Název: Black Chromia Plating for the Solar Radiation Absorbers
Autoři: Brožek, Vlastimil ; Březina, Václav ; Brom, Petr ; Kubatík, Tomáš František ; Vilémová, Monika ; Mastný, L. ; Novák, M.
Typ dokumentu: Příspěvky z konference
Konference/Akce: International Conference on Chemical Technology, ICCT2016 /4./, Mikulov (CZ), 20160425
Rok: 2016
Jazyk: eng
Abstrakt: Black chromia layers were produced on copper, zirconium and aluminium substrates. These layers are aimed to serve as solar collectors. Efficiency of the layers during UV-VIS, UV radiation and WSP® plasma torch radiation is described. The chromia layers were prepared by a new procedure, i.e. deposition of ammonium dichromate solution using plasma torch or so called Liquid Precursor Plasma Spraying (LPPS). Solution of ammonium dichromate is fed into plasma stream, where dissociation takes place under temperatures of 4000 K – 25000 K. Up to nanometric oxide particles can be produced; the resulting size is dependent on solution concentration and feeding nozzle diameter. The particles impact on substrate and form coating. Using 2 wt.% to 5 wt.% solution of ammonium dichromate and feeding nozzle of 0.2 mm in diameter is the size of produced chromia particles about 6 µm which results in formation of 2 µm to 3 µm thick coating, i.e. according to the theory an optimal thickness 2.5 um for absorption layers, necessary condition for formation energy traps for IR radiation emitters up to 100°C. Moreover, black chromia coating is a suitable corrosion barrier of metallic substrates. \n\n
Klíčová slova: black chromia; ceramic coatings; plasma spraying; Solar collector
Číslo projektu: GA15-12145S (CEP)
Poskytovatel projektu: GA ČR
Zdrojový dokument: Proceedings of the 4th International Conference on Chemical Technology, ISBN 978-80-86238-94-4, ISSN 2336-811X

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/11104/0263515

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-261320


Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav fyziky plazmatu
Konferenční materiály > Příspěvky z konference