Method for sintering tungsten powder

Details Method for sintering tungsten powder Method for sintering tungsten powder

2005-05-31

2005-05-31

Jenkins, Daniel J. (Department: 1742)

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Metal and nonmetal in final product

C419S045000

Reexamination Certificate

active

06899845

ABSTRACT:
A formed body prepared by compacting tungsten powders is embedded in a powder mixture capable of performing combustion synthesis, a part of the powder mixture is powerfully heated to ignite the part and perform combustion synthesis, by the heat of formation released, a temperature of a formed body is instantaneously elevated to induce a sintering reaction, and a high temperature state is retained to convert a whole of the formed body into sintered tungsten.

REFERENCES:
patent: 5188678 (1993-02-01), Sekhar et al.
patent: 5380409 (1995-01-01), Munir et al.
patent: 5996385 (1999-12-01), Kecskes
patent: 1344592 (2003-09-01), None
patent: 1344759 (2003-09-01), None
Derwent 2000-298826, “Combustion synthesis process for manufacutring cemented carbide involves molding of reacitve owder mixture, heating by applying pressure, sintering and recovering”, 2 pages, Apr. 28, 2000.

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