EFFECT OF ALLOY ELEMENTS ON ELECTROCHEMICAL PERFORMANCE OF ALUMINUM SACRIFICIAL ANODE

J Chin Soc Corr Pro

2012, Vol. 32

Issue (2): 127-132 DOI:

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EFFECT OF ALLOY ELEMENTS ON ELECTROCHEMICAL PERFORMANCE OF ALUMINUM SACRIFICIAL ANODE

LI Weili^1,2, YAN Yonggui², CHEN Guang¹, MA Li²

1. Department of Materials Science of Engineering, Nanjing University of Science and Technology, Nanjing 210094
2. State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute, Qingdao 266101

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Abstract Elements such as Mg, Ti, Ga, Mn and Sn were added to the Al-Zn-In based ternary anode in order using alloying method and the aluminum sacrificial anodes with different incorporated elements were cast. The electrochemical performance test, polarization plots and scanning electron microscope technique were carried out to analyze the influence of several familiar elements to the performance of the aluminum anode. The experiment results indicated that with the increase of the adding element the anode electrochemical performance was improved. When the elements of Mg and Ti were added to Al-Zn-In ternary anode the dissolution morphology was more uniform. When Ga and Sn were added, the anode open-circuit potential and closed-circuit potential were more negative. When Mn was added, the current efficiency was promoted.

Key words: alloying elements dissolution morphology current efficiency potential

Received: 30 November 2010

ZTFLH:

TG146.21

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LI Weili, YAN Yonggui, CHEN Guang, MA Li. EFFECT OF ALLOY ELEMENTS ON ELECTROCHEMICAL PERFORMANCE OF ALUMINUM SACRIFICIAL ANODE. J Chin Soc Corr Pro, 2012, 32(2): 127-132.

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2012/V32/I2/127

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