Paper Title:
Corrosion Properties of Arc Spray Zn-25Al and Zn-50Al Coating in Marine Environment
  Abstract

Zn-25Al and Zn-50Al coatings were prepared by arc spray in mild carbon steel Q235. The corrosion behaviors of these coatings were studied by potentiodynamic polarization test in natural seawater, corrosion potentials and electrochemical impedance spectrum. The results show that the Ecorr of Zn-25Alcoating is -1.025V (SCE) and the Ecorr of Zn-50Al coating is -0.997V (SCE) at the beginning of the immersion. The Ecorr of the Zn-50Al coating is not stable as the Zn-25Al coating. Self-corrosion potential of Zn-25Al coating is lower than Zn-50Al coating. Zn-25Al can provide lower protection potential and promising current to protect the substrate from corrosion than Zn-50Al. The EIS of these two coatings reveal single capacitive loop. The anti-corrosion properties of Zn-25Al coatings are better than that of Zn-50Al coatings.

  Info
Periodical
Advanced Materials Research (Volumes 239-242)
Edited by
Zhong Cao, Xueqiang Cao, Lixian Sun, Yinghe He
Pages
1215-1218
DOI
10.4028/www.scientific.net/AMR.239-242.1215
Citation
Q. J. Zhu, K. Wang, "Corrosion Properties of Arc Spray Zn-25Al and Zn-50Al Coating in Marine Environment", Advanced Materials Research, Vols. 239-242, pp. 1215-1218, 2011
Online since
May 2011
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Price
$32.00
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