Corrosion of mild steel in hydrochloric acid solution in the presence of two cationic gemini surfactants with and without hydroxyl substituted spacers

Mohammad Mahdavian*, Ali Reza Tehrani-Bagha, Eiman Alibakhshi, Shabnam Ashhari, Mohammad Javad Palimi, Sajad Farashi, Soheila Javadian, Fatemeh Ektefa

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

37 Citations (Scopus)

Abstract

The corrosion inhibition mechanism of mild steel in acidic solution and in the presence of two cationic gemini surfactants have been studied. These are two surfactants having 12-carbon hydrophobic tails: one with a tetramethylene spacer and the other one with the same spacer containing two hydroxyl groups. EIS and polarization and electrochemical noise measurements revealed superior corrosion inhibition of hydroxyl functional surfactant compared with its counterpart with no hydroxyl group. Surface analysis including AFM, and SEM confirmed less corrosion attacks on the sample exposed to hydroxyl functional surfactant solution. Quantum chemical parameters revealed a good correlation with electrochemical results.

Original languageEnglish
Pages (from-to)62-75
Number of pages14
JournalCorrosion Science
Volume137
DOIs
Publication statusPublished - Jun 2018
MoE publication typeA1 Journal article-refereed

Keywords

  • A. Acid solutions
  • B. AFM
  • B. EIS
  • B. Mild steel
  • C. Acid inhibition

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