 2908
Patent
active
054415535
ABSTRACT:
A compacted, single phase or multiphase composite article. Particles for use in the compacted article are produced by providing a precursor compound containing at least one or at least two metals and a coordinating ligand. The compound is heated to remove the coordinating ligand therefrom and increase the surface area thereof. It may then be reacted so that at least one metal forms a metal-containing compound. The particles may be consolidated to form a compacted article, and for this purpose may be used in combination with graphite or diamonds. The metal-containing compound may be a nonmetallic compound including carbides, nitrides and carbonitrides of a refractory metal, such as tungsten. The metal-containing compound may be dispersed in a metal matrix, such as iron, nickel or cobalt. The dispersed nonmetallic compound particles are no larger than about 0.1 micron in particle size and have a volume fraction greater than about 0.15 within the metal matrix.
REFERENCES:
patent: 4419130 (1983-12-01), Slaughter
patent: 4579587 (1986-04-01), Grant et al.
patent: 4749545 (1988-06-01), Begg et al.
patent: 4851041 (1989-07-01), Polizzotti et al.
Kugler Edwin L.
McCandlish Larry E.
Polizzotti Richard S.
Dvorak Joseph J.
Exxon Research and Engineering Company
Jenkins Daniel
Walsh Donald P.
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