Evaluating the performance of corn peptone in preventing the corrosion of mild steel immersed in HCl

IF 1.6 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials and Corrosion-werkstoffe Und Korrosion Pub Date : 2024-03-25 DOI:10.1002/maco.202414346

Taher Rabizadeh

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Abstract

The effects of biodegradable corn peptone on the corrosion behavior of mild steel in 0.1M HCl were evaluated. The results from the weight loss experiments indicate that changing the amount of corn peptone from 50 to 500 ppm considerably decreased the corrosion rate of the coupons from 28.24 to 4.67 mpy. However, heating the solutions had negative effects on this trend. According to the calculations, dissolving the inhibitor modified the thermodynamic parameters of the corrosion phenomenon. In addition, the adsorption of corn peptone was best fitted with the Langmuir isotherm. The Tafel polarization plots revealed that the presence of corn peptone decreased the corrosion current density from 134.9 to 6.7 µA cm⁻². This was compatible with the electrochemical impedance spectroscopy data. Furthermore, X-ray photoelectron spectroscopy analysis confirmed the adsorption of the tested peptone on the surface of the working electrodes, which based on the atomic force microscope images, reduced the surface roughness of the specimens.

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评估玉米蛋白胨在防止浸泡在盐酸中的低碳钢腐蚀方面的性能

评估了生物降解玉米蛋白胨对低碳钢在 0.1M HCl 中腐蚀行为的影响。失重实验的结果表明，将玉米蛋白胨的用量从 50 ppm 提高到 500 ppm，可大大降低试样的腐蚀速率，从 28.24 mpy 降低到 4.67 mpy。然而，加热溶液会对这一趋势产生负面影响。根据计算，溶解抑制剂改变了腐蚀现象的热力学参数。此外，玉米蛋白胨的吸附与 Langmuir 等温线最为吻合。塔菲尔极化图显示，玉米蛋白胨的存在使腐蚀电流密度从 134.9 微安 cm-2 降至 6.7 微安 cm-2。这与电化学阻抗光谱数据相符。此外，X 射线光电子能谱分析证实，受测蛋白胨吸附在工作电极表面，根据原子力显微镜图像，这降低了试样的表面粗糙度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materials and Corrosion-werkstoffe Und Korrosion 工程技术-材料科学：综合

CiteScore

3.70

自引率

11.10%

发文量

199

审稿时长

1.4 months

期刊介绍： Materials and Corrosion is the leading European journal in its field, providing rapid and comprehensive coverage of the subject and specifically highlighting the increasing importance of corrosion research and prevention. Several sections exclusive to Materials and Corrosion bring you closer to the current events in the field of corrosion research and add to the impact this journal can make on your work.