Effect of aluminum content on the passivation behavior of Fe-Al alloys in sulfuric acid solution

Wen-Chi Chiang, W.C. Luu, J.K. Wu

    Research output: Contribution to journalJournal articleResearchpeer-review


    The passivation behavior of Fe-Al alloys (3.4, 10.4, 18.7, 19.4, 29.5, and 41.7 at % Al) and Fe-Al alloys (19.5 and 29.0 at % Al) with 5.1 at % Cr addition in 0.1 N H2SO4 is reported in this paper. The behavior has been evaluated by potentiodynamic polarization measurements. The results show the Fe-Al alloys, which the Al content of alloy exceeds 19 at %, have wide passivation regions with low passivation current. However, when the Al content of Fe-Al alloys exceeds this range, the increment of Al content has slight influence on passivation behavior compared with ternary Cr addition.
    Original languageEnglish
    JournalJournal of Materials Science
    Issue number10
    Pages (from-to)3041-3044
    Publication statusPublished - 2006

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