Abstract Steel is usually cleaned by acid solutions before its application in various industries. Such a treatment increases the possibility of steel corrosion, making the use of inhibitors in the cleaning bath indispensable. On this basis, the introduction of novel, efficient corrosion inhibitors is always of great importance. In the present research, three series of hydrazone Schiff bases were synthesized and investigated as corrosion inhibitors for mild steel in 1.0 M HCl solution. Corrosion experiments included weight loss, electrochemical impedance spectroscopy (EIS), and potentiodynamic polarization (PDP), which were performed at different temperatures. SEM images provided the surface analysis of the steel sheets in the absence and presence of the inhibitors. The prepared Schiff bases exhibited inhibition efficiencies higher than 92% at an optimum concentration of 0.01 M. The quantitative structure–activity relationship (QSAR) was used to obtain a correlation between the inhibition efficiency and the quantum chemical parameters of the inhibitors.

中文翻译：

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腙席夫碱在 1.0 M HCl 中对低碳钢进行有效腐蚀保护的优越电位

摘要 钢铁在应用于各行各业之前，通常用酸溶液清洗。这种处理增加了钢腐蚀的可能性，使得在清洗槽中使用抑制剂是必不可少的。在此基础上，引入新型、高效的缓蚀剂始终具有重要意义。在本研究中，合成了三个系列的腙席夫碱，并将其作为低碳钢在 1.0 M HCl 溶液中的缓蚀剂进行研究。腐蚀实验包括失重、电化学阻抗谱 (EIS) 和动电位极化 (PDP)，这些实验在不同温度下进行。SEM 图像提供了在抑制剂不存在和存在下钢板的表面分析。