In this work, we have tested a new inhibitor formulation that is effective, economically efficient and in accordance with environmental legislation. The inhibitor tested is the crude extract of the oat plant (denoted as OE) obtained by the reflux method in the water. This extract is then used as a corrosion inhibitor of mild steel in 3% NaCl. This study was carried out by using electrochemical polarizations, Electrochemical Impedance Spectroscopy and gravimetric techniques. The results obtained showed that this extract satisfactorily inhibits the dissolution rate of mild steel. The inhibition efficiency increases with inhibitor concentration and reaches 72% at 5g⋅L−1 of oat extract. Polarization data indicate that the extract acted as mixed type. The adsorption of the inhibitor on the mild steel surface in 3% NaCl follows the Langmuir adsorption isotherm. SEM analysis of the electrode surface condition confirms the results obtained.

中文翻译：

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燕麦提取物在 3% NaCl 溶液中作为低碳钢的天然缓蚀剂

在这项工作中，我们测试了一种有效、经济且符合环境法规的新型抑制剂配方。所测试的抑制剂是燕麦植物的粗提物（记为OE），在水中通过回流法获得。然后将该提取物用作低碳钢在 3% NaCl 中的缓蚀剂。这项研究是通过使用电化学极化、电化学阻抗谱和重量分析技术进行的。结果表明，该提取物可令人满意地抑制低碳钢的溶解速率。抑制效率随着抑制剂浓度的增加而增加，在 5 时达到 72%G⋅大号-1燕麦提取物。极化数据表明提取物为混合型。缓蚀剂在 3% NaCl 中对低碳钢表面的吸附遵循 Langmuir 吸附等温线。电极表面状态的 SEM 分析证实了所获得的结果。