Process for producing tungsten heavy alloy sheet by a loose fill

Details Process for producing tungsten heavy alloy sheet by a loose fill Process for producing tungsten heavy alloy sheet by a loose fill

1988-01-14

1988-08-23

Stallard, Wayland

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Liquid phase sintering

75 05AB, 419 34, 419 46, B22F 922

Patent

active

047659521

ABSTRACT:
A process is disclosed for producing tungsten heavy alloy sheet. The process comprises crystallizing from solution the compounds of the component metals of the alloy, and drying the compounds, introducing the compounds into a container so that the compounds are loosely and uniformly packed in the container, the container being made of molybdenum coated with a ceramic, and having the same shape as the sheet which is to be made. The compounds are then reduced to their respective metals and the resulting metal powder is sintered to a density equal to or greater than about 90% of the theoretical density of the alloy to form the sheet.

REFERENCES:
patent: 2467675 (1949-04-01), Kurtz et al.
patent: 2776887 (1957-01-01), Kelly, Jr. et al.
patent: 3176386 (1965-04-01), Grant et al.
patent: 3310400 (1967-03-01), Alexander et al.
patent: 3318696 (1967-05-01), Krock et al.
patent: 3997331 (1976-12-01), Tithey

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