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首页> 外文期刊>Der Pharma Chemica: journal for medicinal chemistry, pharmaceutical chemistry and computational chemistry >Thiophene derivatives as corrosion inhibitors for carbon steel in hydrochloric acid solutions
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Thiophene derivatives as corrosion inhibitors for carbon steel in hydrochloric acid solutions

机译：噻吩衍生物作为盐酸溶液中碳钢的腐蚀抑制剂

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The inhibiting effect of some thiophene derivatives in 1 M HCl on the corrosion of carbon steel was studied by weight loss, potentiodynamic polarization, electrochemical frequency modulation, (EFM) and electrochemical impedance spectroscopy (EIS) techniques .The effect of temperature on the corrosion rate was investigated by the weight loss method and some thermodynamic parameters for corrosion and adsorption processes were determined and discussed. The results show that the inhibition efficiency increased with increase in inhibitor concentration and decreases with raising temperature. The adsorption of thiophene derivatives on the carbon steel surface obeys Langmuir adsorption isotherm. The obtained results indicated that the investigated compounds are physically adsorbed on the carbon steel surface. Potentiodynamic polarization studies showed that these compounds are mixed-type inhibitors and the results obtained from the different techniques are in good agreement.
机译：通过失重，电势极化，电化学调频，电化学阻抗谱（EIS）技术研究了1M HCl中某些噻吩衍生物对碳钢腐蚀的抑制作用。温度对腐蚀速率的影响通过失重法进行了研究，确定并讨论了一些用于腐蚀和吸附过程的热力学参数。结果表明，抑制效率随抑制剂浓度的增加而增加，随温度的升高而降低。噻吩衍生物在碳钢表面上的吸附遵循Langmuir吸附等温线。所得结果表明，所研究的化合物物理吸附在碳钢表面上。电位动力学极化研究表明，这些化合物是混合型抑制剂，不同技术获得的结果吻合良好。

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