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Materials 2014, 7(8), 6092-6104; doi:10.3390/ma7086092

Influence of Zeolite Coating on the Corrosion Resistance of AZ91D Magnesium Alloy

1
Departments of Mechanical and Aerospace Engineering, Monash University, Melbourne, VIC 3800, Australia
2
Department of Chemical Engineering, Monash University, Melbourne, VIC 3800, Australia
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Received: 27 June 2014 / Revised: 30 July 2014 / Accepted: 13 August 2014 / Published: 22 August 2014
(This article belongs to the Special Issue Corrosion of Materials)
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Abstract

The protective performance of zeolite coating on AZ91D magnesium alloy was evaluated using potentiodynamic polarisation and electrochemical impedance spectroscopy (EIS) in 0.1 M sodium chloride solution (NaCl). Electrical equivalent circuit (EEC) was developed based upon hypothetical corrosion mechanisms and simulated to correspond to the experimental data. The morphology and the chemical nature of the coating were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD) analysis. Post corrosion morphologies of the zeolite coated and the uncoated AZ91D alloy were investigated using SEM. The corrosion resistance of the zeolite coated specimen was at least one order of magnitude higher than the uncoated specimen. View Full-Text
Keywords: magnesium alloys; zeolite coating; electrochemical impedance spectroscopy; corrosion; AZ91 magnesium alloys; zeolite coating; electrochemical impedance spectroscopy; corrosion; AZ91
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Banerjee, P.C.; Woo, R.P.; Grayson, S.M.; Majumder, A.; Raman, R.K.S. Influence of Zeolite Coating on the Corrosion Resistance of AZ91D Magnesium Alloy. Materials 2014, 7, 6092-6104.

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