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Anomalous Behavior of the Internal Oxidation of Dilute Cu–Ni Alloys Under 1 atm. O2 at 900 °C

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Abstract

The internal oxidation of Ni in dilute Cu–Ni alloys exposed to 1 atm. O2 at 900 °C, and thus in the presence of external CuOx scales, is absent for Ni levels below a critical value, extremely close to that required for the simultaneous equilibrium between the alloy and the oxides of the two components. For Ni contents not largely exceeding this limit the internal oxidation of Ni deviates from the classical behavior described by Wagner, approaching that predicted by Morral et al. for the precipitation of compounds with limited thermodynamic stability.

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Acknowledgments

A financial support by the National Natural Scientific Foundation of China (NSFC) under the research project No. 50971129 is gratefully acknowledged.

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Authors and Affiliations

  1. State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Wencui Road 62, 110016, Shenyang, China

    L. Y. Lu & Y. Niu

  2. China Securities Company Limited, Chaonei Street 188, Beijing, China

    S. Wang

  3. DICHEP, University of Genova, Fiera del Mare, Pad. D, 16129, Genoa, Italy

    F. Gesmundo

Authors
  1. L. Y. Lu
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  2. S. Wang
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  3. F. Gesmundo
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  4. Y. Niu
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Correspondence to Y. Niu.

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Lu, L.Y., Wang, S., Gesmundo, F. et al. Anomalous Behavior of the Internal Oxidation of Dilute Cu–Ni Alloys Under 1 atm. O2 at 900 °C. Oxid Met 75, 297–311 (2011). https://doi.org/10.1007/s11085-011-9232-z

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  • DOI: https://doi.org/10.1007/s11085-011-9232-z

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