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首页> 外文会议>European corrosion congress;Eurocorr 2008 >Investigation of the inhibitive effect of polyethylene glycol on corrosion ofcarbon steel in acid mixture solution HCl + H2SO4
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Investigation of the inhibitive effect of polyethylene glycol on corrosion ofcarbon steel in acid mixture solution HCl + H2SO4

机译：聚乙二醇对酸性混合物HCl + H2SO4中碳钢腐蚀的抑制作用研究

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摘要

The corrosion of steel is the most common form of corrosion, especially in acid and acidmixtures. It has practical importance, for example, in the acid pickling of iron and steel,chemical cleaning of the scale in metallurgy, oil recovery and petrochemical industry, andother electrochemical systems. Corrosion behaviors of different metals have been studied inindustrial acid mixtures. According to inhibition effect of polyethylene glycols (PEG) oncarbon steel corrosion in acidic media, they were mentioned as corrosion inhibitors in thisstudy.The inhibition effect of PEG at two different mean molecular weight (200 and 6000gmol-1) on carbon steel corrosion was studied in mixture of 1N hydrochloric acid + 1Nsulphuric acid at different temperatures. This study was carried out by weight loss method,polarization and electrochemical impedance spectroscopy techniques and scanning electronmicroscopy. It was found that PEG has inhibition efficiency on carbon steel corrosion in thestudied medium. The polyethylene glycol's inhibition efficiency increased with an increase inits molecular weight and concentration. The inhibitor adsorption was found to followLangmuir adsorption isotherm. Thermodynamical parameters were also calculated forpolymer adsorption on carbon steel and demonstrated a spontaneous substitution adsorption.
机译：钢的腐蚀是最常见的腐蚀形式，尤其是在酸和酸混合物中。它在例如钢铁的酸洗，冶金中的水垢的化学清洗，石油回收和石油化学工业以及其他电化学系统中具有实际的重要性。已经研究了工业酸混合物中不同金属的腐蚀行为。根据聚乙二醇（PEG）在酸性介质中对碳钢腐蚀的抑制作用，本文将其作为缓蚀剂。研究了两种平均分子量（200和6000gmol-1）下PEG对碳钢腐蚀的抑制作用。在不同温度下在1N盐酸+ 1N硫酸的混合物中溶解。本研究通过失重法，极化和电化学阻抗谱技术以及扫描电镜进行。结果表明，PEG对所研究介质中的碳钢腐蚀具有抑制作用。聚乙二醇的抑制效率随其分子量和浓度的增加而增加。发现抑制剂吸附遵循Langmuir吸附等温线。还计算了聚合物吸附在碳钢上的热力学参数，并证明了自发取代吸附。

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  • 会议地点 Edinburgh(GB);Edinburgh(GB)
  • 作者

    N. Ghalebsaz-Jeddi; H. Ashassi- Sorkhabi; N. Modirshahla; M.Bahmani- Azar;

  • 作者单位

    Department of Chemistry Faculty of Science Islamic Azad University- Tabriz Branch Tabriz Iran E-mail: ghalebsaz@iaut.ac.ir;

    Electrochemical Research Lab Department of Physical Chemistry Chemistry Faculty University of Tabriz Tabriz Iran. E-mail: ashassi@tabrizu.ac.ir;

    Department of Chemistry Faculty of Science Islamic Azad University- Tabriz Branch Tabriz Iran E-mail:n_jeddi@yahoo.com;

    Department of Chemistry Faculty of Science Islamic Azad University- Tabriz Branch Tabriz Iran;

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  • 关键词

    carbon steel; polyethylene glycol; acid mixture;

    机译：碳素钢;聚乙二醇;酸混合物;

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