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A study of glycine-based dithiocarbamates as effective corrosion inhibitors for cold rolled carbon steel in HCl solutions
, Article Surfaces and Interfaces ; Volume 21 , 2020 ; Shockravi, A ; Mokarami Ghartavol, H ; Ziyaei Halimehjani, A ; Ostadrahimi, M ; Mirhosseini, S. M ; Behzadi, H ; Ghorbani, M ; Sharif University of Technology
Elsevier B.V
2020
Abstract
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. ©...