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Statements

Subject Item
n2:RIV%2F61389021%3A_____%2F11%3A00370373%21RIV12-AV0-61389021
rdf:type
skos:Concept n21:Vysledek
dcterms:description
A hybrid DC arc plasma torch, combining water and gas stabilization, offers a high flexibility in plasma characteristics. These can be controlled in a wide range by the torch operational parameters, such as arc current and secondary gas flow rate. In this study, their influence on plasma spraying of tungsten and copper was investigated. To suppress the in-flight oxidation of the metals, inert gas shrouding was applied. In-flight particle diagnostics, analysis of free-flight particles and coatings was performed for spraying experiments in the open atmosphere and with argon shrouding. Both in-flight particle behavior and coating properties were found to be sensitive to the torch parameters. The application of shrouding was found to affect particle in-flight parameters, reduce the oxide content in the coatings and generally improve their properties, such as thermal conductivity. However, different degree of these effects was observed for copper and tungsten. A hybrid DC arc plasma torch, combining water and gas stabilization, offers a high flexibility in plasma characteristics. These can be controlled in a wide range by the torch operational parameters, such as arc current and secondary gas flow rate. In this study, their influence on plasma spraying of tungsten and copper was investigated. To suppress the in-flight oxidation of the metals, inert gas shrouding was applied. In-flight particle diagnostics, analysis of free-flight particles and coatings was performed for spraying experiments in the open atmosphere and with argon shrouding. Both in-flight particle behavior and coating properties were found to be sensitive to the torch parameters. The application of shrouding was found to affect particle in-flight parameters, reduce the oxide content in the coatings and generally improve their properties, such as thermal conductivity. However, different degree of these effects was observed for copper and tungsten.
dcterms:title
Spraying of metallic powders by hybrid gas/water torch and the effects of inert gas shrouding Spraying of metallic powders by hybrid gas/water torch and the effects of inert gas shrouding
skos:prefLabel
Spraying of metallic powders by hybrid gas/water torch and the effects of inert gas shrouding Spraying of metallic powders by hybrid gas/water torch and the effects of inert gas shrouding
skos:notation
RIV/61389021:_____/11:00370373!RIV12-AV0-61389021
n21:predkladatel
n22:ico%3A61389021
n5:aktivita
n19:Z n19:P
n5:aktivity
P(FR-TI2/702), P(GAP205/11/2070), Z(AV0Z20430508)
n5:dodaniDat
n12:2012
n5:domaciTvurceVysledku
Kavka, Tetyana n9:6343767 n9:5285003 n9:9073914
n5:druhVysledku
n10:D
n5:duvernostUdaju
n15:S
n5:entitaPredkladatele
n6:predkladatel
n5:idSjednocenehoVysledku
231674
n5:idVysledku
RIV/61389021:_____/11:00370373
n5:jazykVysledku
n11:eng
n5:klicovaSlova
Hybrid argon-water plasma torch; plasma spraying; shrouding
n5:klicoveSlovo
n13:plasma%20spraying n13:Hybrid%20argon-water%20plasma%20torch n13:shrouding
n5:kontrolniKodProRIV
[16BA3BB77D7A]
n5:mistoKonaniAkce
Hamburg
n5:mistoVydani
Düsseldorf
n5:nazevZdroje
DVS Berichte, vol. 276( Proceedings of the International thermal spray conference 2011)
n5:obor
n14:BL
n5:pocetDomacichTvurcuVysledku
4
n5:pocetTvurcuVysledku
4
n5:projekt
n18:GAP205%2F11%2F2070 n18:FR-TI2%2F702
n5:rokUplatneniVysledku
n12:2011
n5:tvurceVysledku
Hrabovský, Milan Matějíček, Jiří Kavka, Tetyana Ctibor, Pavel
n5:typAkce
n20:WRD
n5:zahajeniAkce
2011-09-27+02:00
n5:zamer
n8:AV0Z20430508
s:numberOfPages
8
n17:hasPublisher
DVS Media GmbH
n16:isbn
978-3-87155-268-7