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

Materials

P. Chakraborty Banerjee¹  Ren Ping Woo²  Sam Matthew Grayson²  Amrita Majumder² 

[1] Departments of Mechanical and Aerospace Engineering, Monash University, Melbourne, VIC 3800, Australia; E-Mail:;Department of Chemical Engineering, Monash University, Melbourne, VIC 3800, Australia; E-Mails:

关键词: magnesium alloys;    zeolite coating;    electrochemical impedance spectroscopy;    corrosion;    AZ91;   

DOI  :  10.3390/ma7086092

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.