Leaf extracts are widely used to mitigate the steel corrosion in an acidic environment. This work focuses on the effective acidic inhibition of a Piper Betle leaf extract (PBLE) that can be added to a green corrosion inhibitor system, giving a high corrosion inhibition performance of steel in a 0.1 M HCl solution. The relatively destructive potentiodynamic (PD) and potentiostatic (PS) polarizations combined with some non-destructive electrochemical techniques, including linear polarization resistance (LPR) and electrochemical impedance spectroscopy (EIS), perform the high corrosion inhibition likely a mixed behavior for steel in investigated solution. Surface analysis demonstrates that the nano porous film formation is PBLE concentration dependent. The results indicate that the inhibition efficiency is increased by the addition of PBLE at a concentration up to 2000 ppm due to a compact, robust, and uniform protective film formation. Moreover, an increase in PBLE concentration up to 2500 ppm decreased the inhibition efficiency due to a decrease of the PBLE species’ activity in the solution that significantly affects the nano porous film formation. This work suggests a new inhibitor that can be added to a green corrosion inhibitor system for delivering high corrosion resistance of steel through a controlled surface treatment.

叶提取物被广泛用于减轻酸性环境中的钢腐蚀。这项工作侧重于蒺藜叶提取物 (PBLE) 的有效酸性抑制，该提取物可以添加到绿色缓蚀剂体系中，从而在 0.1 M HCl 溶液中赋予钢的高缓蚀性能。相对破坏性的动电位 (PD) 和恒电位 (PS) 极化结合一些非破坏性电化学技术，包括线性极化电阻 (LPR) 和电化学阻抗谱 (EIS)，执行高腐蚀抑制，可能是研究中钢的混合行为解决方案。表面分析表明纳米多孔膜的形成依赖于 PBLE 浓度。结果表明，由于形成紧凑、坚固且均匀的保护膜，通过添加浓度高达 2000 ppm 的 PBLE 可提高抑制效率。此外，由于 PBLE 物质在溶液中的活性降低，PBLE 浓度增加到 2500 ppm 会降低抑制效率，这会显着影响纳米多孔膜的形成。这项工作提出了一种新的抑制剂，可以将其添加到绿色缓蚀剂系统中，通过受控的表面处理为钢提供高耐腐蚀性。PBLE 浓度增加到 2500 ppm 会降低抑制效率，因为溶液中 PBLE 物质的活性降低，这显着影响了纳米多孔膜的形成。这项工作提出了一种新的抑制剂，可以将其添加到绿色缓蚀剂系统中，通过受控的表面处理为钢提供高耐腐蚀性。PBLE 浓度增加到 2500 ppm 会降低抑制效率，因为溶液中 PBLE 物质的活性降低，这显着影响了纳米多孔膜的形成。这项工作提出了一种新的抑制剂，可以将其添加到绿色缓蚀剂系统中，通过受控的表面处理为钢提供高耐腐蚀性。