Název: Suspension plasma spraying of sub-stoichiometric titania by hybrid water/argon stabilized plasma torch
Autoři: Mušálek, Radek ; Ctibor, Pavel ; Medřický, Jan ; Tesař, Tomáš ; Kotlan, Jiří ; Lukáč, František
Typ dokumentu: Příspěvky z konference
Konference/Akce: METAL 2017: International Conference on Metallurgy and Materials /26./, Brno (CZ), 20170524
Rok: 2017
Jazyk: eng
Abstrakt: In this study, suspension plasma spraying of sub-stoichiometric titania was attempted using hybrid water/argon stabilized plasma torch (WSP-H). Porous coatings with fine cauliflower-like columnar microstructure were successfully deposited in two separate experiments with different power levels of the plasma torch. In both cases, high solid-load content (40 wt. %) of the water-based suspension resulted in considerable coating thickness increase per deposition cycle. Coating annealing and partial remelting of the surface asperities were also achieved by additional pass of plasma torch in front of the coating surface. According to X-ray diffraction, all coatings consisted dominantly of rutile phase. Detailed microscopic observation of the as-sprayed and annealed deposits showed that the local coloration of the coating (ranging from dark blue to beige) was driven by the local overheating of the rough coating surface which could also promote the oxygen intake. Moreover, sample annealing was also observed to increase the sample reflectivity as observed by UV-VIS-NIR scanning spectrophotometry
Klíčová slova: Liquid feedstock; Plasma spraying; Suspension; Thermal spraying; Titania; WSP-H
Číslo projektu: GA15-12145S (CEP)
Poskytovatel projektu: GA ČR
Zdrojový dokument: METAL 2017 - 26th International Conference on Metallurgy and Materials, Conference Proceedings, ISBN 978-80-87294-79-6

Instituce: Ústav fyziky plazmatu AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v příslušném ústavu Akademie věd ČR.
Původní záznam: http://hdl.handle.net/11104/0284348

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-375644


Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav fyziky plazmatu
Konferenční materiály > Příspěvky z konference
 Záznam vytvořen dne 2018-06-19, naposledy upraven 2021-11-24.


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