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| Study of 7A04 Aluminum Corrosion Behavior in Alternate Immersion Test |
| Received:June 24, 2010 Revised:February 15, 2011 |
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| DOI： |
| KeyWord:7A04 aluminum alloy corrosion mechanism alternate immersion corrosion test electrochemical impedance spectroscopy |
| Author | Institution |
| CAI Jian-ping |
Beijing Institute of Aeronautical Materials，Beijing ， China |
| FAN Lin |
University of science and technology Beijing，Beijing ，China |
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| Abstract: |
| The corrosion mechanism and behavior of 7A04 aluminum alloys was studied by alternate immersion corrosion test, associated with EIS, SEM examination. The results showed that the corrosion kinetics of 7A04 obey exponential law; the corrosion of 7A04 starts from pitting, and develops to exfoliation corrosion rapidly; EIS of 7A04 consists of three high-intermediate frequency capacitive curves and a low frequency shrinking inductive curve. |
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