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Journal of Materials Science

, Volume 42, Issue 12, pp 4435–4440 | Cite as

Effect of neodymium on microstructure and corrosion resistance of AZ91 magnesium alloy

  • Y. L. Song
  • Yao Hui LiuEmail author
  • S. R. Yu
  • X. Y. Zhu
  • S. H. Wang
Article
First Online:

Abstract

The corrosion behavior of a new Mg–9Al–1Zn (AZ91) magnesium alloy containing neodymium (Nd) is investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), immersion tests and electrochemical experiments. The results indicate that Nd decreases the size and volume fraction of the β (Mg17Al12) phase and forms Al2Nd in the alloy. In addition, during corrosion, Nd is incorporated into corrosion film in the form of Nd2O3. AZ91 alloy containing 1.0 wt.% Nd possesses an outstanding passivation property and excellent corrosion resistance. The corrosion resistance enhancement is attributed to the reduction in the size and volume fraction of the β phase and the incorporation of Nd2O3 in the corrosion film.

Keywords

Corrosion Resistance Corrosion Rate Magnesium Alloy Nd2O3 AZ91 Alloy 
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Notes

Acknowledgements

This work was supported by The Program of Science and Technology Development in Jilin Province (No. 20040315) and “985 project” of Jilin University.

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Y. L. Song
    • 1
  • Yao Hui Liu
    • 1
    Email author
  • S. R. Yu
    • 1
  • X. Y. Zhu
    • 1
  • S. H. Wang
    • 1
  1. 1.Key Laboratory of Automobile Materials of Ministry of Education and Department of Materials Science & EngineeringJilin UniversityChangchunPR China

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