X-ray microbeam transmission/fluorescence method for non-destructive characterization of tungsten coated carbon materials

I. Tiseanu (Corresponding Author), M. Mayer, T. Craciunescu, Antti Hakola, Seppo Koivuranta, Jari Likonen, C. Ruset, C. Dobrea, ASDEX Upgrade Team

    Research output: Contribution to journalArticleScientificpeer-review

    6 Citations (Scopus)

    Abstract

    Tungsten erosion, its subsequent transport and redeposition are of great interest, because a full tungsten divertor is foreseen to be used during the deuterium-tritium operational phase of ITER. The erosion of tungsten and carbon marker layers was extensively studied in the outer divertor of ASDEX Upgrade (AUG), and work is currently in progress to completely replace the existing JET CFC tiles with tungsten-coated tiles within the JET ITER-like wall project. The need for fast and non-destructive method which allows the quantitative determination of the thickness of a tungsten coating on a carbon material on large areas led us to evaluate a combined absorption/fluorescence X-ray (XRTF) technique. The method can provide fast analysis, high spatial resolution and a material selective detection of deposited layers and inclusions. It was applied on W coated fine grain graphite (FGG) tiles from AUG's divertor. It is proved that the method is able to provide information about the uniformity of the tungsten coating on a graphite or CFC substrate whilst the technique can be used to determine the thickness of the tungsten and other marker materials coatings. It represents a unique instrument for the post-mortem analysis of the coatings.
    Original languageEnglish
    Pages (from-to)S192-S197
    JournalSurface and Coatings Technology
    Volume205
    Issue numberSuppl. 2
    DOIs
    Publication statusPublished - 2011
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Tungsten
    microbeams
    tungsten
    Carbon
    Fluorescence
    X rays
    fluorescence
    carbon
    tiles
    Tile
    x rays
    coatings
    chlorofluorocarbons
    Coatings
    Chlorofluorocarbons
    Graphite
    markers
    erosion
    Erosion
    graphite

    Keywords

    • Tungsten
    • erosion
    • X-ray fluorescence
    • microtomography
    • ASDEX
    • JET

    Cite this

    Tiseanu, I. ; Mayer, M. ; Craciunescu, T. ; Hakola, Antti ; Koivuranta, Seppo ; Likonen, Jari ; Ruset, C. ; Dobrea, C. ; ASDEX Upgrade Team. / X-ray microbeam transmission/fluorescence method for non-destructive characterization of tungsten coated carbon materials. In: Surface and Coatings Technology. 2011 ; Vol. 205, No. Suppl. 2. pp. S192-S197.
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    abstract = "Tungsten erosion, its subsequent transport and redeposition are of great interest, because a full tungsten divertor is foreseen to be used during the deuterium-tritium operational phase of ITER. The erosion of tungsten and carbon marker layers was extensively studied in the outer divertor of ASDEX Upgrade (AUG), and work is currently in progress to completely replace the existing JET CFC tiles with tungsten-coated tiles within the JET ITER-like wall project. The need for fast and non-destructive method which allows the quantitative determination of the thickness of a tungsten coating on a carbon material on large areas led us to evaluate a combined absorption/fluorescence X-ray (XRTF) technique. The method can provide fast analysis, high spatial resolution and a material selective detection of deposited layers and inclusions. It was applied on W coated fine grain graphite (FGG) tiles from AUG's divertor. It is proved that the method is able to provide information about the uniformity of the tungsten coating on a graphite or CFC substrate whilst the technique can be used to determine the thickness of the tungsten and other marker materials coatings. It represents a unique instrument for the post-mortem analysis of the coatings.",
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    X-ray microbeam transmission/fluorescence method for non-destructive characterization of tungsten coated carbon materials. / Tiseanu, I. (Corresponding Author); Mayer, M.; Craciunescu, T.; Hakola, Antti; Koivuranta, Seppo; Likonen, Jari; Ruset, C.; Dobrea, C.; ASDEX Upgrade Team.

    In: Surface and Coatings Technology, Vol. 205, No. Suppl. 2, 2011, p. S192-S197.

    Research output: Contribution to journalArticleScientificpeer-review

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    T1 - X-ray microbeam transmission/fluorescence method for non-destructive characterization of tungsten coated carbon materials

    AU - Tiseanu, I.

    AU - Mayer, M.

    AU - Craciunescu, T.

    AU - Hakola, Antti

    AU - Koivuranta, Seppo

    AU - Likonen, Jari

    AU - Ruset, C.

    AU - Dobrea, C.

    AU - ASDEX Upgrade Team

    PY - 2011

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    N2 - Tungsten erosion, its subsequent transport and redeposition are of great interest, because a full tungsten divertor is foreseen to be used during the deuterium-tritium operational phase of ITER. The erosion of tungsten and carbon marker layers was extensively studied in the outer divertor of ASDEX Upgrade (AUG), and work is currently in progress to completely replace the existing JET CFC tiles with tungsten-coated tiles within the JET ITER-like wall project. The need for fast and non-destructive method which allows the quantitative determination of the thickness of a tungsten coating on a carbon material on large areas led us to evaluate a combined absorption/fluorescence X-ray (XRTF) technique. The method can provide fast analysis, high spatial resolution and a material selective detection of deposited layers and inclusions. It was applied on W coated fine grain graphite (FGG) tiles from AUG's divertor. It is proved that the method is able to provide information about the uniformity of the tungsten coating on a graphite or CFC substrate whilst the technique can be used to determine the thickness of the tungsten and other marker materials coatings. It represents a unique instrument for the post-mortem analysis of the coatings.

    AB - Tungsten erosion, its subsequent transport and redeposition are of great interest, because a full tungsten divertor is foreseen to be used during the deuterium-tritium operational phase of ITER. The erosion of tungsten and carbon marker layers was extensively studied in the outer divertor of ASDEX Upgrade (AUG), and work is currently in progress to completely replace the existing JET CFC tiles with tungsten-coated tiles within the JET ITER-like wall project. The need for fast and non-destructive method which allows the quantitative determination of the thickness of a tungsten coating on a carbon material on large areas led us to evaluate a combined absorption/fluorescence X-ray (XRTF) technique. The method can provide fast analysis, high spatial resolution and a material selective detection of deposited layers and inclusions. It was applied on W coated fine grain graphite (FGG) tiles from AUG's divertor. It is proved that the method is able to provide information about the uniformity of the tungsten coating on a graphite or CFC substrate whilst the technique can be used to determine the thickness of the tungsten and other marker materials coatings. It represents a unique instrument for the post-mortem analysis of the coatings.

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    KW - microtomography

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