Spraying of metallic powders by hybrid gas/water torch and the effects of inert gas shrouding

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F12%3A00376631" target="_blank" >RIV/61389021:_____/12:00376631 - isvavai.cz</a>
Result on the web
<a href="http://www.springerlink.com/content/j07t3222hnv87882/fulltext.pdf" target="_blank" >http://www.springerlink.com/content/j07t3222hnv87882/fulltext.pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s11666-011-9725-y" target="_blank" >10.1007/s11666-011-9725-y</a>

Result language
angličtina
Original language name
Spraying of metallic powders by hybrid gas/water torch and the effects of inert gas shrouding
Original language 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 and analysis of free-flight particles and coatings wasperformed 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, a different degree of these effects was observed for copper and tungsten.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BL - Plasma physics and discharge through gases
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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