Scholarlink

<p>In this study, the inhibition effect of <i>Linum usitatissimum</i> oil extract against the corrosion of API X70 steel was investigated in 3.5% NaCl solution saturated with CO<sub>2</sub> at 50&#xa0;°C for 24&#xa0;h of immersion. <i>Linum usitatissimum</i> oil extract was characterized by Fourier transform infrared spectroscopy (FTIR), confirming the presence of the carbonyl group (C = O) common in vegetable oils, aromatic rings (C = C), and organic compounds (C–H). The inhibition effect of <i>Linum usitatissimum</i> oil extract was evaluated by electrochemical measurements such as open circuit potential (OCP), linear polarization resistance (LPR), polarization curves, and electrochemical impedance spectroscopy (EIS). The results showed that the inhibitor exhibits an inhibition efficiency of 80% at 100&#xa0;ppm. The EIS results showed that with increasing immersion time, the charge transfer resistance (R<sub>ct</sub>) increased, and the double layer capacitance (C<sub>dl</sub>) decreased, decreasing the corrosion rate and forming a dense, stable, protective film. Scanning electron microscopy (SEM) was used to study the morphology of the steel exposed to the corrosive environment. Surface analysis demonstrated that the inhibitor reduced surface roughness and provided good protection against CO<sub>2</sub> corrosion.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Evaluation of Linum usitatissimum Oil Extract for CO2 Corrosion Inhibition for API X70 Steel

  • 期刊论文

  • 发表日期：

    2025年9月25日

查看全文
  • M. F. Ramirez Martinez,
  • A. K. Larios Galvez,
  • D. G. Gutierrez Granda,
  • J. Porcayo Calderon,
  • J. G. Gonzalez Rodriguez,
  • A. Brito Franco,
  • A. M. Ramirez Arteaga,
  • R. Lopez Sesenes

摘要

In this study, the inhibition effect of Linum usitatissimum oil extract against the corrosion of API X70 steel was investigated in 3.5% NaCl solution saturated with CO2 at 50 °C for 24 h of immersion. Linum usitatissimum oil extract was characterized by Fourier transform infrared spectroscopy (FTIR), confirming the presence of the carbonyl group (C = O) common in vegetable oils, aromatic rings (C = C), and organic compounds (C–H). The inhibition effect of Linum usitatissimum oil extract was evaluated by electrochemical measurements such as open circuit potential (OCP), linear polarization resistance (LPR), polarization curves, and electrochemical impedance spectroscopy (EIS). The results showed that the inhibitor exhibits an inhibition efficiency of 80% at 100 ppm. The EIS results showed that with increasing immersion time, the charge transfer resistance (Rct) increased, and the double layer capacitance (Cdl) decreased, decreasing the corrosion rate and forming a dense, stable, protective film. Scanning electron microscopy (SEM) was used to study the morphology of the steel exposed to the corrosive environment. Surface analysis demonstrated that the inhibitor reduced surface roughness and provided good protection against CO2 corrosion.