Method of making a cathode from tungsten powder

Details Method of making a cathode from tungsten powder Method of making a cathode from tungsten powder

1990-01-22

1990-05-29

Lechert, Jr., Stephen J.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Metal and nonmetal in final product

75232, 75234, 75235, 252644, 264 05, 419 27, 419 28, 419 29, 419 33, 419 39, 419 58, 420 1, 445 46, 445 50, B22F 326

Patent

active

049294180

ABSTRACT:
A cathode is made from tungsten powder using as an impregnant the product rmed from adding about 1 mole of a member selected from the group consisting of zirconium, zirconium dioxide, hafnium, hafnium dioxide, uranium, uranium dioxide, titanium, and titanium dioxide to about 50 to about 100 moles of a compound selected from the group consisting of Ba.sub.3 Al.sub.2 O.sub.6, Ba.sub.3 WO.sub.6, and Ba.sub.4 Al.sub.2 O.sub.7.

REFERENCES:
patent: 4594220 (1986-06-01), Hasken et al.
patent: 4818480 (1989-04-01), Branovich et al.
patent: 4840767 (1989-06-01), Branovich et al.
patent: 4873052 (1989-10-01), Haskin et al.
patent: 4895699 (1990-01-01), Branovich et al.

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