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首页> 外文期刊>Journal of Metallurgy >(472040)Some Thiophene Derivatives as Corrosion Inhibitors for Carbon Steel in Hydrochloric Acid
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(472040)Some Thiophene Derivatives as Corrosion Inhibitors for Carbon Steel in Hydrochloric Acid

机译:(472040)某些噻吩衍生物可作为盐酸中碳钢的腐蚀抑制剂

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Corrosion inhibitive performance of some thiophene derivatives during the acidic corrosion of carbon steel surface in 1M HCl was investigated by chemical technique (weight loss) and electrochemical techniques (potentiodynamic polarization, electrochemical frequency modulation, and electrochemical impedance spectroscopy). 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 the increase in inhibitor concentration and temperature. The adsorption of thiophene derivatives on the carbon steel surface obeys Langmuir adsorption isotherm. The obtained results indicated that the investigated compounds are chemically adsorbed on the steel surface. Potentiodynamic polarization studies showed that these compounds are mixed-type inhibitors and the results obtained from the techniques are in good agreement.
机译:通过化学技术(失重)和电化学技术(电位动力学极化,电化学频率调制和电化学阻抗谱)研究了某些噻吩衍生物在碳钢表面在1M HCl中的酸性腐蚀过程中的缓蚀性能。用失重法研究了温度对腐蚀速率的影响,确定并讨论了一些腐蚀和吸附过程的热力学参数。结果表明,随着抑制剂浓度和温度的升高,抑制效率增加。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,所研究的化合物化学吸附在钢表面上。电位动力极化研究表明,这些化合物是混合型抑制剂,从该技术获得的结果吻合良好。

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