Journal
CORROSION SCIENCE
Volume 104, Issue -, Pages 217-226Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2015.12.014
Keywords
Metal coatings; Magnesium; Weight loss; EIS
Funding
- National Natural Science Foundation of China [51471103, 51474141]
- China Postdoctoral Science Foundation [2014M551378]
- Baotou Science and Technology Bureau Intellectual Property [2013Z1017]
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The effects of alloyed magnesium on the corrosion behavior of hot-dip Al-Zn-Si-xMg (x=0, 1.25, 3 and 4wt.%) coatings were investigated by analysis of the phase composition, long-term immersion test and electrochemical measurements. Mg2Si phase appeared in the Al-Zn-Si-1.25Mg and Al-Zn-Si-3 Mg coatings but only MgZn2 phase existed on the surface of Al-Zn-Si-4Mg coating. The alloyed magnesium improves the corrosion resistance of the Mg-containing coatings and the Al-Zn-Si-3Mg coating shows the highest protective properties in the investigation. (C) 2015 Elsevier Ltd. All rights reserved.
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