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| Corrosion Behaviors of 45# and Q235 Carbon Steel in Different Water Circumstances |
| Received:January 18, 2017 Revised:June 15, 2017 |
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| DOI：10.7643/ issn.1672-9242.2017.06.020 |
| KeyWord:carbon steel corrosion seawater-freshwater alternation specific conductance |
| Author | Institution |
| YANG Bo-jun |
Advanced Material Academy of Luoyang Ship Material Research Institute, Xiamen , China |
| WEI Mu-meng |
Advanced Material Academy of Luoyang Ship Material Research Institute, Xiamen , China |
| YAO Jing-hua |
1.Advanced Material Academy of Luoyang Ship Material Research Institute, Xiamen , China;2.State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute LSMRI, Qingdao , China |
| CHEN Xiang-feng |
1.Advanced Material Academy of Luoyang Ship Material Research Institute, Xiamen , China;2.State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute LSMRI, Qingdao , China |
| REN Run-tao |
1.Advanced Material Academy of Luoyang Ship Material Research Institute, Xiamen , China;2.State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute LSMRI, Qingdao , China |
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| Abstract: |
| Objective To study corrosion behaviors of carbon steel in different water circumstances. Methods Two kinds of typical metals, including 45# and Q235 carbon steel, were exposed in seawater, freshwater and natural environment alternatively between seawater/freshwater for 2 years to compare data on corrosion morphology and corrosion rate. The corrosion rules of 2 kinds of materials in different water circumstances were summarized. The corrosion mechanism was discussed, and the long-term corrosion behaviors were also predicted. Results For 45# steel, influences of brackish water environment was 92% of seawater environment, influences of freshwater environment was 46% of seawater environment; for Q235 steel, influences of brackish water environment was88% of seawater environment; influences of freshwater environment was 53% of seawater environment. Conclusion The corrosion resistance of carbon steel is the poorest in seawater environment, medium in brackish water environment and the best in freshwater environment. |
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