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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BL - Fyzika plasmatu a výboje v plynech

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Thermal Spray Technology

ISSN

1059-9630

e-ISSN

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Svazek periodika

21

Číslo periodika v rámci svazku

3-4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

695-705

Kód UT WoS článku

000303472800039

EID výsledku v databázi Scopus

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