Original title: Preparation of spheroidized and nano-structural spinels by the SPPS method
Authors: Brožek, Vlastimil ; Lukáč, František ; Medřický, Jan ; Mušálek, Radek ; Mašláni, Alan ; Mastný, L. ; Brodil, R.
Document type: Papers
Conference/Event: International Conference on Chemical Technology, ICCT 2017/5./, Mikulov (CZ), 20170410
Year: 2017
Language: eng
Abstract: Solution Precursor Plasma Spraying (SPPS) method, using hybrid water-stabilised plasma torch (WSP®-H), is presented in this study. Precursor, in a form of a solution of inorganic salts, is injected into the plasma jet, where the temperature can reach up to 25 000 K and a series of reactions lead to the formation of spherical sub-micrometric sized particles. The complete process of evaporating the liquid, crystallization, thermic decomposition, melting and recrystallization takes place in few milliseconds before the particles solidify. Melted nanoparticles can be either directly collected in order to obtain ultrafine powders or deposited onto a substrate to form micro-splats and continuous polycrystalline, and often partially amorphous, coatings. The possibility of continuous and discontinuous changes of stoichiometric composition in tetrahedral and octahedral configurations were analysed for the deposits of MgAl2O4, CoAl2O4 and CoFe2O4 spinels. Furthermore, thin colourful coatings of ruby and modified cobalt oxides were deposited onto ceramic and metallic substrates.
Keywords: ferrites; nanoparticles; ruby; Solution plasma spraying; spinels; suspension plasma spraying
Project no.: GA15-12145S (CEP)
Funding provider: GA ČR
Host item entry: Proceedings of 5th International Conference on Chemical Technology, ISBN 978-80-86238-65-4, ISSN 2336-811X
Note: Související webová stránka: www.icct.cz

Institution: Institute of Plasma Physics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0281864

Permalink: http://www.nusl.cz/ntk/nusl-371597

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Research > Institutes ASCR > Institute of Plasma Physics
Conference materials > Papers
 Record created 2018-03-07, last modified 2020-03-27

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