Mechano-chemical process for production of high density and ultr

Details Mechano-chemical process for production of high density and ultr Mechano-chemical process for production of high density and ultr

1997-08-13

1998-11-24

Jenkins, Daniel J.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Powder pretreatment

419 34, 419 38, 419 39, 419 44, 419 47, 419 55, 419 58, B22F 312

Patent

active

058421084

ABSTRACT:
A method for producing high density and ultrafine W/Cu bulk material by a mechano-chemical process is disclosed. In the method of this invention, metal salts as start materials are spray-dried and prepare W--Cu precursor powder having uniformly-dispersed tungsten and copper components. The W--Cu precursor powder in turn is subjected to a desalting and milling process, thus preparing W--Cu oxide composite powder. Thereafter, the W--Cu oxide composite powder may be formed into a formed green body prior to reducing and sintering under hydrogen atmosphere.

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