Paper Title:
An EIS Study of the Corrosion Behavior of Arc Spraying Al-RE Coating in Salt Spray Test
  Abstract

The corrosion behavior of Al-RE coating in copper accelerated acetic acid salt spray test (CASS) was studied by electrochemical impedance spectroscopy (EIS). Typical EIS spectral changes were clearly observed during the CASS process. The EIS was shown to be a very useful tool for studying corrosion resistance mechanism. Scanning electron microscope and X-ray energy dispersive spectroscopy were used to analyze the microstructure of Al-RE coatings before and after CASS test. The results revealed that the corrosion behavior of Al-RE coating could be divided into two different stages. In the first stage of CASS, there were two capacitive impedance semicircles in the complex plane plots. The high frequency semicircle responded to barrier layer, the low frequency semicircle responded to the electrochemical reaction of Al-RE coating. In the second stage of CASS, porous layer began to influence the electrochemical behavior.

  Info
Periodical
Advanced Materials Research (Volumes 236-238)
Edited by
Zhong Cao, Yinghe He, Lixian Sun and Xueqiang Cao
Pages
1645-1648
DOI
10.4028/www.scientific.net/AMR.236-238.1645
Citation
Y. Liu, S. C. Wei, Y. J. Wang, B. S. Xu, "An EIS Study of the Corrosion Behavior of Arc Spraying Al-RE Coating in Salt Spray Test", Advanced Materials Research, Vols. 236-238, pp. 1645-1648, 2011
Online since
May 2011
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Price
$32.00
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