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首页> 外文期刊>Cogent Chemistry >Corrosion inhibition properties of the combined admixture of thiocarbanilide and hexadecyltrimethylammoniumbromide on mild steel in dilute acid solutions
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Corrosion inhibition properties of the combined admixture of thiocarbanilide and hexadecyltrimethylammoniumbromide on mild steel in dilute acid solutions

机译：稀酸溶液中硫咖啡和十六烷基三甲基铵溴铵腐蚀抑制特性

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摘要

The synergistic effect of the combined admixture of thiocarbanilide and hexadecyltrimethylammoniumbromide on the electrochemical corrosion behavior and inhibition of mild steel in 1?M H_(2)SO_(4) and HCl acid media was evaluated through weight loss analysis, potentiodynamic polarization technique, and IR spectroscopy. Results show that the admixture performed effectively in both acid solutions with an average HTH inhibition efficiency of 86.2 and 82% in H_(2)SO_(4) acid from weight loss and potentiodynamic polarization test while the corresponding values in HCl acid are 79 and 80%, respectively. Thermodynamic calculations showed that the compound chemically adsorbed onto the steel surface blocking the diffusion of corrosive anions and simultaneously suppressing the redox electrochemical process responsible for corrosion. Infrared spectroscopic images revealed the presence of the functional groups of the organic compound responsible for corrosion inhibition. Statistical derivations through Analysis of variance analysis confirmed that the inhibitor concentration is the only variable responsible for the inhibition efficiency values. Adsorption of the compound obeyed the Langmuir isotherm model.
机译：通过重量损失分析，电位偏振技术和IR，评估硫脲和十六烷基三甲基铵溴溴铵对电化学腐蚀行为的协同效应及其在1·（2）SO_（4）和HCl酸介质中的轻度钢的抑制作用光谱学。结果表明，在重量损失和电位偏振试验中，在H_（2）SO_（4）酸中的平均HTH抑制效率的平均HTH抑制效率的酸性溶液中的酸溶液有效地进行了86.2和82％，而HCl酸中的相应值为79和80 ％， 分别。热力学计算表明，化学上吸附到钢表面上的化合物阻挡腐蚀性阴离子的扩散并同时抑制负责腐蚀的氧化还原电化学过程。红外光谱图像揭示了负责腐蚀抑制的有机化合物的官能团的存在。统计衍生通过分析方差分析证实，抑制剂浓度是唯一对抑制效率值的可变变量。化合物的吸附遵循了Langmuir等温线模型。

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