Effects of Fe Content on the Corrosion Behavior of Al-Zn-In-Mg-Ti-Si Sacrificial Anode

Abstract:

The effects of Fe content on the corrosion behavior of Al-Zn-In-Mg-Ti-Si sacrificial anode were investigated by the microstructure observation and electrochemical measurements in order to improve the dissolution feature and electrochemical properties. The results show that the current efficiency of Al-5Zn-0.02In-1Mg-0.05Ti-0.12Si-0.1Fe (wt.%) alloy corroded uniformly reaches 93 % in seawater. It presents the property of lower resistance and higher capacitance. While the Fe content exceeds 0.1 wt.%, the resistance of active dissolution increases gradually. The current efficiency falls down obviously. The results indicate that the electrochemical properties and dissolution feature can be improved significantly by suppressing Fe content under 0.1 wt.% in Al-Zn-In-Mg-Ti-Si alloy.

• Periodical: Applied Mechanics and Materials (Volumes 543-547)
• Pages: 3793-3797
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.543-547.3793
• Online since: March 2014
• Authors: Shu Sen Wang*, Cheng Hao Liang, Nai Bao Huang
• Keywords: Aluminium Alloy, Electrochemical Performance, Fe Impurity, Seawater

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