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A study of glycine-based dithiocarbamates as effective corrosion inhibitors for cold rolled carbon steel in HCl solutions

Zeinali Nikoo, S ; Sharif University of Technology | 2020

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  1. Type of Document: Article
  2. DOI: 10.1016/j.surfin.2020.100751
  3. Publisher: Elsevier B.V , 2020
  4. Abstract:
  5. The corrosion inhibition of glycine-based dithiocarbamates with benzyl (BDTC) and propyl (PDTC) groups were investigated for cold rolled carbon steel (CRS) in 0.5 M HCl, indicating that the compounds as mixed type inhibitors significantly reduced the corrosion rate of the CRS due to the formation of a stable protective film on the metal surface. As confirmed by ATR-FTIR, SEM, AFM, XPS and theoretical studies, chemically adsorbed BDTC molecule is a better corrosion inhibitor with higher corrosion efficiency of about 98% at room temperature and a better thermal stability attributed to the Fe-S and Fe-N bindings, and in addition, to the presence of the benzene ring in the molecular structure. © 2020 Elsevier B.V
  6. Keywords:
  7. Cold rolled steel (CRS) ; Corrosion inhibitor ; DFT calculations ; Dithiocarbamate derivatives (DTC) ; Electrochemical studies ; Hydrochloric acid corrosion
  8. Source: Surfaces and Interfaces ; Volume 21 , 2020
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S2468023020307434