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POWDER METALLURGY OF MULTIPHASE ALLOYS OF REFRACTORY METALS BY USING SINTERACTIVE COMPOSITE POWDERS

Objective


This project met its goal of developing tungsten and molybdenum powders. It also proved that using the Reaction-Spray-Process provides for more homogeneity in the microstructure of specimens that in the mechanical mixing and subsequent forming and sintering processes.
A SPECIAL TECHNIQUE IN METAL POWDER MANUFACTURE IS USED TO PRODUCE IMPROVED REFRACTORY METAL ALLOYS. THESE TUNGSTEN- AND MOLYBDENUM-BASED MATERIALS HAVE TO MEET HIGH DEMANDS NOT ONLY ON MECHANICAL PROPERTIES, BUT ALSO ON HOMOGENEITY, THERMAL AND ELECTRIC CONDUCTIVITY, AND BURN-OFF RESISTANCE; IT IS THEREFORE IMPORTANT TO COMBINE ALL THE REQUESTED CHARACTERISTICS IN AN OPTIMAL WAY. THE TECHNOLOGICAL BASIS FOR THIS PROJECT IS A DORNIER-DEVELOPED METHOD FOR THE PRODUCTION OF METALLIC ALLOY POWDERS, THE SO-CALLED REACTION SPRAY PROCESS (RSV). THE POWDERS MANUFACTURED ACCORDING TO THIS PROCESS ARE CHARACTERIZED BY EXTREMELY HIGH HOMOGENEITY AND SINTER ACTIVITY.

POWDER PRODUCTION AND POWDER PROCESSING IN A LABORATORY SCALE ARE TO BE PERFORMED BY DORNIER, WHILE THE MANUFACTURE OF SAMPLES AND THEIR APPLICATION TESTING ARE TO BE TAKEN OVER BY THE PARTNER COMPANY. THE SELECTION OF THE MATERIAL SYSTEMS AND MATERIAL OPTIMIZATION ARE TO BE COORDINATED WITH THE PARTNER'S ACTIVITIES.

Funding Scheme

CSC - Cost-sharing contracts

Coordinator

Dornier Luftfahrt GmbH
Address
An Der Bundesstraße 31
88039 Friedrichshafen
Germany

Participants (1)

Royal Ordnance Speciality Metals Ltd
United Kingdom
Address

WC2 5BB London