Electrochemical Characteristics of Al-Based Coating on Magnesium Alloy Fabricated by Supersonic Particles Deposition

Abstract:

Al-based coating on ZM5 magnesium alloy was prepared by Supersonic Particles Deposition (SPD). Electrochemical working station was utilized to test polarization curve, corrosion potential and electrochemical impedance spectroscopy etc. The results indicted that corrosion potential of Al-Si coating was about-767.6mV, much higher than that of ZM5 Mg-substrate; And corrosion current density of the coating sample decreased three order of magnitude than that of the uncoated. Compared to Mg-substrate, the radius of capacitive impedance arc of the coating enlarged and impedance modulus improved two order of magnitude.

• Periodical: Advanced Materials Research (Volumes 756-759)
• Pages: 85-88
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.756-759.85
• Online since: September 2013
• Authors: Xiao Ming Wang, Sheng Zhu, Qing Chang, Guo Feng Han
• Keywords: Electrochemical Characteristics, Magnesium Alloy, Supersonic Particles Deposition

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