Erosion–Corrosion Behavior of Friction Stud Welded Joints of X65 Pipelines in Simulated Seawater under Different Flow Rates
In order to study the complex erosion–corrosion mechanism of friction stud welded joints in seawater, experiments were carried out in the mixed solution of 3 wt% sea sand and 3.5% NaCl at flow rates of 0 m/s, 0.2 m/s, 0.4 m/s, and 0.6 m/s. The effects of corrosion and erosion–corrosion at different...
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MDPI AG
2023-06-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/16/12/4326 |
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| author | Jie Zhao Yuqi Feng Hui Gao Lei Wang Xiaoyu Yang Yanhong Gu |
| author_facet | Jie Zhao Yuqi Feng Hui Gao Lei Wang Xiaoyu Yang Yanhong Gu |
| author_sort | Jie Zhao |
| collection | DOAJ |
| description | In order to study the complex erosion–corrosion mechanism of friction stud welded joints in seawater, experiments were carried out in the mixed solution of 3 wt% sea sand and 3.5% NaCl at flow rates of 0 m/s, 0.2 m/s, 0.4 m/s, and 0.6 m/s. The effects of corrosion and erosion–corrosion at different flow rates on materials were compared. The corrosion resistance of X65 friction stud welded joint was studied by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization (PDP) curves. The corrosion morphology was observed by a scanning electron microscope (SEM), and the corrosion products were analyzed by energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD). The results showed that the corrosion current density decreased first and then increased with the increase in the simulated seawater flow rate, which indicated that the corrosion resistance of the friction stud welded joint increased first and then decreased. The corrosion products are FeOOH (α-FeOOH and γ-FeOOH), and Fe<sub>3</sub>O<sub>4</sub>. According to the experimental results, the erosion–corrosion mechanism of friction stud welded joints in seawater environment was predicted. |
| first_indexed | 2024-03-11T02:12:44Z |
| format | Article |
| id | doaj.art-b8b4b80282b1435dbb47e6fe77b8711e |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T02:12:44Z |
| publishDate | 2023-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-b8b4b80282b1435dbb47e6fe77b8711e2023-11-18T11:24:41ZengMDPI AGMaterials1996-19442023-06-011612432610.3390/ma16124326Erosion–Corrosion Behavior of Friction Stud Welded Joints of X65 Pipelines in Simulated Seawater under Different Flow RatesJie Zhao0Yuqi Feng1Hui Gao2Lei Wang3Xiaoyu Yang4Yanhong Gu5School of Safety Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, ChinaSchool of Mechanical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, ChinaSchool of Mechanical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, ChinaSchool of Mechanical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, ChinaSchool of Mechanical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, ChinaSchool of Mechanical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, ChinaIn order to study the complex erosion–corrosion mechanism of friction stud welded joints in seawater, experiments were carried out in the mixed solution of 3 wt% sea sand and 3.5% NaCl at flow rates of 0 m/s, 0.2 m/s, 0.4 m/s, and 0.6 m/s. The effects of corrosion and erosion–corrosion at different flow rates on materials were compared. The corrosion resistance of X65 friction stud welded joint was studied by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization (PDP) curves. The corrosion morphology was observed by a scanning electron microscope (SEM), and the corrosion products were analyzed by energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD). The results showed that the corrosion current density decreased first and then increased with the increase in the simulated seawater flow rate, which indicated that the corrosion resistance of the friction stud welded joint increased first and then decreased. The corrosion products are FeOOH (α-FeOOH and γ-FeOOH), and Fe<sub>3</sub>O<sub>4</sub>. According to the experimental results, the erosion–corrosion mechanism of friction stud welded joints in seawater environment was predicted.https://www.mdpi.com/1996-1944/16/12/4326erosion–corrosionflow rateX65 pipeline steelfriction stud welded joints |
| spellingShingle | Jie Zhao Yuqi Feng Hui Gao Lei Wang Xiaoyu Yang Yanhong Gu Erosion–Corrosion Behavior of Friction Stud Welded Joints of X65 Pipelines in Simulated Seawater under Different Flow Rates Materials erosion–corrosion flow rate X65 pipeline steel friction stud welded joints |
| title | Erosion–Corrosion Behavior of Friction Stud Welded Joints of X65 Pipelines in Simulated Seawater under Different Flow Rates |
| title_full | Erosion–Corrosion Behavior of Friction Stud Welded Joints of X65 Pipelines in Simulated Seawater under Different Flow Rates |
| title_fullStr | Erosion–Corrosion Behavior of Friction Stud Welded Joints of X65 Pipelines in Simulated Seawater under Different Flow Rates |
| title_full_unstemmed | Erosion–Corrosion Behavior of Friction Stud Welded Joints of X65 Pipelines in Simulated Seawater under Different Flow Rates |
| title_short | Erosion–Corrosion Behavior of Friction Stud Welded Joints of X65 Pipelines in Simulated Seawater under Different Flow Rates |
| title_sort | erosion corrosion behavior of friction stud welded joints of x65 pipelines in simulated seawater under different flow rates |
| topic | erosion–corrosion flow rate X65 pipeline steel friction stud welded joints |
| url | https://www.mdpi.com/1996-1944/16/12/4326 |
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