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Effect of Bismuth on the Microstructure and Corrosion Resistance of Galvanized Coating

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Abstract:

The microstructure of the galvanized coating was investigated using scanning electron microscope equipped with energy dispersive X-ray spectroscope. The immersing and electrochemical corrosion tests were carried out to study the corrosion resistance of the galvanized coating. The addition of Bi in Zn-bath affects remarkably the morphology of the galvanized coating. The thickness of δ + ζ phase layer in the coating reaches the maximum when the content of Bi in Zn-bath is 0.5 wt.%. The corrosion resistance of the galvanized coating declines with the increase of the content of Bi.

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Periodical:

Advanced Materials Research (Volumes 391-392)

Pages:

1183-1188

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.391-392.1183

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Online since:

December 2011

Authors:

Jian Hua Wang, Xing Ming Wang, Chun Mei Liu, Xu Ping Su, Chang Jun Wu, Ya Liu, Hao Tu

Keywords:

Bismuth, Corrosion Resistance, Galvanized Coating, Microstructure

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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