Effects of Si and Nb on oxidation behavior in high purity ferritic stainless steels

Yasushi Kato, Masatoshi Ito, Osamu Furukimi

    研究成果: Chapter in Book/Report/Conference proceedingConference contribution

    抄録

    The effects of Si and Nb on the oxidation behavior at 1073 K in high purity 17Cr steels were investigated in conjunction with the Laves phase. In the early stage of oxidation, mass gains increased not only slightly with Nb addition but also further with the addition of Si and Nb, and precipitation of the Laves phase occurred for a short time with Nb addition and was promoted with Si addition. The increase in mass gain in the early stage of oxidation was seemingly caused by the oxidation of the Laves phase near the surface of steel. The parabolic growth rate constant became small for long-term oxidation with Nb addition in spite of Si addition. The reason for this appeared to be that the Laves phase, which had already precipitated at grain boundaries, suppressed the grain boundary diffusion of cations in steel.

    本文言語英語
    ホスト出版物のタイトル65th ABM International Congress, 18th IFHTSE Congress and 1st TMS/ABM International Materials Congress 2010
    ページ4298-4305
    ページ数8
    出版ステータス出版済み - 12 1 2010
    イベント65th ABM International Congress, 18th IFHTSE Congress and 1st TMS/ABM International Materials Congress 2010 - Rio de Janeiro, ブラジル
    継続期間: 7 26 20107 30 2010

    出版物シリーズ

    名前65th ABM International Congress, 18th IFHTSE Congress and 1st TMS/ABM International Materials Congress 2010
    5

    その他

    その他65th ABM International Congress, 18th IFHTSE Congress and 1st TMS/ABM International Materials Congress 2010
    国/地域ブラジル
    CityRio de Janeiro
    Period7/26/107/30/10

    All Science Journal Classification (ASJC) codes

    • 材料力学

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