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Electrochemical and surface analysis studies on corrosion inhibition of Q235 steel by imidazoline derivative against CO2 corrosion

  • B. Wang
  • , M. Du*
  • , J. Zhang
  • , C. J. Gao
  • *此作品的通讯作者
  • Ocean University of China

科研成果: 期刊稿件文章同行评审

摘要

The inhibition performance of a newly synthesized thioureido imidazoline inhibitor (TAI) in CO2 corrosion was studied by using electrochemical impedance spectroscopy (EIS), atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS). Results show that the values of inhibition efficiency show peak-value-phenomenon at concentration of 0.15mmoldm-3 owing to the change of adsorption mode. The adsorption of protonated TAI molecules on the negatively charged steel surface makes the potential of zero charge (PZC) shift to positive direction, and the long-range electrostatic exclusive forces between AFM tip and sample surface are reduced by screening effect of surface charges.

源语言英语
页(从-至)353-361
页数9
期刊Corrosion Science
53
1
DOI
出版状态已出版 - 1月 2011
已对外发布

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