<i>N</i>,<i>N</i>'-Dialkylcystine Gemini and Monomeric <i>N</i>-Alkyl Cysteine Surfactants as Corrosion Inhibitors on Mild Steel Corrosion in 1 M HCl Solution: A Comparative Study.

The variation of the Tafel slopes with inhibitor concentration does not follow a definite trend, indicating that the studied surfactants insignificantly affected either the anodic iron dissolution or cathodic hydrogen evolution, and rather, inhibition occurred by a blocking mechanism on the available metal spaces. 32 The η PDP (%) of (C 12 Cys) and 2(C 12 Cys) obtained from corrosion current densities shows that efficiency is proportional to inhibitor concentration.

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