Change of chemical states of niobium in the oxide layer of zirconium-niobium alloys with oxide growth

Kan Sakamoto, Katsumi Une, Masaki Aomi, Teppei Otsuka, Kenichi Hashizume

    Research output: Contribution to journalArticlepeer-review

    7 Citations (Scopus)

    Abstract

    The change of chemical states of niobium with oxide growth was examined in the oxide layers of Zr-2.5Nb around the first kinetic transition by the conversion electron yield -X-ray absorption near-edge structure measurements. The detailed depth profiles of niobium chemical states were obtained in both the pre-and the post-transition oxide layers of Zr-2.5Nb formed in water at 663 K for 40-280 d. The depth profiling revealed that the inner oxide layer remained protective to oxidizing species even though in the post-transition region and this excellent stability of barrierness would be attributed the suppression of hydrogen pickup.

    Original languageEnglish
    Pages (from-to)1259-1264
    Number of pages6
    Journaljournal of nuclear science and technology
    Volume52
    Issue number10
    DOIs
    Publication statusPublished - Oct 3 2015

    All Science Journal Classification (ASJC) codes

    • Nuclear and High Energy Physics
    • Nuclear Energy and Engineering

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