Dissolution Behavior of Duplex Stainless Steels in Crevice Corrosion Growth Step

So Aoki, Yushi Nada, Jun'Ichi Sakai

    研究成果: Article

    1 引用 (Scopus)

    抄録

    The objective of this study is to clarify dissolution behavior of duplex stainless steels in crevice corrosion growth step. Crevice corrosion grew on the duplex stainless steels by holding potential at various values. After a certain period, dissolution behavior of the crevice corrosion was analyzed based on observation of corroded area. Change in crevice corrosion dissolution behavior with time was also investigated by means of in-situ observation. Four types of dissolution regions could be observed in the corrosion area from outside toward inside direction, i.e., tip of the corroded area toward initiation point, in a crevice; they were passive region, the preferential dissolution region of γ phase, α phase and γ phase dissolution region, and the preferential dissolution region of α phase. The crevice corrosion which maintained that four dissolution regions grew toward the edge of the crevice. This dissolution behavior was given at all the potential where crevice corrosion occurred.

    元の言語English
    ページ(範囲)366-372
    ページ数7
    ジャーナルZairyo to Kankyo/ Corrosion Engineering
    64
    発行部数8
    出版物ステータスPublished - 2015

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    Stainless Steel
    Dissolution
    Stainless steel
    Corrosion

    ASJC Scopus subject areas

    • Electrochemistry
    • Materials Chemistry
    • Metals and Alloys
    • Surfaces, Coatings and Films

    これを引用

    Dissolution Behavior of Duplex Stainless Steels in Crevice Corrosion Growth Step. / Aoki, So; Nada, Yushi; Sakai, Jun'Ichi.

    :: Zairyo to Kankyo/ Corrosion Engineering, 巻 64, 番号 8, 2015, p. 366-372.

    研究成果: Article

    Aoki, So ; Nada, Yushi ; Sakai, Jun'Ichi. / Dissolution Behavior of Duplex Stainless Steels in Crevice Corrosion Growth Step. :: Zairyo to Kankyo/ Corrosion Engineering. 2015 ; 巻 64, 番号 8. pp. 366-372.
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    N2 - The objective of this study is to clarify dissolution behavior of duplex stainless steels in crevice corrosion growth step. Crevice corrosion grew on the duplex stainless steels by holding potential at various values. After a certain period, dissolution behavior of the crevice corrosion was analyzed based on observation of corroded area. Change in crevice corrosion dissolution behavior with time was also investigated by means of in-situ observation. Four types of dissolution regions could be observed in the corrosion area from outside toward inside direction, i.e., tip of the corroded area toward initiation point, in a crevice; they were passive region, the preferential dissolution region of γ phase, α phase and γ phase dissolution region, and the preferential dissolution region of α phase. The crevice corrosion which maintained that four dissolution regions grew toward the edge of the crevice. This dissolution behavior was given at all the potential where crevice corrosion occurred.

    AB - The objective of this study is to clarify dissolution behavior of duplex stainless steels in crevice corrosion growth step. Crevice corrosion grew on the duplex stainless steels by holding potential at various values. After a certain period, dissolution behavior of the crevice corrosion was analyzed based on observation of corroded area. Change in crevice corrosion dissolution behavior with time was also investigated by means of in-situ observation. Four types of dissolution regions could be observed in the corrosion area from outside toward inside direction, i.e., tip of the corroded area toward initiation point, in a crevice; they were passive region, the preferential dissolution region of γ phase, α phase and γ phase dissolution region, and the preferential dissolution region of α phase. The crevice corrosion which maintained that four dissolution regions grew toward the edge of the crevice. This dissolution behavior was given at all the potential where crevice corrosion occurred.

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