Method of fabricating thin-walled articles of tungsten-nickel-ir

Details Method of fabricating thin-walled articles of tungsten-nickel-ir Method of fabricating thin-walled articles of tungsten-nickel-ir

1979-09-18

1982-06-01

Hunt, Brooks H.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

427 34, B22F 500

Patent

active

043326170

ABSTRACT:
The present invention relates to a method for fabricating thin-walled high-density structures oftungsten-nickel-iron alloys. A powdered blend of the selected alloy constituents is plasma sprayed onto a mandrel having the desired article configuration. The sprayed deposit is removed from the mandrel and subjected to liquid phase sintering to provide the alloyed structure. The formation of the thin-walled structure by plasma spraying significantly reduces shrinkage, and cracking while increasing physical properties of the structure over that obtainable by employing previously known powder metallurgical procedures.

REFERENCES:
patent: 2864137 (1958-12-01), Brennan
patent: 3053610 (1962-09-01), Shichman
patent: 3112539 (1963-12-01), Barker
patent: 3490116 (1970-01-01), Cape
patent: 3791851 (1974-02-01), Taylor et al.
patent: 4011076 (1977-03-01), Hovis, Jr. et al.

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