High hardness fine grained beta tungsten carbide

Details High hardness fine grained beta tungsten carbide High hardness fine grained beta tungsten carbide

1991-02-01

1994-01-11

Pianalto, Bernard

Stock material or miscellaneous articles

Composite

Of metal

427249, 4272552, 427294, 427405, 4274197, 428698, 428699, B05B 1504

Patent

active

052779874

ABSTRACT:
An extremely hard, fine grained tungsten carbide produced by thermochemical deposition is described. The tungsten carbide consists primarily of substantially pure tungsten carbide wherein the tungsten carbide consists of WC.sub.1-x, where x is 0 to about 0.4. The disclosed tungsten carbide is free of columnar grains and consists essentially of extremely fine, equiaxial crystals. Also disclosed is a method of producing the disclosed material.

REFERENCES:
patent: 3368914 (1968-02-01), Darnell et al.
patent: 3389977 (1968-06-01), Tarver
patent: 3574672 (1971-04-01), Tarver
patent: 3814625 (1974-06-01), Lewis et al.
patent: 4162345 (1979-07-01), Holzl
patent: 4427445 (1984-01-01), Holzl et al.
patent: 4855188 (1989-08-01), Garg et al.
patent: 4874642 (1989-10-01), Garg et al.

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