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首页> 外文期刊>International Journal of Electrochemical Science >Linseed Oil Based Amide as Corrosion Inhibitor for Mild Steel in Hydrochloric Acid
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Linseed Oil Based Amide as Corrosion Inhibitor for Mild Steel in Hydrochloric Acid

机译：亚麻籽油基酰胺在盐酸中对低碳钢的缓蚀剂

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摘要

A new inhibitor named linseed oil amide (LOA) has been synthesized. The molecule structure of LOA was characterized with Fourier transform infrared spectroscopy and its inhibition behavior for mild steel in hydrochloric acid was measured by weight loss, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and scanning electron microscopy. Weight loss measurements reveal that the corrosion rate was dependent on the concentration of the inhibitor, which decreases with increasing the LOA inhibitor concentration. Both of the anodic and cathodic are inhibited according to the potentiodynamic polarization results, while the cathodic effect is more pronounced, which indicates that the LOA inhibitor acts as a mixed-type with predominant control of cathodic reaction. The adsorption of LOA onto mild steel in hydrochloric acid follows Langmuir adsorption isotherm. Activation parameters are calculated and discussed, which imply the endothermic nature of the mild steel dissolution process and the adsorption of LOA inhibitor acts mainly as chemisorptions. The inhibition efficiency is still over 90% after immersion of 96 h, suggesting the long-term effective property of LOA inhibitor.
机译：合成了一种新的抑制剂，称为亚麻籽油酰胺（LOA）。用傅立叶变换红外光谱法对LOA的分子结构进行了表征，并通过失重，电势极化，电化学阻抗谱（EIS）和扫描电子显微镜测量了其对盐酸中低碳钢的抑制行为。失重测量显示腐蚀速率取决于抑制剂的浓度，腐蚀速率随LOA抑制剂浓度的增加而降低。根据电位动力学极化结果，阳极和阴极都被抑制，而阴极效应更为明显，这表明LOA抑制剂是一种混合型，主要控制阴极反应。 LOA在盐酸中低碳钢上的吸附遵循Langmuir吸附等温线。计算并讨论了活化参数，这暗示着低碳钢溶解过程的吸热特性，LOA抑制剂的吸附主要起化学吸附作用。浸泡96 h后，其抑制效率仍超过90％，这表明LOA抑制剂具有长期有效的性能。

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