Paper Title:
Effects of Ga on the Corrosion Morphology of Al-Zn-Sn-Ga Anode Alloy
  Abstract

The corrosion behaviors of Al-Zn-Sn and Al-Zn-Sn-Ga alloys were investigated according to the results of immersion tests and corrosion morphology observation,and the Fermi energy of the precipitates was calculated by Materials Studio software for discussing the corrosion kinetics of precipitates . The results show that the Al-Zn phase with high Fermi energy (low corrosion potential) dissolved firstly, than caused the forming of Al-Ga amalgam which deposited between passive film and Al matrix. Meanwhile, the Al-Ga phase with higher Fermi energy dissolved too, which made the Al-Zn-Sn-Ga alloy continue to active, Finally, the Al-Zn-Sn-Ga alloy formed uniform corrosion morphology due to the effect of Al-Ga amalgam, while Al-Zn-Sn alloy formed the surface feature with the deep corrosion pits due to the "self-catalysis" mechanism.

  Info
Periodical
Chapter
Chapter 6: New Materials and Advanced Materials
Edited by
Huixuan Zhang, Ye Han, Fuxiao Chen and Jiuba Wen
Pages
1048-1051
DOI
10.4028/www.scientific.net/AMM.117-119.1048
Citation
J. B. Wen, J. F. Li, J. G. He, J. L. Ma, "Effects of Ga on the Corrosion Morphology of Al-Zn-Sn-Ga Anode Alloy", Applied Mechanics and Materials, Vols. 117-119, pp. 1048-1051, 2012
Online since
October 2011
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$32.00
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