Effect of Nano Zirconia on Microstructure and Electrochemical Behavior of Aluminium-Zinc Sacrificial Anodes

Abstract:

In this study, nano ZrO₂ powders were incorporated into Al-5 wt% Zn sacrificial anode and the effect of ZrO₂ contents (wt% =0.1, 0.2) on microstructures and electrochemical properties were investigated. The results show that the addition of nano ZrO₂ was effective on improving metallurgical and electrochemical properties. With the increase of ZrO₂ content, the dendritic structure is fined gradually and the corrosion current density values is also increased. The incorporation of ZrO₂ also can result in a moderate efficiency value. When the ZrO₂ content in the alloy was 0.2 wt%, the optimal microstructure, electrochemical properties and as high as 70% the efficiency value was obtained.

• Periodical: Key Engineering Materials (Volume 519)
• Pages: 41-44
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.519.41
• Online since: July 2012
• Authors: Ying Zhang, Ai Chen, Cheng Liu, Hai Rong Wang, Ze Song Li
• Keywords: Electrochemical Property, Zinc-Aluminum Alloy, Zirconia

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