Abstract Gum Acacia (GA) was evaluated for steel inhibition in acidic medium. Weight loss, EIS, and by polarization potentiodynamic curves were used to test it. GA showed a high efficiency in protecting steel from acid, and found as dependent on its concentration (1.0 g/L). AFM allowed comparing the morphology of steel with GA, which was complemented with XPS spectroscopy, which confirmed the complete adsorption of GA by evaluating the surface film composition. Polarization resistance increases when GA concentration does, based on EIS characterization, indicating the formation of a protective layer whereas PDP results showed that, GA behaves as a mixed-type inhibitor.

中文翻译：

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环保绿色缓蚀剂阿拉伯胶 (GA) 用于控制盐酸介质中低碳钢的腐蚀

摘要 金合欢树胶 (GA) 在酸性介质中对钢的缓蚀作用进行了评估。使用重量损失、EIS 和极化动电位曲线对其进行测试。GA 在保护钢免受酸腐蚀方面表现出很高的效率，并被发现取决于其浓度 (1.0 g/L)。AFM 允许将钢与 GA 的形态进行比较，这与 XPS 光谱相辅相成，通过评估表面膜组成证实了 GA 的完全吸附。根据 EIS 表征，当 GA 浓度增加时，极化电阻增加，表明形成了保护层，而 PDP 结果表明，GA 表现为混合型抑制剂。