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


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.


Corrosion Resistance Corrosion Rate Magnesium Alloy Nd2O3 AZ91 Alloy 



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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