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| Comparison of Self-discharge Behavior of Sacrificial Anodes under Wet-dry Cycling Conditions |
| Received:March 07, 2012 Revised:August 15, 2012 |
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| DOI： |
| KeyWord:sacrificial anodes anti-corrosion wet-dry cycling conditions electrochemical properties |
| Author | Institution |
| FANG Zhi-gang |
Navy Academy of Armament，Beijing ，China |
| LIU Bin |
Navy Academy of Armament，Beijing ，China |
| WANG Tao |
Navy Academy of Armament，Beijing ，China |
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| Abstract: |
| The self-discharge behaviors of four sacrificial anodes commonly used in seagoing ships were investigated under seawater and air alternative wet-dry cycling conditions. Working potential, electric current, solubility, and dissolved products were measured, and the electrochemical properties, especially the reactivation property, of four sacrificial anodes after different wet-dry cycles were analyzed. The results indicated that the electrochemical property of Zn-Al-Cd anode decreases more than others and Al-Zn-In-Cd anode the second worse. Both of these anodes were all not suitable for use in wet-dry cycling environment. Al-Zn-In-Mg-Ti anode has better electrochemical property and Al-Zn-In-Mg-Ga-Mn anode is the most suitable sacrificial anode for cathodic protection under wet-dry cycling conditions. |
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