Objetivo TO REDUCE THE USE OF CHROMIUM BY DEVELOPING SILICON-RICH COATINGS HAVING OPTIMIZED HIGH TEMPERATURE CORROSION RESISTANCE. THE RESEARCH PROGRAMME DEALS WITH THE DEVELOPMENT OF SILICON-RICH HIGH TEMPERATURE CORROSION RESISTANT COATINGS. THE WORK IS DIVIDED INTO TWO MAIN PARTS COVERING METALLIC COATINGS BASED ON THE NI-CR-SI-X SYSTEMS (X=AL, TI, TA, HF, Y, ETC.) AND CERAMIC COATINGS CONSISTING MAINLY OF SIO2, SIC AND SI3N4. CERAMIC COATINGS WILL BE PRODUCED BY 'SOL-GEL' AND PLASMA ASSISTED VAPOUR DEPOSITION, (PAVD) PROCESSES. THE INITIAL EMPHASIS WILL BE ON SIO2, SIC AND SI3N4, COATINGS PRODUCED BY PAVD AND ON SIO2 AND A MODIFIED SILICA ('GEL-GLASS') COATINGS APPLIED BY 'SOL-GEL' TECHNIQUES. SUCH PARAMETERS AS COATING DENSITY, COATING/SUBSTRATE ADHESION, COATING THICKNESS WILL BE INVESTIGATED TO OPTIMIZE MECHANICAL AND CORROSION RESISTANT PROPERTIES. LASER GLAZING POST-COATING TREATMENT WILL BE USED TO IMPROVE DENSIFICATION, ADHESION AND DUCTIBILITY. LASER TREATMENTS WILL BE STUDIED AS A FUNCTION OF POWER, SCAN SPEED, PRE-AND POST-HEAT AND OF THE AREA HEATED. IN ADDITION, OVERGROWTH BY A THERMALLY GROWN OXIDE TO INCORPORATE THE CERAMIC COATING WILL BE INVESTIGATED. AN EVALUATION OF COATING PERFORMANCE WILL BE CARRIED OUT IN ENVIRONMENTS RELEVANT TO GAS TURBINES, POWER PLANT BOILERS, COAL CONVERSION SYSTEMS AND PETROCHEMICAL PLANTS. THE WORK WILL BE SUPPORTED BY: - THERMOCHEMICAL AND KINETIC STUDIES OF SCALE FORMATION ON THE COATING ALLOY SYSTEM; - AN INVESTIGATION OF THE MECHANICAL AND CHEMICAL STABILITY OF THE COATINGS; - A CHARACTERIZATION OF THERMO-MECHANICAL PROPERTIES; - AN ASSESSMENT OF CHEMICAL AND MECHANICAL COATING/SUBSTRATE COMPATIBILITY; - USE OF NON-DESTRUCTIVE TESTING METHODS. THE CENTRAL MATERIALS LABORATORY OF BROWN BOVERI & CO. (FRG), LEDERMANN GMBH, (FRG), IMPERIAL COLLEGE (UK) AND AERE HARWELL (UK) WILL ALL BE INVOLVED AT VARIOUS STAGES OF THIS PROJECT. Programa(s) PRE-RAWMAT 2C - Research and development programme (EEC) in the raw materials sector, 1982-1985 Tema(s) Data not available Convocatoria de propuestas Data not available Régimen de financiación Data not available Coordinador National Physical Laboratory (NPL) Aportación de la UE Sin datos Dirección Queen's Road TW11 0LW Teddington Reino Unido Ver en el mapa Coste total Sin datos Participantes (4) Ordenar alfabéticamente Ordenar por aportación de la UE Ampliar todo Contraer todo Asea Brown Boveri AG Alemania Aportación de la UE Sin datos Dirección Eppelheimer Straße 82 69123 Heidelberg Ver en el mapa Coste total Sin datos IMPERIAL COLLEGE OF SCIENCE, TECHNOLOGY AND MEDICINE Reino Unido Aportación de la UE Sin datos Dirección South Kensington Campus LONDON Ver en el mapa Coste total Sin datos Ledermann GmbH Alemania Aportación de la UE Sin datos Dirección Degenau 3 72160 Horb am Neckar Ver en el mapa Coste total Sin datos United Kingdom Atomic Energy Authority (UKAEA) Reino Unido Aportación de la UE Sin datos Dirección Harwell Laboratory OX11 0RA Didcot Ver en el mapa Coste total Sin datos
