Effect of Hydrodynamic Conditions, Temperature and Immersion Times on the Corrosion Inhibition Efficiency of API 5L X52 Steel in 1M HCl Containing 1H-1,2,4 or 1H-1,2,3-triazoles

Current Overview of Corrosion Inhibition of API Steel in Different Environments

“…On the other hand, also CIs based on drugs, − synthetic organic compounds, ,− ,− ionic liquids (ILs), ,− and their polymeric derivatives (PILs) have been studied as shown in Table . As for the study of drugs and their active principles as CIs of API steels, it has been limited; notwithstanding, there is evidence of their potential to inhibit corrosion provoked by HCl.…”

“…In order to counter acid corrosion, especially in HCl, also compounds derived from heterocyclic amines have been widely used, which is the case of Espinoza-Vázquez et al 42 who in 2017 studied synthetic isomeric triazoles such as 1 H -1,2,4-triazole ( T124 ) and 1 H -1,2,3-triazole ( T123 ) for API 5LX52 steel in 1 M HCl. The IE of both CIs revealed dependence on C INH under stationary conditions; in contrast, under flow conditions, it decreased up to ∼30% due to the desorption process by the τ increase.…”

Adsorption and corrosion inhibition behaviour of new theophylline–triazole-based derivatives for steel in acidic medium

“…Thus, heterocycles containing nitrogen, oxygen, sulfur and unsaturation in their structure are excellent candidates to be evaluated as corrosion inhibitors. In this context, nitrogen-containing heterocycles have been regarded as the most effective corrosion inhibitors of steel in acid solutions [13,14].…”

“…) 13. C NMR (125.77 MHz, CDCl 3 ): d ¼ 27.98 (N1-CH 3 ), 29.81 (N3-CH 3 ), 41.48 (C10), 54.32 (C13), 106.45 (C5), 123.48 (C12), 128.09 (C15), 128.89 (C17), 129.15 (C16), 134.23 (C14), 141.32 (C8), 142.52 (C11), 148.93 (C4), 151.58 (C2), 155.40 (C6).…”