Journal
APPLIED SURFACE SCIENCE
Volume 357, Issue -, Pages 2004-2012Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2015.09.172
Keywords
Zinc alloy coatings; Alloy elements; Rare earth metals; Intergranular corrosion
Categories
Funding
- Natural Science Foundation of Shenyang City [F12-277-1-55]
- Program for Excellent Talents in Liaoning Province [LJQ2012021]
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The effects of Si and RE on the microstructure and corrosion resistance of Zn-6Al-3Mg coating (ZAM) have been investigated. Surface morphology observations of the coating and corrosion products reveal that the additions of Si and rare earth metals (RES) improve the microstructural homogeneity of ZAMSR coating and stability of corrosion products formed on ZAMSR coating. Moreover, only uniform corrosion occurs in ZAMSR coating during the corrosion test, while intergranular corrosion and pitting occur in ZAM. As a result, the corrosion resistance of ZAM coating is improved by the additions of Si and RES. (C) 2015 Elsevier B.V. All rights reserved.
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