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| Research on AC Interference Corrosion of Buried Pipeline with Cathodic Protection |
| Received:March 07, 2021 Revised:April 09, 2021 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2021.04.001 |
| KeyWord:buried pipeline cathodic protection stray current interference AC corrosion |
| Author | Institution |
| YAN Mao-cheng |
Institute of Metals Research, Chinese Academy of Sciences, National Research Center of Metal Corrosion Control, Shenyang , Liaoning, China |
| SHI Wei |
Guangdong Institute of Corrosion Science and Technology Innovation, Guangzhou , Guangdong, China |
| WANG Bin-bin |
Pipe China Southwest Pipeline Company, Chengdu , Sichuan, China |
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| Abstract: |
| Through the case study of AC corrosion on pipeline with cathodic protection, the interference trend of AC facilities such as AC transmission line on buried pipeline, the characteristics, occurrence conditions and influencing factors of AC corrosion of pipeline with cathodic protection are summarized. The main influence of alternating current on the electrode process and polarization behavior of pipeline steel material activation and passivation system, and the synergistic acceleration of high cathodic protection level on AC corrosion are summarized. This paper systematically describes the latest research progress in the mechanism and evaluation criteria of AC corrosion of pipelines under cathodic protection. The main viewpoints and influencing factors in the mechanism model of AC interference corrosion are discussed, and the problems in cathodic protection technology of pipeline under the condition of AC interference are expounded. |
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