Abstract Time–evolution study of 2-(2-pyridyl) benzimidazole (2PB) as CO2 corrosion inhibitor for API X60 steel under hydrodynamic conditions in a synthetic brine solution has been undertaken. Electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization (PDP) techniques were employed for this study. The results indicate that 2.56 mM of 2PB could provide up to 88.3 % inhibition efficiency after 12 h at 4000 rpm in the synthetic brine solution. The addition of 0.14 mM thiobarbituric acid (TBA) significantly enhances 2PB performance to 95.6 % using PDP. ATR-IR, SEM and optical image characterizations confirm that 2PB adsorption suppresses the localized corrosion of the steel.

中文翻译：

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油田应用绿色缓蚀剂Ⅱ：API X60钢在合成盐水中甜腐蚀的时间演化效应及湍流流体动力学下2-(2-吡啶基)苯并咪唑的缓蚀性能

摘要 2-(2-吡啶基)苯并咪唑 (2PB) 作为 API X60 钢的 CO2 腐蚀抑制剂在合成盐水溶液中的流体动力学条件下进行了时间演化研究。本研究采用电化学阻抗谱 (EIS) 和动电位极化 (PDP) 技术。结果表明，在 4000 rpm 的合成盐水溶液中，2.56 mM 的 2PB 在 12 小时后可提供高达 88.3% 的抑制效率。使用 PDP，添加 0.14 mM 硫代巴比妥酸 (TBA) 可将 2PB 性能显着提高至 95.6%。ATR-IR、SEM 和光学图像表征证实 2PB 吸附抑制了钢的局部腐蚀。