Parametric Study of the Corrosion of API-5L-X65 QT Steel Using Potentiostat Based Measurements in a Flow Loop
Low-carbon steel is widely used in industrial pipelines, and corrosion studies are focused mostly on erosion-corrosion, its prediction and control. In this paper, the corrosion rate in pipelines is modeled using a flow loop and measured by linear polarization resistance method (LPR) using a 3-electr...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-01-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/1/444 |
| _version_ | 1797542305270333440 |
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| author | Arjun Ravikumar Paul Rostron Nader Vahdati Oleg Shiryayev |
| author_facet | Arjun Ravikumar Paul Rostron Nader Vahdati Oleg Shiryayev |
| author_sort | Arjun Ravikumar |
| collection | DOAJ |
| description | Low-carbon steel is widely used in industrial pipelines, and corrosion studies are focused mostly on erosion-corrosion, its prediction and control. In this paper, the corrosion rate in pipelines is modeled using a flow loop and measured by linear polarization resistance method (LPR) using a 3-electrode corrosion setup for API-5L-X65 QT steel. Optical microscopy and SEM studies are conducted to examine the surface of the sample and the corrosion products. The effect of NaCl concentration on the corrosion rate is studied at different pH, temperature range, and flow velocities with dissolved oxygen content in the solution maintained at 6 mg/L (6ppm). The corrosion rate is found to be varying from 1 mil per year (0.0254 mmyr<sup>−1</sup>) to 10 mils per year (0.254 mmyr<sup>−1</sup>), and the corrosion rate increases with the flow velocity and reaches a maximum at Reynolds Number above 10,000. Further increase in fluid velocity shows corrosion is flow insensitive, and uniform corrosion is predominant in the region. |
| first_indexed | 2024-03-10T13:28:41Z |
| format | Article |
| id | doaj.art-1103c263f6ce4675a8dfb301721bee0d |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T13:28:41Z |
| publishDate | 2021-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-1103c263f6ce4675a8dfb301721bee0d2023-11-21T08:22:13ZengMDPI AGApplied Sciences2076-34172021-01-0111144410.3390/app11010444Parametric Study of the Corrosion of API-5L-X65 QT Steel Using Potentiostat Based Measurements in a Flow LoopArjun Ravikumar0Paul Rostron1Nader Vahdati2Oleg Shiryayev3Department of Mechanical Engineering, Khalifa University of Science and Technology, Abu Dhabi 127788, UAECentre for Defense Chemistry, Cranfield University, Defense Academy of the United Kingdom, Shrivenham SN6 8LA, UKDepartment of Mechanical Engineering, Khalifa University of Science and Technology, Abu Dhabi 127788, UAEDepartment of Mechanical Engineering, University of Alaska, Anchorage, 3310 UAA Drive, ECB 301, Anchorage, AK 99508, USALow-carbon steel is widely used in industrial pipelines, and corrosion studies are focused mostly on erosion-corrosion, its prediction and control. In this paper, the corrosion rate in pipelines is modeled using a flow loop and measured by linear polarization resistance method (LPR) using a 3-electrode corrosion setup for API-5L-X65 QT steel. Optical microscopy and SEM studies are conducted to examine the surface of the sample and the corrosion products. The effect of NaCl concentration on the corrosion rate is studied at different pH, temperature range, and flow velocities with dissolved oxygen content in the solution maintained at 6 mg/L (6ppm). The corrosion rate is found to be varying from 1 mil per year (0.0254 mmyr<sup>−1</sup>) to 10 mils per year (0.254 mmyr<sup>−1</sup>), and the corrosion rate increases with the flow velocity and reaches a maximum at Reynolds Number above 10,000. Further increase in fluid velocity shows corrosion is flow insensitive, and uniform corrosion is predominant in the region.https://www.mdpi.com/2076-3417/11/1/444pipeline corrosionflow looplinear polarization resistancepredictive equation |
| spellingShingle | Arjun Ravikumar Paul Rostron Nader Vahdati Oleg Shiryayev Parametric Study of the Corrosion of API-5L-X65 QT Steel Using Potentiostat Based Measurements in a Flow Loop Applied Sciences pipeline corrosion flow loop linear polarization resistance predictive equation |
| title | Parametric Study of the Corrosion of API-5L-X65 QT Steel Using Potentiostat Based Measurements in a Flow Loop |
| title_full | Parametric Study of the Corrosion of API-5L-X65 QT Steel Using Potentiostat Based Measurements in a Flow Loop |
| title_fullStr | Parametric Study of the Corrosion of API-5L-X65 QT Steel Using Potentiostat Based Measurements in a Flow Loop |
| title_full_unstemmed | Parametric Study of the Corrosion of API-5L-X65 QT Steel Using Potentiostat Based Measurements in a Flow Loop |
| title_short | Parametric Study of the Corrosion of API-5L-X65 QT Steel Using Potentiostat Based Measurements in a Flow Loop |
| title_sort | parametric study of the corrosion of api 5l x65 qt steel using potentiostat based measurements in a flow loop |
| topic | pipeline corrosion flow loop linear polarization resistance predictive equation |
| url | https://www.mdpi.com/2076-3417/11/1/444 |
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