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Exner, Jörg ; Linz, Mario ; Nazarenus, Tobias ; Hanft, Dominik ; Leupold, Nico ; Glosse, Philipp ; Kita, Jaroslaw ; Moos, Ralf:
Powder Aerosol Deposition : Dense Ceramic Thick Films without any Heat Treatment.
2020
Veranstaltung: young Ceramists Additive Manufacturing Forum (yCAM) 2020
, 28.10.-30.10.2020
, Online, Toulouse, France.
(Veranstaltungsbeitrag: Kongress/Konferenz/Symposium/Tagung
,
Vortrag
)
Abstract
Powder aerosol deposition (PAD), also referred to as aerosol deposition (AD) or vacuum kinetic spray (VKS), combines several advantages over conventional ceramic coating processes. Due to its unique deposition mechanism (called room temperature impact consolidation, RTIC), film formation occurs completely at room temperature, yet enables to form fully dense ceramic films without any binders nor sintering processes involved. Furthermore, a large variety of coating materials can be processed, onto almost all substrate materials. Furthermore, the mechanical properties of films like the plasma resistance or the hardness are already exceptional in the as-deposited state. These advantages, in particular the ceramic processing directly at room temperature by just spraying a dry ceramic powder, makes the powder aerosol deposition a unique technique to apply ceramic films. Typical film thicknesses range from 1 µm up to 200 µm. Due to their high quality and density, PAD films are well-suited as electrical insulation layer, as passivation layer against aggressive or oxidizing gas atmospheres or as protection film against mechanical or plasma-induced abrasion. Furthermore, the coatings exhibit a relatively even surface with typical roughness values below 1 µm. In this work, a broad overview of the PAD method is presented. Special attention is paid to PAD’s operation principle and the necessary deposition mechanism, as well as resulting film morphologies and properties. Based on various ceramic material classes (e.g. electrical insulating Al2O3 for passivating films, ionic conducting yttria stabilized zirconia for SOFC, and thermoelectric Bi2Te3 for thermoelectric generators), different aspects of PAD and the particular advantages are summarized using the example of already realized applications.
Weitere Angaben
| Publikationsform: | Veranstaltungsbeitrag (Vortrag) |
|---|---|
| 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: | 04 Nov 2020 09:37 |
| Letzte Änderung: | 17 Jan 2022 14:15 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/59178 |