Process for the production of composite components by powder...

Details Process for the production of composite components by powder... Process for the production of composite components by powder...

2005-02-22

2005-02-22

Mai, Ngoclan T. (Department: 1742)

Specialized metallurgical processes, compositions for use therei

Processes

Producing or purifying free metal powder or producing or...

C075S352000, C075S360000, C075S369000

Reexamination Certificate

active

06858060

ABSTRACT:
The invention relates to a process for the production of metallic and metal-ceramic composite components by powder injection molding of a system comprising a metal composite powder, a binder and optionally a ceramic component, where the metal composite powder used is mixed with a protecting liquid in an inert atmosphere before the mixing with the binder. The invention furthermore relates to molybdenum/copper and tungsten/copper composite powders which have a primary metal particle size of predominantly <2 μm, an oxygen content of <0.8% by weight and optionally a ceramic component, to the use of these composite powders for the production of composite components by powder injection molding, and to a process for the preparation of composite powders in which oxides of molybdenum or tungsten and of copper are mixed, dry-ground and reduced using hydrogen at a temperature of from 800 to 1050° C., and a ceramic component is optionally admixed with the resultant metal composite powder.

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Database WPI, Section Ch, Week 7815 Derwent Publications Ltd., London, GB; Class L, p. 03, AN 1978-27489A[15] XP002188188 & JP 53 021014 A (TDK Electronics Co Ltd), Feb. 27, 1978 Zusammenfassung.

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