1. Effect of neodymium on microstructure and corrosion resistance of AZ91 magnesium alloy.
- Author
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Song, Y. L., Yao Hui Liu, Yu, S. R., Zhu, X. Y., and Wang, S. H.
- Subjects
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NEODYMIUM , *MAGNESIUM alloys , *X-ray diffraction , *PHOTOELECTRON spectroscopy , *MOLECULAR spectroscopy , *SCANNING electron microscopy - 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. [ABSTRACT FROM AUTHOR]
- Published
- 2007
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