Process and usage of ceriated tungsten electrode material

Details Process and usage of ceriated tungsten electrode material Process and usage of ceriated tungsten electrode material

1985-09-03

1987-07-07

Lechert, Jr., Stephen J.

Stock material or miscellaneous articles

All metal or with adjacent metals

Having metal particles

72274, 72286, 72378, 21914521, 21914621, 21914622, 21914631, 419 4, B22F 704

Patent

active

046787186

ABSTRACT:
The mentioned ceriated tungsten material is a non-radioactive, hardly consumable or nonconsumable matallic electrode material, utilized in the inert gas shield arc welding, plasma welding, cutting, spray coating and smelting. It can also be used as electrodes for laser transmitting source and gas discharging light source. Moreover, the said material can be utilized to make as the cathodic filament used in film deposition by electronic beam under vacuum, etc. This invention employs the technique of powder metallurgy, by strictly controlling the processing parameters to fabricate the ceriated-tungsten material, containing 1.0-4.5%* ceric oxide. Thereby, the difficulties, that had been existed for quite a long time of its processing brittleness in forging the ceriated tungsten material over 1.0%, have now been satisfactorily overcome.

REFERENCES:
patent: 2744183 (1956-05-01), Conant
patent: 2825703 (1958-03-01), Conant
patent: 4213027 (1980-07-01), Bykhovsky et al.
patent: 4229873 (1980-10-01), Bykhovsky et al.
V. N. Romanova et al, The Effect of Various Additives on the Properties of Tungsten, Sep. 1969, pp. 1-12.
D. M. Rabkin et al, The Effect of Oxide Additives of Certain Rare Earth Metals on the Properties of Tungsten Electrodes, 1964, Electric Welding Inst., pp. 5-9 and translation.
I. Y. Kondratov et al, Thermoemission of Alloys of Tungsten-Rare Earth Metal Oxide, 1967 USSR Academy of Sciences, No. 9(57), pp. 79-83 and translation.

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