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首页> 外文期刊>Journal of Materials Engineering and Performance >Corrosion Mechanism of Low-Carbon Steel in Industrial Water and Adsorption Thermodynamics in the Presence of Some Plant Extracts
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Corrosion Mechanism of Low-Carbon Steel in Industrial Water and Adsorption Thermodynamics in the Presence of Some Plant Extracts

机译：一些植物提取物存在下低碳钢在工业水中的腐蚀机理和吸附热力学

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摘要

The effects of radish leaves and black cumin as plant extracts on the corrosion behavior of low-carbon steel in industrial water in the temperature range of 30 to 80 °C and velocity range of 1.44 to 2.02 m s?1 using potentiodynamic polarization, electrochemical impedance spectroscopy, and mass loss measurements have been investigated. The inhibition efficiency increased with increasing concentration of the plant extracts up to a critical value but it slightly decreased with increasing temperature. Inhibition efficiency values obtained from mass loss and potentiodynamic data were in reasonable agreement. Potentiodynamic polarization clearly indicated that radish leaves and black cumin extracts acted as anodic inhibitors. The adsorption behavior was found to obey the Flory-Huggins isotherm model. The associated activation parameters and thermodynamic data of adsorption were evaluated and discussed. The results show that radish leaves and black cumin could serve as effective inhibitors for low-carbon steel in industrial water media, with black cumin providing better protection than radish leaves.
机译：电位动力学极化法在温度范围为30至80°C，速度范围为1.44至2.02 ms？1的条件下，萝卜叶和黑孜然作为植物提取物对低碳钢在工业水中的腐蚀行为的影响，电化学阻抗谱和质量损失测量已进行了研究。抑制效率随植物提取物浓度的增加而增加，直至达到临界值，但随温度升高而略有下降。从质量损失和电位动力学数据获得的抑制效率值是合理一致的。电位动力学极化清楚地表明，萝卜叶和黑孜然提取物可作为阳极抑制剂。发现吸附行为服从Flory-Huggins等温模型。评估和讨论了相关的活化参数和吸附的热力学数据。结果表明，萝卜叶和黑孜然可以作为工业用水介质中低碳钢的有效抑制剂，而黑孜然比萝卜叶提供更好的保护。

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