Dissolution behavior of α and γ phases of a duplex stainless steel in a simulated crevice solution

S. Aoki, H. Yakuwa, K. Mitsuhashi, J. Sakai

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    14 Citations (Scopus)

    Abstract

    The purpose of this study is to clarify corrosion mechanism of a duplex stainless steel (DSS) through dissolution behavior of a ferritic phase and austenitic phase, respectively. A single phase specimen ([α] or [γ] phase specimen) which has chemical composition of each phase of a DSS was prepared by preferential dissolution of the DSS, and dissolution behavior of each phase specimen was investigated. The [α] specimen showed a less-noble corrosion potential compared to the [γ] specimen. The change of the corrosion potential of the DSS was located somewhere between those of each phase specimen. The [α] specimen showed a less-noble active peak compared to the [γ] specimen. The current density value of the DSS was located between the current values of each phase specimen. It was clearly shown that the corrosion mechanism of a DSS could be described through the dissolution behavior of single phases such as α phase and γ phase.

    Original languageEnglish
    Title of host publicationECS Transactions
    Pages17-22
    Number of pages6
    Volume25
    Edition37
    DOIs
    Publication statusPublished - 2010
    EventCorrosion General Session - 216th ECS Meeting - Vienna
    Duration: 2009 Oct 42009 Oct 9

    Other

    OtherCorrosion General Session - 216th ECS Meeting
    CityVienna
    Period09/10/409/10/9

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    ASJC Scopus subject areas

    • Engineering(all)

    Cite this

    Aoki, S., Yakuwa, H., Mitsuhashi, K., & Sakai, J. (2010). Dissolution behavior of α and γ phases of a duplex stainless steel in a simulated crevice solution. In ECS Transactions (37 ed., Vol. 25, pp. 17-22) https://doi.org/10.1149/1.3407544