AC-Induced Corrosion of Cathodically Protected Pipelines: Experimental Study and Probabilistic Modeling
This study investigated the effects of alternating current (AC) interference on pipeline steel under cathodic protection (CP). In a simulated solution, real-time electrochemical measurements and corrosion rate analysis were conducted on two steel types (C1018 and X60) under various levels of AC inte...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-06-01
|
| Series: | Corrosion and Materials Degradation |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2624-5558/6/2/26 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1839654406261309440 |
|---|---|
| author | Yuhan Su Emadoddin Majdabadi Farahani Qindan Huang Qixin Zhou |
| author_facet | Yuhan Su Emadoddin Majdabadi Farahani Qindan Huang Qixin Zhou |
| author_sort | Yuhan Su |
| collection | DOAJ |
| description | This study investigated the effects of alternating current (AC) interference on pipeline steel under cathodic protection (CP). In a simulated solution, real-time electrochemical measurements and corrosion rate analysis were conducted on two steel types (C1018 and X60) under various levels of AC interference with CP. Due to the complexity of AC-induced corrosion, relying on the shift in DC potential alone cannot accurately demonstrate the corrosion behavior in the presence of AC interference. In fact, such an approach may mislead the predictions of corrosion performance. It is observed that AC interference reduced the effectiveness of CP and increased the corrosion rate of the steel, both in weight loss and Tafel Extrapolation (Tafel) measurements. The study concluded that conventional CP standards used in the field were inadequate in the presence of high AC-level interference. Furthermore, this study found that a more negative CP current density (−0.75 A/m<sup>2</sup>) could reduce the effect of AC interference by 46–93%. This is particularly shown in the case of low-level AC interference, where the reduction can reach up to 93%. Utilizing the experimental data obtained by the two measurement methods, probabilistic models to predict the corrosion rate were developed with consideration of the uncertainty in the measurements. The sensitivity analysis showed how AC interference impacts the corrosion rate for a given CP level. |
| format | Article |
| id | doaj-art-f4c1d01abe4443b68fc39da6e92c35e3 |
| institution | Matheson Library |
| issn | 2624-5558 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Corrosion and Materials Degradation |
| spelling | doaj-art-f4c1d01abe4443b68fc39da6e92c35e32025-06-25T13:39:17ZengMDPI AGCorrosion and Materials Degradation2624-55582025-06-01622610.3390/cmd6020026AC-Induced Corrosion of Cathodically Protected Pipelines: Experimental Study and Probabilistic ModelingYuhan Su0Emadoddin Majdabadi Farahani1Qindan Huang2Qixin Zhou3Department of Chemical, Biomolecular, and Corrosion Engineering, The University of Akron, Akron, OH 44325, USADepartment of Civil, Construction, and Environmental Engineering, Marquette University, Milwaukee, WI 53233, USADepartment of Civil, Construction, and Environmental Engineering, Marquette University, Milwaukee, WI 53233, USADepartment of Chemical, Biomolecular, and Corrosion Engineering, The University of Akron, Akron, OH 44325, USAThis study investigated the effects of alternating current (AC) interference on pipeline steel under cathodic protection (CP). In a simulated solution, real-time electrochemical measurements and corrosion rate analysis were conducted on two steel types (C1018 and X60) under various levels of AC interference with CP. Due to the complexity of AC-induced corrosion, relying on the shift in DC potential alone cannot accurately demonstrate the corrosion behavior in the presence of AC interference. In fact, such an approach may mislead the predictions of corrosion performance. It is observed that AC interference reduced the effectiveness of CP and increased the corrosion rate of the steel, both in weight loss and Tafel Extrapolation (Tafel) measurements. The study concluded that conventional CP standards used in the field were inadequate in the presence of high AC-level interference. Furthermore, this study found that a more negative CP current density (−0.75 A/m<sup>2</sup>) could reduce the effect of AC interference by 46–93%. This is particularly shown in the case of low-level AC interference, where the reduction can reach up to 93%. Utilizing the experimental data obtained by the two measurement methods, probabilistic models to predict the corrosion rate were developed with consideration of the uncertainty in the measurements. The sensitivity analysis showed how AC interference impacts the corrosion rate for a given CP level.https://www.mdpi.com/2624-5558/6/2/26alternating currentpipeline corrosioncathodic protectionAC interferencepipeline steelsensitivity analysis |
| spellingShingle | Yuhan Su Emadoddin Majdabadi Farahani Qindan Huang Qixin Zhou AC-Induced Corrosion of Cathodically Protected Pipelines: Experimental Study and Probabilistic Modeling Corrosion and Materials Degradation alternating current pipeline corrosion cathodic protection AC interference pipeline steel sensitivity analysis |
| title | AC-Induced Corrosion of Cathodically Protected Pipelines: Experimental Study and Probabilistic Modeling |
| title_full | AC-Induced Corrosion of Cathodically Protected Pipelines: Experimental Study and Probabilistic Modeling |
| title_fullStr | AC-Induced Corrosion of Cathodically Protected Pipelines: Experimental Study and Probabilistic Modeling |
| title_full_unstemmed | AC-Induced Corrosion of Cathodically Protected Pipelines: Experimental Study and Probabilistic Modeling |
| title_short | AC-Induced Corrosion of Cathodically Protected Pipelines: Experimental Study and Probabilistic Modeling |
| title_sort | ac induced corrosion of cathodically protected pipelines experimental study and probabilistic modeling |
| topic | alternating current pipeline corrosion cathodic protection AC interference pipeline steel sensitivity analysis |
| url | https://www.mdpi.com/2624-5558/6/2/26 |
| work_keys_str_mv | AT yuhansu acinducedcorrosionofcathodicallyprotectedpipelinesexperimentalstudyandprobabilisticmodeling AT emadoddinmajdabadifarahani acinducedcorrosionofcathodicallyprotectedpipelinesexperimentalstudyandprobabilisticmodeling AT qindanhuang acinducedcorrosionofcathodicallyprotectedpipelinesexperimentalstudyandprobabilisticmodeling AT qixinzhou acinducedcorrosionofcathodicallyprotectedpipelinesexperimentalstudyandprobabilisticmodeling |