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Structural and Corrosion Study of Uncoated and Zn-Cu Coated Magnesium-Based Alloy

Metallurgical and Materials Science Engineering Department, Gaziantep University, Gaziantep 27310, Turkey
Department of Engineering Physics, Gaziantep University, Gaziantep 27310, Turkey
Author to whom correspondence should be addressed.
Academic Editors: Adem Kurt, Necip Fazil Yilmaz and Halil Ibrahim Kurt
Metals 2016, 6(12), 322;
Received: 31 October 2016 / Revised: 29 November 2016 / Accepted: 14 December 2016 / Published: 19 December 2016
(This article belongs to the Special Issue Selected Papers from ICWET16)
PDF [2223 KB, uploaded 19 December 2016]


Zn-Cu alloy was deposited onto AZ63 substrate, and the corrosion behaviour of resulting modified electrodes was investigated in 3 wt % NaCl solution in comparison with uncoated AZ63. Electrochemical, structural, and morphological study of the coating is presented. SEM images reveal that the surface morphology of the films is uniformly small spherical grain distributions. The XRD patterns illustrate polycrystalline structure and the formation of peaks corresponding to hexagonal close-packed ε-phase of Zn-Cu with various crystallographic orientations. Cyclic voltammetry was used to determine the potential ranges where the various redox processes occur. Linear sweep voltammetry results illustrate that longer exposure of uncoated AZ63 in NaCl solution produces a greater corrosion potential shift because of the formation of an oxide layer that did not prevent the progression of corrosion attack. The corrosion resistivity of Zn-Cu coated AZ63 is approximately two orders of magnitude greater than that of uncoated AZ63. View Full-Text
Keywords: magnesium alloys; brass; electrodeposition; XRD; SEM; corrosion magnesium alloys; brass; electrodeposition; XRD; SEM; corrosion

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Hacıibrahimoğlu, M.Y.; Bedir, M.; Yavuz, A. Structural and Corrosion Study of Uncoated and Zn-Cu Coated Magnesium-Based Alloy. Metals 2016, 6, 322.

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