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Corrosion inhibition of iron in acidic solutions by alkyl quaternary ammonium halides: Correlation between inhibition efficiency and molecular structure

机译:烷基季铵卤化物对酸性溶液中铁的缓蚀作用:缓蚀效率与分子结构的关系

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The corrosion inhibition of iron in 0.5 M H2SO4 Solutions by alkyl quaternary ammonium halides (AQAH) inhibitors has been studied by potentiodynamic polarization curves and electrochemical impedance spectroscopy (EIS) measurements. The correlation between inhibition efficiency and molecular structure of the AQAH compounds is investigated. The results show that besides the concentration, the structure of alkyl groups and the type of halide ions of these AQAH inhibitors greatly influence the inhibition efficiency. Data obtained from EIS measurements are analyzed to model the corrosion inhibition process through appropriate equivalent circuit models. (c) 2005 Elsevier B.V. All rights reserved.
机译:通过电位动力学极化曲线和电化学阻抗谱(EIS)测量,研究了烷基季铵卤化物(AQAH)抑制剂对0.5 M H2SO4溶液中铁的腐蚀抑制作用。研究了AQAH化合物的抑制效率与分子结构之间的关系。结果表明,这些AQAH抑制剂除浓度外,烷基的结构和卤离子的类型还对抑制效率有很大影响。分析从EIS测量获得的数据,以通过适当的等效电路模型对腐蚀抑制过程进行建模。 (c)2005 Elsevier B.V.保留所有权利。

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