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Plasma Sprayed Tungsten-based Coatings and their Usage in Edge Plasma Region of Tokamaks

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F06%3A00041878" target="_blank" >RIV/61389021:_____/06:00041878 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Plasma Sprayed Tungsten-based Coatings and their Usage in Edge Plasma Region of Tokamaks

  • Original language description

    Tungsten is a candidate material for plasma facing components for ITER and other fusion devices. Plasma spraying is among prospective fabrication technologies, thanks to its ability to coat large areas and the possibility of in-situ repair. Several typesof tungsten-based coatings were produced at IPP Prague, using water-stabilized plasma spraying. Their structure, porosity, oxide content and mechanical and thermal properties were characterized. Several stages of the spraying process optimization towards the foreseen application were performed. The usage of these coatings as plasma facing materials (covering different diagnostic tools) in the edge plasma region was tested at the CASTOR tokamak at IPP. Behavior of 0.4-2 mm thick plasma-sprayed surfacesand their influence on the discharge quality was studied. Plasma sprayed tungsten-based samples, solid tungsten and graphite were inserted into the plasma at various radii and exposed to tokamak discharges (30 ms pulse length, 30 kW.

  • Czech name

    Plazmové nástřiky na bázi wolframu a jejich použití v okrajovém plazmatu tokamaku

  • Czech description

    Wolfram je jedním z kandidátských materiálů pro vnitřní komponenty ITERu a dalších fúzních zařízení. Wolframové povlaky byly vytvořeny metodou plazmového stříkání, byly charakterizovány jejich základní vlastnosti a optimalizovány pro nízkou pórovitost, obsah oxidů a vysokou tepelnou vodivost. Rovněž bylo testováno jejich chování v tokamaku Castor. Byl sledován vliv na výboj a sledovány povrchové změny při těchto expozicích. Byl zjištěn minimální vliv na plazma při výboji a nepatrná eroze materiálu.

Classification

  • 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

Result continuities

  • Project

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2006

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Acta Technica CSAV

  • ISSN

    0001-7043

  • e-ISSN

  • Volume of the periodical

    51

  • Issue of the periodical within the volume

    2

  • Country of publishing house

    CZ - CZECH REPUBLIC

  • Number of pages

    13

  • Pages from-to

    179-191

  • UT code for WoS article

  • EID of the result in the Scopus database