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首页> 外文期刊>Arabian Journal for Science and Engineering >Effects of Cinnamaldehyde as an Eco‑Friendly Corrosion Inhibitor on Mild Steel in Aerated NaCl Solutions
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Effects of Cinnamaldehyde as an Eco‑Friendly Corrosion Inhibitor on Mild Steel in Aerated NaCl Solutions

机译：肉桂醛作为环保型缓蚀剂对充气NaCl溶液中低碳钢的影响

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摘要

This article investigates the impact of cinnamaldehyde as an eco-friendly inhibitor in mitigating corrosion detriment on mildsteel in aerated NaCl (3% w/w) using weight loss and potentiodynamic polarization methods. The results indicate moderateinhibition efficiency of cinnamaldehyde reaching around 70% at an optimum level of 0.5 g/L or 500 ppm by establishing anadsorption film on metal surface. Adsorption of the cinnamaldehyde seemed to adhere to the Langmuir isotherm. The corrosionrate decreased with cinnamaldehyde dose up to the optimum level while increased slowly with the medium temperature.The activation energy (E_a) achieved with cinnamaldehyde was found to be lower than that of without cinnamaldehyde. Thepolarization curves revealed that the inhibitor performs as a mixed-type inhibitor since it diminishes both anodic and cathodiccurrent densities. The calculated inhibition efficiencies using both corrosion monitoring techniques were found to be in goodagreement. Additionally, the mild steel surfaces (inhibited and uninhibited) were examined by using SEM–EDX analysis.
机译：本文研究了肉桂醛作为一种环保抑制剂在减轻充气和氯化钠（3％w / w）中低碳钢腐蚀方面的影响，采用重量损失法和电位动力学极化法。结果表明，通过在金属表面形成吸附膜，肉桂醛的中等抑制效率达到最佳浓度为0.5 g / L或500 ppm时达到70％左右。肉桂醛的吸附似乎粘附在Langmuir等温线上。肉桂醛剂量达到最佳水平后腐蚀速率降低，而在中等温度下腐蚀速率缓慢升高。发现肉桂醛的活化能（E_a）低于没有肉桂醛的活化能。极化曲线表明该抑制剂可作为混合型抑制剂，因为它同时降低了阳极和阴极电流密度。发现使用两种腐蚀监测技术计算出的抑制效率是一致的。此外，通过使用SEM-EDX分析检查了低碳钢表面（受抑制和不受抑制）。

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