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In-flight oxidation of iron particles sprayed using gas and water stabilized plasma torch
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SYSNO ASEP 0027496 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title In-flight oxidation of iron particles sprayed using gas and water stabilized plasma torch Title Oxidace částic železa za letu při stříkání pomocí plazmového hořáku stabilizovaného plynem a vodou Author(s) Espie, G. (FR)
Denoirjean, A. (FR)
Fauchais, P. (FR)
Clabbe, J.C. (FR)
Dubský, Jiří (UFP-V) RID
Schneeweiss, O. (CZ)
Voleník, Karel (UFP-V)Source Title Surface and Coatings Technology. - : Elsevier - ISSN 0257-8972
Roč. 195, č. 1 (2005), s. 17-28Number of pages 12 s. Language eng - English Country NL - Netherlands Keywords in-flight oxidation ; gas stabilized plasma ; water stabilized plasma Subject RIV JH - Ceramics, Fire-Resistant Materials and Glass CEZ AV0Z20430508 - UFP-V (2005-2011) Annotation This paper is devoted to thestudy of the oxidation of iron (low carbon) particles during their flight in d.c. plasma jets flowing in air as well as the oxidation after the impact and solidification of particles onto the substrate. Two types of torches have been studied: a conventional one: gas stabilized plasma (GPS) with an effective power Peff = 18 kW and a more exotic one: water stabilized plasma (WSP) with Peff = 139 kW. Besides their power levels, their main difference lies in the plasma gas specific mass downstream of the anode attachment almost 10 times lower in GSP than in WSP with correspondingly the plasma temperature 10000 K higher than for WSP. TheGSP oxidation is promoted by the convective movement induced within the liquid metal droplets by the plasma flow in the jet core. In-flight oxidation shows strong similarities for both techniques with mainly the formation of non-stoichiometric FexO. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2006
Number of the records: 1