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Electrochemical corrosion behavior of cast Mg–Al–RE–Mn Alloys in NaCl solution

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Abstract

The electrochemical corrosion behavior of Mg–6Al–0.4Mn and Mg–6Al–4RE–0.4Mn (RE = Mischmetal) alloys is investigated in 3.5% NaCl solution. The results of corrosion process, polarization behavior, and electrochemical impedance spectroscopy of the alloys reveal that Mg–6Al–4RE–0.4Mn exhibits enhanced corrosion resistance. The addition of RE stabilizes the solid solution and modifies the passive film through a finer microstructure.

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Acknowledgement

This work is supported by Chinese Academy of Science for Distinguished Talents Program, and The Science Program of the Promotes Northeast of CAS (KGCX2-SW-216, DBZX-1-001) and Science and Technology Program of Changchun (05GG54).

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Authors and Affiliations

  1. Key Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China

    Ning Liu, Jianli Wang, Yaoming Wu & Limin Wang

  2. Graduate School of the Chinese Academy of Sciences, Beijing, 100049, China

    Ning Liu & Jianli Wang

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  1. Ning Liu
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  2. Jianli Wang
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  3. Yaoming Wu
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  4. Limin Wang
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Correspondence to Limin Wang.

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Liu, N., Wang, J., Wu, Y. et al. Electrochemical corrosion behavior of cast Mg–Al–RE–Mn Alloys in NaCl solution. J Mater Sci 43, 2550–2554 (2008). https://doi.org/10.1007/s10853-008-2447-y

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  • DOI: https://doi.org/10.1007/s10853-008-2447-y

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