Objectif REDUCTION IN PRECIOUS METAL CONSUMPTION AND DEVELOPMENT OF NEW ALLOYS FOR CONTACT MATERIAL WITH THE USE OF ELECTRON BEAM MELTING TECHNOLOGY. ELECTRON BEAM MELTING TECHNOLOGY WILL BE DEVELOPED FOR THE PRODUCTION OF CONTACT MATERIALS. LOCAL MELTING AND RESOLIDIFICATION OF A MIXTURE OF DEPOSITED METAL LAYERS BY INTENSIVE HEATING WITH AN ELECTRON BEAM SHOWS A NUMBER OF ADVANTAGES AMOGST WHICH THE MOST IMPORTANT ARE: - REDUCTION IN THE AMOUNT OF PRECIOUS METALS NEEDED, BY RESOLIDIFICATION OF A SURFACE LAYER METAL MIXTURE ONLY; - DEVELOPMENT OF NEW AND BINARY AND TERNARY ALLOYS SYSTEMS NOT NORMALLY PRODUCIBLE VIA CONVENTIONAL BULK-CASTING METHODS; PRODUCTION OF IMPROVED HOMOGENEOUS AND CONTAMINATION-FREE CONTACT MATERIALS; USE OF A WELL DEVELOPED TECHNOLOGY IN A ONE-STEP OPERATION. THE PROJECT WILL CONSIST OF THE FOLLOWING TOPICS: - SELECTION OF ALLOY SYSTEMS AND COMPOSITIONS BASED ON THERMODYNAMIC DATA. PREDICTION OF EXPECTED SOLIDIFICATION MORPHOLOGY AND RELATED PROPERTIES; - OPTIMIZING EXISTING ELECTRON BEAM EQUIPMENT FOR THE PRESENT APPLICATION; - PRODUCTION OF MATERIALS BY VAPOUR OR LECTROLYTIC DEPOSITION TOGETHER WITH ELECTRON BEAM SURFACE MELTING; - CHARACTERIZATION OF THE MICROSTRUCTURE AND PHYSICAL PROPERTIES OF THE NEWLY DEVELOPED MATERIALS; - TESTING OF TYPICAL ELECTRICAL AND MECHANICAL PROPERTIES OF THE MATERIALS FOR CONTACT APPLICATIONS. HAZEMEYER HOLEC, THE NETHERLANDS, (SUM-027-NL), WILL CARRY OUT THE FINAL MATERIALS TESTING PART OF THIS PROJECT. FOM INSTITUTE (THE NETHERLANDS) WILL, IN ADDITION, BE ASSOCIATED WITH TU OF DELFT AT VARIOUS STAGES OF THE RESEARCH. Programme(s) PRE-RAWMAT 2C - Research and development programme (EEC) in the raw materials sector, 1982-1985 Thème(s) Data not available Appel à propositions Data not available Régime de financement Data not available Coordinateur TECHNICAL UNIVERSITY OF DELFT Contribution de l’UE Aucune donnée Adresse DEPT.OF METALS SCIENCE AND TECHNOLOGY 137, ROTTERDAMSWEG NL-2628 AL DELFT Pays-Bas Voir sur la carte Coût total Aucune donnée Participants (1) Trier par ordre alphabétique Trier par contribution de l’UE Tout développer Tout réduire HAZEMEYER HOLEC Pays-Bas Contribution de l’UE Aucune donnée Adresse Voir sur la carte Coût total Aucune donnée