Study of deuterium retention in Be-W coatings with distinct roughness profiles

R. Mateus (Corresponding Author), Antti Hakola, V. Tiron, C. Porosnicu, C.P. Lungu, E. Alves

    Research output: Contribution to journalArticleScientificpeer-review

    3 Citations (Scopus)

    Abstract

    Three batches of pure beryllium (Be), pure tungsten (W) and mixed Be:W (50:50) coatings were deposited by using the thermionic vacuum arc (TVA) technique. Different superficial roughness and morphologies were obtained by adjusting the bias voltages in the substrate holder. The coatings were irradiated afterwards with 15keV 2H+ ions up to a fluence of 5e17ion/cm2 with the purpose to investigate the influence of the roughness parameters on the retention of deuterium in Be-W deposits in the absence of other co-deposited impurities. Current densities lower than 0.2W/cm2 were used to avoid the release of deuterium induced by heating loads. The results of the experiment point to the negligible effect of rugosity on the retention behaviour under energetic ion bombardment.
    Original languageEnglish
    Pages (from-to)464-467
    Number of pages4
    JournalFusion Engineering and Design
    Volume124
    Early online date2017
    DOIs
    Publication statusPublished - 1 Nov 2017
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Beryllium
    Deuterium
    Beryllium deposits
    Surface roughness
    Coatings
    Tungsten
    Ion bombardment
    Bias voltage
    Current density
    Vacuum
    Impurities
    Ions
    Heating
    Substrates
    Experiments

    Keywords

    • beryllium
    • tungsten
    • retention
    • surface morphology

    Cite this

    Mateus, R. ; Hakola, Antti ; Tiron, V. ; Porosnicu, C. ; Lungu, C.P. ; Alves, E. / Study of deuterium retention in Be-W coatings with distinct roughness profiles. In: Fusion Engineering and Design. 2017 ; Vol. 124. pp. 464-467.
    @article{ece469e28d0d4bae99ff649a812b4991,
    title = "Study of deuterium retention in Be-W coatings with distinct roughness profiles",
    abstract = "Three batches of pure beryllium (Be), pure tungsten (W) and mixed Be:W (50:50) coatings were deposited by using the thermionic vacuum arc (TVA) technique. Different superficial roughness and morphologies were obtained by adjusting the bias voltages in the substrate holder. The coatings were irradiated afterwards with 15keV 2H+ ions up to a fluence of 5e17ion/cm2 with the purpose to investigate the influence of the roughness parameters on the retention of deuterium in Be-W deposits in the absence of other co-deposited impurities. Current densities lower than 0.2W/cm2 were used to avoid the release of deuterium induced by heating loads. The results of the experiment point to the negligible effect of rugosity on the retention behaviour under energetic ion bombardment.",
    keywords = "beryllium, tungsten, retention, surface morphology",
    author = "R. Mateus and Antti Hakola and V. Tiron and C. Porosnicu and C.P. Lungu and E. Alves",
    year = "2017",
    month = "11",
    day = "1",
    doi = "10.1016/j.fusengdes.2017.01.018",
    language = "English",
    volume = "124",
    pages = "464--467",
    journal = "Fusion Engineering and Design",
    issn = "0920-3796",
    publisher = "Elsevier",

    }

    Study of deuterium retention in Be-W coatings with distinct roughness profiles. / Mateus, R. (Corresponding Author); Hakola, Antti; Tiron, V.; Porosnicu, C.; Lungu, C.P.; Alves, E.

    In: Fusion Engineering and Design, Vol. 124, 01.11.2017, p. 464-467.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Study of deuterium retention in Be-W coatings with distinct roughness profiles

    AU - Mateus, R.

    AU - Hakola, Antti

    AU - Tiron, V.

    AU - Porosnicu, C.

    AU - Lungu, C.P.

    AU - Alves, E.

    PY - 2017/11/1

    Y1 - 2017/11/1

    N2 - Three batches of pure beryllium (Be), pure tungsten (W) and mixed Be:W (50:50) coatings were deposited by using the thermionic vacuum arc (TVA) technique. Different superficial roughness and morphologies were obtained by adjusting the bias voltages in the substrate holder. The coatings were irradiated afterwards with 15keV 2H+ ions up to a fluence of 5e17ion/cm2 with the purpose to investigate the influence of the roughness parameters on the retention of deuterium in Be-W deposits in the absence of other co-deposited impurities. Current densities lower than 0.2W/cm2 were used to avoid the release of deuterium induced by heating loads. The results of the experiment point to the negligible effect of rugosity on the retention behaviour under energetic ion bombardment.

    AB - Three batches of pure beryllium (Be), pure tungsten (W) and mixed Be:W (50:50) coatings were deposited by using the thermionic vacuum arc (TVA) technique. Different superficial roughness and morphologies were obtained by adjusting the bias voltages in the substrate holder. The coatings were irradiated afterwards with 15keV 2H+ ions up to a fluence of 5e17ion/cm2 with the purpose to investigate the influence of the roughness parameters on the retention of deuterium in Be-W deposits in the absence of other co-deposited impurities. Current densities lower than 0.2W/cm2 were used to avoid the release of deuterium induced by heating loads. The results of the experiment point to the negligible effect of rugosity on the retention behaviour under energetic ion bombardment.

    KW - beryllium

    KW - tungsten

    KW - retention

    KW - surface morphology

    UR - http://www.scopus.com/inward/record.url?scp=85009975894&partnerID=8YFLogxK

    U2 - 10.1016/j.fusengdes.2017.01.018

    DO - 10.1016/j.fusengdes.2017.01.018

    M3 - Article

    VL - 124

    SP - 464

    EP - 467

    JO - Fusion Engineering and Design

    JF - Fusion Engineering and Design

    SN - 0920-3796

    ER -