Powder metallurgy processes – Powder metallurgy processes with heating or sintering – Post sintering operation
Patent
1997-04-30
1999-09-21
Jenkins, Daniel J.
Powder metallurgy processes
Powder metallurgy processes with heating or sintering
Post sintering operation
419 38, 419 54, 419 57, B22F 326
Patent
active
059565586
ABSTRACT:
A fabrication method for a tungsten heavy alloy includes first fabricating a green compact or a sintered body composed of tungsten and other elements except manganese, then putting manganese thereon, and sintering the tungsten heavy alloy with manganese manganese, whereby the formation of pores, which occurs because manganese is oxidized by the deoxidation of oxides existing on the surface of powders of tungsten, nickel and iron is prevented, and a tungsten heavy alloy having a 100% non-theoretical density of 100% is obtained.
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Baek Woon Hyung
Hong Moon Hee
Kim Eun Pyo
Lee Seong
Noh Joon Woong
Agency for Defense Development
Jenkins Daniel J.
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