Effects of 1-pyrrolidinedithiocarbamate and 2,5-dimercapto-1,3,4-thiadiazole on lead corrosion behavior in chloride medium - Sorbonne Université Access content directly
Journal Articles Journal of Electroanalytical Chemistry Year : 2023

Effects of 1-pyrrolidinedithiocarbamate and 2,5-dimercapto-1,3,4-thiadiazole on lead corrosion behavior in chloride medium

Abstract

The adsorption and corrosion protection of 1-pyrrolidinedithiocarbamate (PDTC) and 2,5dimercapto-1,3,4-thiadiazole (DMTD) on bare Pb were investigated. Surface analyses revealed that for high concentration (i.e 10 mM), the organic molecules are strongly adsorbed on Pb surface. In 30 g.L-1 NaCl, Pb corrosion current was highly decreased and anodic passivation was very efficient. EIS measurements and simulations enabled to evaluate organic films thickness, anodic charge transfer resistance Rta and metal/film interface resistivity ρ0. Efficient Pb corrosion protection was confirmed. Results obtained from Young and power law models showed that EIS parameters are not much dependent on the chosen analytical expression.
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Dates and versions

hal-04088866 , version 1 (04-05-2023)

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Wafaa Qafsaoui, A Et Taouil, Mai T.T. Tran, Hubert Cachet, Suzanne Joiret. Effects of 1-pyrrolidinedithiocarbamate and 2,5-dimercapto-1,3,4-thiadiazole on lead corrosion behavior in chloride medium. Journal of Electroanalytical Chemistry, 2023, 940, pp.117501. ⟨10.1016/j.jelechem.2023.117501⟩. ⟨hal-04088866⟩
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