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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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Autores principales: Zhao, Jie, Feng, Yuqi, Gao, Hui, Wang, Lei, Yang, Xiaoyu, Gu, Yanhong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10303829/
https://www.ncbi.nlm.nih.gov/pubmed/37374510
http://dx.doi.org/10.3390/ma16124326
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author Zhao, Jie
Feng, Yuqi
Gao, Hui
Wang, Lei
Yang, Xiaoyu
Gu, Yanhong
author_facet Zhao, Jie
Feng, Yuqi
Gao, Hui
Wang, Lei
Yang, Xiaoyu
Gu, Yanhong
author_sort Zhao, Jie
collection PubMed
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(3)O(4). According to the experimental results, the erosion–corrosion mechanism of friction stud welded joints in seawater environment was predicted.
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spelling pubmed-103038292023-06-29 Erosion–Corrosion Behavior of Friction Stud Welded Joints of X65 Pipelines in Simulated Seawater under Different Flow Rates Zhao, Jie Feng, Yuqi Gao, Hui Wang, Lei Yang, Xiaoyu Gu, Yanhong Materials (Basel) Article 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(3)O(4). According to the experimental results, the erosion–corrosion mechanism of friction stud welded joints in seawater environment was predicted. MDPI 2023-06-12 /pmc/articles/PMC10303829/ /pubmed/37374510 http://dx.doi.org/10.3390/ma16124326 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhao, Jie
Feng, Yuqi
Gao, Hui
Wang, Lei
Yang, Xiaoyu
Gu, Yanhong
Erosion–Corrosion Behavior of Friction Stud Welded Joints of X65 Pipelines in Simulated Seawater under Different Flow Rates
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 Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10303829/
https://www.ncbi.nlm.nih.gov/pubmed/37374510
http://dx.doi.org/10.3390/ma16124326
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