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Open AccessArticle

Corrosion Behavior of Fe/Zr Composite Coating on ZK60 Mg Alloy by Ion Implantation and Deposition

1,2, 1, 2,3, 2,3,* and 1,*
1
School of Mechanical Engineering, Hebei University of Technology, Tianjin 300130, China
2
Beijing Key Laboratory for Advanced Functional Materials and Thin Film Technology, Beihang University, Beijing 100191, China
3
School of Materials Science and Engineering, Beihang University, Beijing 100191, China
*
Authors to whom correspondence should be addressed.
Coatings 2018, 8(8), 261; https://doi.org/10.3390/coatings8080261
Received: 4 July 2018 / Revised: 19 July 2018 / Accepted: 25 July 2018 / Published: 26 July 2018
(This article belongs to the Special Issue Advanced Coatings for Corrosion Protection in Extreme Environments)
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Abstract

The Fe/Zr composite coating was prepared by duplex Fe/Zr ion implantation and deposition to modify the microstructure and corrosion behavior of Mg-5.5 Zn-0.6 Zr (in wt.%, ZK60) alloy. The surface and interface characteristics were investigated using X-ray diffraction (XRD), atomic force microscope (AFM) and scanning electron microscopy (SEM). The results showed that the Fe/Zr composite coating exhibited a bi-layer microstructure of outer Fe-rich layer and inner Zr-rich layer. Multi-phases of α-Fe, ZrO0.35 and Zr6Fe3O were formed on the modified surface. The electrochemical measurements and immersion tests revealed an improvement of corrosion behavior for the surface-modified sample due to the protective effect of Fe/Zr composite coating. View Full-Text
Keywords: Mg alloy; ion implantation and deposition; Fe/Zr composite coating; corrosion behavior Mg alloy; ion implantation and deposition; Fe/Zr composite coating; corrosion behavior
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Zheng, Y.; Zang, L.; Bi, Y.; Li, Y.; Chen, Y. Corrosion Behavior of Fe/Zr Composite Coating on ZK60 Mg Alloy by Ion Implantation and Deposition. Coatings 2018, 8, 261.

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