Obiettivo HIGH DENSITY AND SMALL GRAIN SIZE. THE TECHNICAL OBJECTIVE IS THUS TO ACHIEVE THESE REQUIREMENTS THROUGH AN OPTIMIZATION OF POWDER PREPARATION AND FABRICATION. FOR MOST APPLICATIONS THE BEST MANUFACTURED ALUMINA CERAMIC WILL REQUIRE A COMBINATION OF HIGH PURITY, HIGH DENSITY AND SMALL GRAIN SIZE. THE TECHNICAL OBJECTIVE IS THUS TO ACHIEVE THESE REQUIREMENTS THROUGH AN OPTIMIZATION OF POWDER PREPARATION AND FABRICATION. AN IMPORTANT REQUIREMENT OF THE WORK WILL BE TO ACCURATELY CONTROL AND OBSERVE THE MICROSTRUCTURE OF SOME WELL CHARACTERIZED TEST SAMPLES PRODUCED BY PRESSING AND SINTERING A SERIES OF GRADED ALUMINA POWDERS. THE TEST PIECES WILL BE SUBMITTED TO MECHANICAL EVALUATION AND THEIR STRENGTH AND FRACTURE PERFORMANCE WILL BE RELATED TO THEIR MICROSTRUCTURE AND DENSITY PROPERTIES AS WELL AS THE FABRICATION ROUTE CHOSEN. FOR SOME SELECTED WEAR APPLICATIONS THE WEAR RESISTANCE UNDER ABRASIVE CONDITIONS WILL BE MEASURED. A LIMITED NUMBER OF ELECTRICAL CONDUCTIVITY AND IMPURITY ASSESSMENT EXPERIMENTS WILL ALSO BE CARRIED OUT ON SAMPLES INTENDED FOR ELECTRONIC SUBSTRATE AND INSULATOR APPLICATIONS. THIS PROJECT IS A COORDINATED EXERCISE BETWEEN SEVEN PARTICIPANTS: PRODUITS CHIMIQUES UGINE KUHLMANN (FRANCE) POWDER SUPPLY DEVELOPMENT AND CHARACTERISATION CERAMICS DEPT., LEEDS UNIVERSITY (UK) LABORATORY-SCALE FABRICATION ANDERMAN & RYDER (UK) FELDMUHLE (FRG), SUR-129-D) LARGER-SCALE FABRICATION GENERAL ELECTRIC COMPANY (UK) PRODUCT EVALUATION ROYAL WORCESTER INDUSTRIAL CERAMICS (UK) MATERIALS ENGINEERING CENTRE HARWELL, UK, (SUT-122-UK) WILL ACT AS PROJECT COORDINATOR FOR THE PARTICIPATING UNITS. Programma(i) PRE-RAWMAT 2C - Research and development programme (EEC) in the raw materials sector, 1982-1985 Argomento(i) Data not available Invito a presentare proposte Data not available Meccanismo di finanziamento Data not available Coordinatore United Kingdom Atomic Energy Authority (UKAEA) Contributo UE Nessun dato Indirizzo Harwell Laboratory OX11 0RA Didcot Regno Unito Mostra sulla mappa Costo totale Nessun dato Partecipanti (9) Classifica in ordine alfabetico Classifica per Contributo UE Espandi tutto Riduci tutto Andermann and Ryder Regno Unito Contributo UE Nessun dato Indirizzo Mostra sulla mappa Costo totale Nessun dato Feldmühle AG Germania Contributo UE Nessun dato Indirizzo Fritz-Vom-Felde-Platz 4 40547 Düsseldorf Mostra sulla mappa Costo totale Nessun dato General Electric Company plc Regno Unito Contributo UE Nessun dato Indirizzo Mostra sulla mappa Costo totale Nessun dato LABORATORY-SCALE FABRICATION Contributo UE Nessun dato Indirizzo Mostra sulla mappa Costo totale Nessun dato LARGER-SCALE FABRICATION Contributo UE Nessun dato Indirizzo Mostra sulla mappa Costo totale Nessun dato PRODUCT EVALUATIN Contributo UE Nessun dato Indirizzo Mostra sulla mappa Costo totale Nessun dato Produits Chimiques Ugine Kuhlmann Francia Contributo UE Nessun dato Indirizzo Mostra sulla mappa Costo totale Nessun dato Royal Worcester Industrial Ceramics Regno Unito Contributo UE Nessun dato Indirizzo Mostra sulla mappa Costo totale Nessun dato University of Leeds Regno Unito Contributo UE Nessun dato Indirizzo Woodhouse Lane LS2 9JT Leeds Mostra sulla mappa Costo totale Nessun dato
