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| Cause Analysis for Corrosion of Carbon Steel Pipe in Bilge Water of a Certain Ship |
| Received:April 01, 2016 Revised:August 15, 2016 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/ issn.1672-9242.2016.04.006 |
| KeyWord:steel pipe corrosion electrochemistry |
| Author | Institution |
| ZHANG Bo |
1.Qingdao Research Institute for Marine Corrosion, Central Iron and Steel Research Institute, Qingdao , China;2.Qingdao NCS Testing Protection Technology Co. Ltd, Qingdao , China |
| DONG Cai-chang |
1.Qingdao Research Institute for Marine Corrosion, Central Iron and Steel Research Institute, Qingdao , China;2.Qingdao NCS Testing Protection Technology Co. Ltd, Qingdao , China |
| WU Heng |
1.Qingdao Research Institute for Marine Corrosion, Central Iron and Steel Research Institute, Qingdao , China;2.Qingdao NCS Testing Protection Technology Co. Ltd, Qingdao , China |
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| Abstract: |
| Objective To investigate the corrosion of No.20 carbon steel in seawater and sewage in tanks. Methods The corrosion reason was investigated by immersion corrosion test, galvanic corrosion test, electrochemical test and corrosion morphology analysis. Results The corrosion data of No.20 carbon steel in seawater and sewage were obtained, including corrosion rate, corrosion potential, polarization curves, impedance spectroscopy and corrosion morphology. Conclusion The results indicated that the corrosion of embedded pipe was largely due to seawater inside the pipe, influence of welding on embedded pipe and sewage outside pipe, and the corrosion caused by seawater inside the pipe was a major factor. |
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