Depth profile of chemical states of alloying elements in oxide layer of Zr-based alloys

K. Sakamoto, K. Une, M. Aomi, Kenichi Hashizume

    研究成果: Contribution to journalArticle査読

    10 被引用数 (Scopus)

    抄録

    To understand the basic oxidation kinetics of alloying elements which is considered to be strongly related with the corrosion and hydrogen pickup, the depth profiles of chemical states of alloying elements (Cr and Fe) were measured in the oxide layer of Zr-0.5Sn-1.0Cr-0.5Fe alloys. The depth profiles were obtained by combinations of a surface-sensitive XANES and an extremely low energy Ar ion sputtering. The XANES measurements revealed that the chemical states of alloying elements (Fe and Cr) varied with the depth in the oxide layer. Especially in the oxide layer formed in steam, a decrease of the fractions of oxidation states was significant rather than that in LiOH solution. In the oxide layer formed in steam, the oxidation rate of chromium was faster than iron by a factor of approximately 2.

    本文言語英語
    ページ(範囲)101-105
    ページ数5
    ジャーナルProgress in Nuclear Energy
    57
    DOI
    出版ステータス出版済み - 5 1 2012

    All Science Journal Classification (ASJC) codes

    • 原子力エネルギーおよび原子力工学
    • 安全性、リスク、信頼性、品質管理
    • エネルギー工学および電力技術
    • 廃棄物管理と処理

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