Method of making an alloy of tungsten and lanthana

Details Method of making an alloy of tungsten and lanthana Method of making an alloy of tungsten and lanthana

1995-07-26

1996-12-31

Mai, Ngoclan

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Metal and nonmetal in final product

419 38, 419 44, 419 54, C22C 110

Patent

active

055903860

ABSTRACT:
In a method of making alloy of tungsten and lanthana, lanthanum hydroxide is blended with tungsten metal powder, the mixture is pressed to form a pressed ingot, optionally presintered, and sintered to form the alloy. The use of lanthanum hydroxide as the source of the lanthana dopant allows the pressed or presintered ingots to be stored in air prior to sintering for prolonged periods without becoming degraded from exposure to atmospheric moisture.

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Timofeeva, N. I., et al; Reaction of Rare-Earth Element Oxides with Water 1970, Izv. Akad. Nauk SSSR, Neorg. Matter. 6(3), 605.

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