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          Institute: MPI für Plasmaphysik     Collection: Articles, Books, Inbooks     Display Documents

ID: 112173.0, MPI für Plasmaphysik / Articles, Books, Inbooks
Tungsten coating on JET divertor tiles for erosion/deposition studies
Authors:Lehto, S.; Likonen, J.; Coad, J. P.; Ahlgren, T.; Hole, D. E.; Mayer, M.; Maier, H.; Kolehmainen, J.
Research Context:22nd Symposium on Fusion Technology (SOFT 2002), Helsinki, 2002-09-09 to 2002-09-13
Date of Publication (YYYY-MM-DD):2003
Title of Journal:Fusion Engineering and Design
Journal Abbrev.:Fusion Eng. and Design
Start Page:241
End Page:245
Copyright:Copyright © 2003 Elsevier B.V. All rights reserved.
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:Six Joint European Torus (JET) divertor tiles were coated with tungsten marker stripes for erosion/deposition studies. The average thickness was 3.4 μm and the film was uniform within 5% across and within 10% along the stripe. Small amounts of impurities C, Fe, Ni and Cr were found and the in-plane stress was 965 MPa. Resistance to high heat loads was tested in the Neutral Beam Test-bed at JET where a coated carbon fibre composite block was exposed to a total of 113 pulses with a maximum peak power density of 15.7 MW m-2 and a maximum surface temperature of 1280 °C. No visible changes as a result of thermal cycling nor sputtering of the film by deuterium could be detected.
Free Keywords:Tungsten coating; Erosion; Deposition; Divertor tiles; JET
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Plasmaphysik/Material Research (MF)
External Affiliations:VTT Processes, Association EURATOM-Tekes, P.O. Box 1608, FIN-02044 VTT, Finland; UKAEA Fusion, UKAEA/EURATOM Fusion Assoc., Abingdon, OxonOX14 4DB, UK; Accelerator Laboratory, University of Helsinki, Association EURATOM-Tekes, P.O. Box 64, FIN-00014 University of Helsinki, Helsinki, Finland; School of Engineering, University of Sussex, Brighton, BN1 9QH, East Sussex, UK; DIARC Technology Inc., Olarinluoma 15, FIN-02200, Espoo, Finland
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