| LIN Cui,ZHAO Qing,DU Nan,ZHANG San-ping,FENG Chang-jie.Corrosion Measurement of Carbon Steel in Simulated Concrete Solution[J],39(3):44-47 |
| Corrosion Measurement of Carbon Steel in Simulated Concrete Solution |
| Revised:June 10, 2010 |
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| DOI： |
| KeyWord:carbon steel simulated concrete solution corrosion depth electrochemical behavior |
| Author | Institution |
| LIN Cui |
National Defence Key Discipline Laboratory of Light Alloy Processing Science and Technology,Nanchang Hangkong University, Nanchang , China |
| ZHAO Qing |
National Defence Key Discipline Laboratory of Light Alloy Processing Science and Technology,Nanchang Hangkong University, Nanchang , China |
| DU Nan |
National Defence Key Discipline Laboratory of Light Alloy Processing Science and Technology,Nanchang Hangkong University, Nanchang , China |
| ZHANG San-ping |
Wuhan Research Institute of Materials Protection, Wuhan , China |
| FENG Chang-jie |
National Defence Key Discipline Laboratory of Light Alloy Processing Science and Technology,Nanchang Hangkong University, Nanchang , China |
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| Abstract: |
| The corrosion depth of carbon steel in simulated concrete solution was analyzed by mass loss, resistance and sheet resistance measurement, and electrochemical characteristics were discussed via potentiodynamic polarization, electrochemical impedance spectroscopy. Within the range of 0.08 mm, the maximum differences of corrosion depth of resistance and sheet resistance measurement were respectively 6.3μm and 0.98μm compared with the result of mass loss. The measurement of resistance and sheet resistance methods were consistent with that of mass loss. Initially passive characteristic was observed in the polarization curve and the electrochemical impedance spectroscopy was a single capacitive reactance arc, which indicated a layer of passive film on the surface of carbon steel. With the extension of time, passive state changed into active corrosion. Passive film on the surface of carbon steel broke down and corrosion proceeded. |
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