Obiettivo
The objectives of the project are as follows:
a study of spray drying, including characterisation of starting powders and powders produced;
a study of the plasma densification process in air, underwater, and in a controlled atmosphere;
the production of these characteristics on the plasma spray process and the coating properties;
the reproducibility and reliability of the powder production.
Yttria powder and magnesia stabilised zirconia powder have been processed by spray drying. A densification process of the agglomerated particles shows a dense structure with a smooth spherical surface. Parameters and spraying criteria for coating production have been developed. The microstructure of the deposits meets the aerospace standards. With round robin tests, ceramographic methods are developed to obtain reproducible results in coating characterisation. The coatings produced are tested and characterised by thermal behaviour, corrosion, internal stresses, thermal shock and bond strength properties.
In the field of production of thermal barrier coatings from ceramic zirconia powders, the following research has been conducted:
a study of spray drying, including the characterization of the starting and resulting powders;
a study of the plasma densification in air, under water and in a controlled atmosphere;
characterization of densified powders;
coating production by optimization of spraying and correlation with powder characteristics;
development of ceramographic methods to obtain reproducible results;
characterization of coatings by standard metallographic and X-ray techniques, as well as the measurement of physical properties and their correlation with powder characteristics;
testing of coating properties (corrosion, bond strength, thermal shock, etc) and correlation with powder characteristics.
It is possible to produce dense, globular composite powders with the desired particle size distribution. The production routes can be applied to powders other than zirconia composites.
A new production route has been developed for the production of globular dense composite zirconia powders which can be produced in a predefined particle size range. Spray drying and plasma densification of the spray dried powders are the major steps with the powders produced by underwater plasma densification and transferred arc densification exhibiting particularly good flowability. This outstanding flowability makes the powders very suitable for plasma spraying of thermal barrier coatings.
The coatings produced using these powders have been investigated with respect to their structure and their mechanical and thermal properties, and have been shown to be at least as good as those produced using commercially available powders.
THE AIM OF THIS STUDY IS TO ADAPT THE PLASMA SPRAY TECHNIQUE TO IC ENGINES BY STUDYING CAREFULLY THE MATERIAL POINT OF VIEW. THE SPECIFIC INNOVATIC VALUE OF THIS PROJECT WILL BE THREEFOLD:
1) THE PRODUCTION OF POWDERS WITH KNOWN CHARACTERISTICS;
2) THE INFLUENCE OF THESE CHARACTERISTICS ON THE SPRAYING PROCESS AND THE COATING PROPERTIES LIKE CORROSION BEHAVIOUR, MECHANICAL PROPERTIES;3) THE REPRODUCIBILITY AND RELIABILITY OF THE POWDER PRODUCTION.
IF THIS PROJECT SUCCEEDS THE RESULTS WILL BE A BREAK THROUGH NOT ONLY IN THE PRODUCTION OF CHEAPER THERMAL BARRIERS COATINGS BUT ALSO IN THE DEVELOPMENT OF SMALL AND MEDIUM SIZE DIESEL ENGINES WITH LESS COOLING, BETTER PERFORMANCE AND EFFICIENCY UP TO 5 %.
IN ORDER TO ACHIEVE THESE OBJECTIVES, IT IS PROPOSED:
A) A STUDY OF SPRAY DRYING, INCLUDING CHARACTERIZATION OF STARTING POWDERS AND PRODUCED POWDERS;
B) A STUDY OF THE PLASMA DENSIFICATION PROCESS, IN AIR, UNDER WATER AS WELL AS IN A CONTROLLED ATMOSPHERE;
C) CHARACTERIZATION OF DENSIFIED POWDERS (CHEMICAL AND PHYSICAL ANALYSIS);D) COATING PRODUCTION BY OPTIMIZATION OF THE SPRAYING PROCESS AND CORRELATING WITH THE POWDER CHARACTERISTICS;
E) DEVELOPMENT OF CERAMOGRAPHIC METHODS TO OBTAIN REPRODUCIBLE RESULTS (ROUND ROBIN TEST);
F) CHARACTERIZATION OF THE COATINGS WITH STANDARD METALLOGRAPHIC AND X-RAY TECHNIQUES, AS WELL AS THE MEASUREMENT OF PHYSICAL PROPERTIES, AND CORRELATE WITH POWDER CHARACTERISTICS;
H) THE PRODUCTION OF PROTOTYPE AMOUNTS (BATCHSIZE 25 TO 50 KG) OF POWDER FOR COMPONENT TESTING.
AFTER H) COMPONENT SPRAYING AND COMPONENT TESTING WILL FOLLOW, TOGETHER WITH AN ECONOMIC EVALUATION.
Campo scientifico (EuroSciVoc)
CORDIS classifica i progetti con EuroSciVoc, una tassonomia multilingue dei campi scientifici, attraverso un processo semi-automatico basato su tecniche NLP. Cfr.: Il Vocabolario Scientifico Europeo.
CORDIS classifica i progetti con EuroSciVoc, una tassonomia multilingue dei campi scientifici, attraverso un processo semi-automatico basato su tecniche NLP. Cfr.: Il Vocabolario Scientifico Europeo.
- ingegneria e tecnologia ingegneria dei materiali compositi
- ingegneria e tecnologia ingegneria dei materiali rivestimenti e pellicole
È necessario effettuare l’accesso o registrarsi per utilizzare questa funzione
Programma(i)
Programmi di finanziamento pluriennali che definiscono le priorità dell’UE in materia di ricerca e innovazione.
Programmi di finanziamento pluriennali che definiscono le priorità dell’UE in materia di ricerca e innovazione.
Argomento(i)
Gli inviti a presentare proposte sono suddivisi per argomenti. Un argomento definisce un’area o un tema specifico per il quale i candidati possono presentare proposte. La descrizione di un argomento comprende il suo ambito specifico e l’impatto previsto del progetto finanziato.
Dati non disponibili
Gli inviti a presentare proposte sono suddivisi per argomenti. Un argomento definisce un’area o un tema specifico per il quale i candidati possono presentare proposte. La descrizione di un argomento comprende il suo ambito specifico e l’impatto previsto del progetto finanziato.
Invito a presentare proposte
Procedura per invitare i candidati a presentare proposte di progetti, con l’obiettivo di ricevere finanziamenti dall’UE.
Dati non disponibili
Procedura per invitare i candidati a presentare proposte di progetti, con l’obiettivo di ricevere finanziamenti dall’UE.
Meccanismo di finanziamento
Meccanismo di finanziamento (o «Tipo di azione») all’interno di un programma con caratteristiche comuni. Specifica: l’ambito di ciò che viene finanziato; il tasso di rimborso; i criteri di valutazione specifici per qualificarsi per il finanziamento; l’uso di forme semplificate di costi come gli importi forfettari.
Meccanismo di finanziamento (o «Tipo di azione») all’interno di un programma con caratteristiche comuni. Specifica: l’ambito di ciò che viene finanziato; il tasso di rimborso; i criteri di valutazione specifici per qualificarsi per il finanziamento; l’uso di forme semplificate di costi come gli importi forfettari.
Coordinatore
5943 AD Lomm
Paesi Bassi
I costi totali sostenuti dall’organizzazione per partecipare al progetto, compresi i costi diretti e indiretti. Questo importo è un sottoinsieme del bilancio complessivo del progetto.