Plasma-induced damage of tungsten coatings on graphite limiters
2007 (English)In: Physica Scripta, ISSN 0031-8949, E-ISSN 1402-4896, Vol. T128, 162-165 p.Article in journal (Refereed) Published
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.
high heat-flux, asdex-upgrade, joint interface, textor, performance, operation, erosion, carbon, cfc
Fusion, Plasma and Space Physics
IdentifiersURN: urn:nbn:se:kth:diva-25610DOI: 10.1088/0031-8949/2007/T128/031ISI: 000246790200032ScopusID: 2-s2.0-42349095748OAI: oai:DiVA.org:kth-25610DiVA: diva2:370556
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
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, 2006.2010-11-172010-10-272011-09-09Bibliographically approved