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Paulus, Daniel ; Kita, Jaroslaw ; Schönauer-Kamin, Daniela ; Moos, Ralf:
X-ray diffraction reveals a new deposition mechanism for Powder Aerosol Deposition of films derived from layered crystalline materials.
2026
Veranstaltung: European Powder Diffraction Conference, EPDIC19
, 23-26 June 2026
, Crans Montana, Switzerland.
(Veranstaltungsbeitrag: Kongress/Konferenz/Symposium/Tagung
,
Poster
)
Abstract
Powder aerosol deposition (PAD) is a coating process that can be used to produce dense ceramic films at room temperature. In this process, a powder is mixed with a carrier gas, and this aerosol-gas mixture is then accelerated through a nozzle and strikes a substrate inside a vacuum chamber. Upon impact with the substrate, the particles break apart and consolidate into a dense ceramic film through room-temperature impact consolidation (RTIC). This process takes place entirely at room temperature, and no phase change occurs during deposition. PAD films are typically characterized by a nanocrystalline microstructure, high microstrain, and intrinsic compressive stress. Our studies have shown that materials with a layered crystal structure and preferred slip systems in the basal plane exhibit a different microstructure and, as a result, must also have a different deposition mechanism. These materials form films with a grain size exceeding 1 μm and exhibiting a strong fibrous texture. Furthermore, the microstrain in these films is less than half that of other materials, and no intrinsic compressive stress is present.
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 > Zentrale wissenschaftliche Einrichtungen > Bayreuther Materialzentrum - BayMAT |
| Titel an der UBT entstanden: | Ja |
| Themengebiete aus DDC: | 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften |
| Eingestellt am: | 16 Jul 2026 06:58 |
| Letzte Änderung: | 16 Jul 2026 06:58 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/99060 |