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

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Abstract

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.

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Authors and Affiliations

  1. Institute of Materials Engineering, National Taiwan Ocean University, Keelung, 20224, Taiwan

    Wen-Chi Chiang, Wann-Chiun Luu & Jiann-Kuo Wu

  2. Department of Manufacturing Engineering and Management, Technical University of Denmark, DK-2800 Kgs, Lyngby, Denmark

    Wen-Chi Chiang

Authors
  1. Wen-Chi Chiang
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  2. Wann-Chiun Luu
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  3. Jiann-Kuo Wu
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Correspondence to Jiann-Kuo Wu.

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Chiang, WC., Luu, WC. & Wu, JK. Effect of aluminum content on the passivation behavior of Fe–Al alloys in sulfuric acid solution. J Mater Sci 41, 3041–3044 (2006). https://doi.org/10.1007/s10853-006-6783-5

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  • DOI: https://doi.org/10.1007/s10853-006-6783-5

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