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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.
Afiliação
  • Zhao J; School of Safety Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China.
  • Feng Y; School of Mechanical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China.
  • Gao H; School of Mechanical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China.
  • Wang L; School of Mechanical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China.
  • Yang X; School of Mechanical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China.
  • Gu Y; School of Mechanical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China.
Materials (Basel) ; 16(12)2023 Jun 12.
Article em En | MEDLINE | ID: mdl-37374510
ABSTRACT
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 Fe3O4. According to the experimental results, the erosion-corrosion mechanism of friction stud welded joints in seawater environment was predicted.
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2023 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2023 Tipo de documento: Article