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Plasma-induced damage of tungsten coatings on graphite limiters
KTH, School of Electrical Engineering (EES), Fusion Plasma Physics. KTH, School of Electrical Engineering (EES), Centres, Alfvén Laboratory Centre for Space and Fusion Plasma Physics.ORCID iD: 0000-0001-9901-6296
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2007 (English)In: Physica Scripta, ISSN 0031-8949, E-ISSN 1402-4896, Vol. T128, 162-165 p.Article in journal (Refereed) Published
Abstract [en]

Vaccum plasma sprayed tungsten coatings with an evaporated sandwich Re - W interlayer on graphite limiter blocks were studied after the experimental campaign in the TEXTOR tokamak. The coating morphology was modified by high-heat loads and co-deposition of species from the plasma. Co-deposits contained fuel species, carbon, boron and silicon. X-ray diffractometer phase analysis indicated the coexistence of metallic tungsten and its carbides (WC and W2C) and boride (W2B). In the Re - W layer the presence of carbon was detected in a several micrometres thick zone. In the overheated part of the limiter, the Re - W layer was transformed into a sigma phase.

Place, publisher, year, edition, pages
2007. Vol. T128, 162-165 p.
Keyword [en]
high heat-flux, asdex-upgrade, joint interface, textor, performance, operation, erosion, carbon, cfc
National Category
Fusion, Plasma and Space Physics
Identifiers
URN: urn:nbn:se:kth:diva-25610DOI: 10.1088/0031-8949/2007/T128/031ISI: 000246790200032Scopus ID: 2-s2.0-42349095748OAI: oai:DiVA.org:kth-25610DiVA: diva2:370556
Conference
11th International Workshop on Plasma-Facing Materials and Components for Fusion Applications Max Planck Inst Plasma Phys, Greifswald Branch, Greifswald, GERMANY, OCT 10-12, 2006
Note
11th International Workshop on Plasma-Facing Materials and Components for Fusion Applications. Location: Max Planck Inst Plasma Phys, Greifswald Branch, Greifswald, GERMANY. Date: OCT 10-12, 2006.Available from: 2010-11-17 Created: 2010-10-27 Last updated: 2017-12-12Bibliographically approved

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Rubel, Marek J.

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