H.c. Starck Gmbh

H. C. Starck, Gmbh & Co Kg

Helmut Meinhardt

Dietmar Fister

Wolfgang Wiezoreck

Bernd Meyer

Matthias Knüwer

Matthias Kn&uuml;wer

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 &#x3c;2 &#x3bc;m, an oxygen content of &#x3c;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&#xb0; C., and a ceramic component is optionally admixed with the resultant metal composite powder.

Process for the production of composite components by powder injection molding, and composite powders suitable for this purpose

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 &mgr;m, 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&deg; C., and a ceramic component is optionally admixed with the resultant metal composite powder.

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Murg, Germany

Helmut Meinhardt