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| Monitoring Method of Carbon Steel Atmosphere Corrosion Behavior Based on Elec-trochemical Noise Technology |
| Received:July 01, 2017 Revised:September 15, 2017 |
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| DOI：10.7643/ issn.1672-9242.2017.09.014 |
| KeyWord:electrochemical noise time-domain spectrogram power spectral density |
| Author | Institution |
| HU Huan-huan |
Guangdong Ocean University, Zhanjiang , China |
| DENG Pei-chang |
Guangdong Ocean University, Zhanjiang , China |
| HU Jie-zhen |
Guangdong Ocean University, Zhanjiang , China |
| WANG Gui |
Guangdong Ocean University, Zhanjiang , China |
| LI Zu-huan |
Guangdong Ocean University, Zhanjiang , China |
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| Abstract: |
| Objective Based on electrochemical noise technology, the corrosion behavior monitoring system of Q235 carbon steel was constructed to monitor the corrosion process of Q235 carbon steel in the marine atmosphere. Methods The electrochemical noise data collected was analyzed by time-domain spectrogram and frequency domain spectrogram. Results In the stage of 0.5 h-2.0 h (sunny), the current noise amplitude was small; the time-domain spectra appeared a few transient peaks; white noise didn’t appear on frequency spectra; the electrode was in state of passivation; from 46 h to 47.5 h (rainy), the current fluctuated and the noise spectra appeared a large number of transient peaks; the slope of the PSD declined fast; the electrode surface was eroded; the electrode was in the steady pitting corrosion period. Conclusion The monitoring system could continuously monitor corrosion behaviors of Q235 carbon steel in the marine atmosphere. |
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