Method of preparing powders for hard materials

Details Method of preparing powders for hard materials Method of preparing powders for hard materials

1995-06-05

1997-01-14

Jordan, Charles T.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

419 14, 419 17, 419 18, 423 53, 423 55, 423 58, 423 61, 423 62, 423138, 423140, B22F 100

Patent

active

055949290

ABSTRACT:
According to the invention there is now provided a simple method of preparing a powder containing WC and cobalt and/or nickel. APT-powder and a powder of a basic salt of cobalt and/or cobalt are mixed in water or in mixed solvents. The suspension is stirred to react at temperatures ranging from room temperature to the boiling point of the solution whereby a precipitate is formed, which precipitate is filtered off, dried and finally reduced to a metallic powder.

REFERENCES:
patent: 3440035 (1969-04-01), Iwase et al.
patent: 4388226 (1983-06-01), Derrein et al.
patent: 4765952 (1988-08-01), Kemp, Jr.
patent: 5304342 (1994-04-01), Hall, Jr. et al.
Chemical Abstracts, vol. 120, No. 12, Kim et al., "Production of the ultra fine-composite powders of tungsten carbide-cobalt and tungsten carbide-nickel," Mar. 21, 1994 & Han'Guk Pyomyon Konghak Hoechi, vol. 26, No. 2, 1993 Korea, pp. 87-107.

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