Tungsten alloys containing A15 structure and method for making s

Details Tungsten alloys containing A15 structure and method for making s Tungsten alloys containing A15 structure and method for making s

1982-07-21

1984-01-24

Hunt, Brooks H.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75236, 75248, B22F 704

Patent

active

044274459

ABSTRACT:
A hard fine-grained internally stressed material of tungsten and carbon or tungsten, carbon and oxygen is described which is produced by thermochemical deposition. The material consists primarily of a two phase mixture of pure tungsten and an A15 structure, is free of columnar grain distribution, and has a hardness of greater than 1,200 VHN. The average grain size is less than 0.1 micron.

REFERENCES:
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patent: 3565676 (1971-02-01), Holzl
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patent: 3640689 (1972-02-01), Glaski et al.
patent: 3814625 (1974-06-01), Lewin
patent: 4147820 (1979-04-01), Holzl
patent: 4162345 (1979-07-01), Holzl
N. J. Archer and K. K. Yee, "Chemical Vapour Deposited Tungsten Carbide Wear-Resistant Coatings Formed at Low Temperatures", Wear, vol. 48, pp. 237-250 (1978).
N. J. Archer, "Tungsten Carbide Coatings on Steel" Proceedings of the Conference on Chemical Vapour Deposition, Fifth Int'l. Conference 1975, The Electrochemical Society, Inc., Princeton, N.J.

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