Plasma spraying tungsten heavy alloys

Details Plasma spraying tungsten heavy alloys Plasma spraying tungsten heavy alloys

1991-05-30

1993-03-02

Walsh, Donald P.

Metal treatment

Process of modifying or maintaining internal physical...

Heating or cooling of solid metal

420430, 75346, B22F 100

Patent

active

H00011460

ABSTRACT:
Tungsten heavy alloys comprising by weight from about 80 to about 100% tuten and from about 0 to about 20% of one or more heavy alloying metals are produced by introducing powders of tungsten and the alloying metals into a thermal spray plasma gun, melting the powders in the hot zone of the gun to form a molten alloy and then spraying the molten alloy in droplet form into a collecting chamber where the droplets are solidified, and the resultant alloy in powdered form is collected. The powdered alloy can be further mixed with powdered copper, iron, nickel, cobalt or tantalum and compacted by dynamic or explosive compaction to form a near full density material. Full density materials are produced by further thermomechanical processing of the compact.

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patent: 4784690 (1988-11-01), Mullendore
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patent: 4908182 (1990-03-01), Whang
patent: 4990195 (1991-02-01), Spencer et al.
patent: 5102452 (1992-04-01), Taskinen et al.

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