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| Applicability of Atmospheric Corrosion Rate Prediction Equation for Carbon Steel of Standard ISO 9223—2012 in Typical Areas of China |
| Received:June 01, 2017 Revised:October 15, 2017 |
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| DOI：10.7643/issn.1672-9242.2017.10.014 |
| KeyWord:carbon steel prediction equation of atmospheric corrosion rate applicability. |
| Author | Institution |
| LIU Cong |
Southwest Technology and Engineering Research Institute, Chongqing , China |
| TANG Qi-huan |
Southwest Technology and Engineering Research Institute, Chongqing , China |
| WANG Wan |
Southwest Technology and Engineering Research Institute, Chongqing , China |
| GUO Zan-hong |
Southwest Technology and Engineering Research Institute, Chongqing , China |
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| Abstract: |
| Objective To verify the applicability of the prediction equation for atmospheric corrosion rate of carbon steel in ISO 9223—2012. Methods Based on the atmospheric corrosion data of environmental data of carbon steel in typical coastal areas, saline areas and industrial polluted areas in China, the difference between predicted and measured values of atmospheric corrosion rate of carbon steel was analyzed to verify the applicability of the prediction equation for atmospheric corrosion rate of carbon steel in ISO 9223—2012 in China. Results According to the prediction equation for atmospheric corrosion rate of carbon steel in ISO 9223—2012, temperature, relative humidity, SO2 deposition and Cl-deposition of four environmental factors data were used to predict the atmospheric corrosion of carbon steel. The prediction effect in 12 typical areas in China was good. R2 reached 0.90, and the corrosion grade divided according to the predicted value was consistent with the measured value. Conclusion The atmospheric corrosion rate prediction equation for carbon steel in ISO 9223—2012 is applicable to the atmospheric environment in China. The data of chloride deposition rate in the prediction equation can be obtained by the dry plate method. |
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