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Ceramic Composite Films formed by Aerosol Co-Deposition : Overview and Potential Applications

Titelangaben

Exner, Jörg ; Schubert, Michael ; Hanft, Dominik ; Bruckner, Michaela ; Fuierer, Paul ; Moos, Ralf:
Ceramic Composite Films formed by Aerosol Co-Deposition : Overview and Potential Applications.
2017
Veranstaltung: 8th International Conference on Electroceramics (ICE2017) , 28.-31.05.2017 , Nagoya, Japan.
(Veranstaltungsbeitrag: Kongress/Konferenz/Symposium/Tagung , Poster )

Abstract

The fabrication of high-quality functional ceramic films has gained importance in the last decades. Aerosol deposition (AD) has received much attention during the past ten years due to its ability to deposit a large variety of ceramic materials on almost all types of substrates. The unique feature of this spray coating technique is the possibility to form dense, nanocrystalline ceramic films directly from ceramic powder without the need for heat treatment during or after deposition. Recently, a further development of AD called Aerosol Co-Deposition (AcD) emerged, where powder mixtures of two or more different materials were used instead of powders of one single material. The opportunity to produce composite films by AcD adds another degree of freedom to the deposition process, since properties of the sprayed film can be easily modified through its composition. Resulting films exhibit homogeneously distributed particles in the submicron size range as well as high strength and adhesion to the substrate. Ceramic materials that cannot be processed by conventional AD due to unsuitable powder properties can herewith be sprayed to composite films, followed by a subsequent in situ calcination. Three different material systems were compared to examine the potential of Aerosol Co-Deposition. First, semiconducting oxygen sensing strontium titanate ferrate (STF) with varying amounts of Al2O3 were sprayed to composite films in order to tune its conductivity. In another approach, a mixture of Bi2O3:TiO2 according to a Bi4Ti3O12 stoichiometry was used to form a dielectric film through co-deposition and subsequent in situ calcination. Similar to the previous attempt, a mixture of Bi2O3:V2O5 with stoichiometry Bi4V2O11 was prepared, with the intention of forming an oxide ion conducting ceramic.

Weitere Angaben

Publikationsform: Veranstaltungsbeitrag (Poster)
Begutachteter Beitrag: Ja
Institutionen der Universität: Fakultäten > Fakultät für Ingenieurwissenschaften
Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Funktionsmaterialien > Lehrstuhl Funktionsmaterialien - Univ.-Prof. Dr.-Ing. Ralf Moos
Profilfelder > Advanced Fields > Neue Materialien
Forschungseinrichtungen > Forschungszentren > Bayreuther Materialzentrum - BayMAT
Fakultäten
Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Funktionsmaterialien
Profilfelder
Profilfelder > Advanced Fields
Forschungseinrichtungen
Forschungseinrichtungen > Forschungszentren
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften
Eingestellt am: 06 Jun 2017 14:31
Letzte Änderung: 06 Jun 2017 14:31
URI: https://eref.uni-bayreuth.de/id/eprint/37425