Inhibition of mild steel corrosion in 1M hydrochloric acid by 4-(N,N-dimethylaminobenzilidine)-3-mercapto-6-methyl-1,2,4-triazin(4H)-5-one (DAMMT)

Electroanalytical and Theoretical Investigations of the Corrosion Inhibition Behavior of Bis-1,2,4-Triazole Precursors EBATTand BBATT on Mild Steel in 0.1 N HNO3.

“…Probable assignments of Fourier transform infrared (FTIR) and nuclear magnetic resonance (NMR) spectra are as follows: FTIR (KBr) υ (cm −1 ): 3286 (NH 2 ), 2933 (CH 2 ), 1562 (C N), 1284 (CN), 1072 (CS). 1 H NMR (DMSO-d 6 ; δ, ppm): 13.49 (s, 2H, 2NH) two NH protons of the amino group, 5.56(s, 4H, 2NH 2 ), two NH 2 protons, 3.06 (s, 4H, 2CH 2 ) methylene protons of the two CH 2 groups. 13 C NMR (DMSO-d 6 ; δ, ppm): 150.67 (CN), 165.91 and 162.20 (C S) end group of thione.…”

“…The study of corrosion processes and their inhibition by organic compounds is an active field of contemporary research. − Computational quantum chemical calculations and molecular simulation studies have been used recently to explain the mechanism of corrosion inhibition. − The geometry of the inhibitor molecule in its ground state and the nature of their molecular orbitals (highest occupied molecular orbital, HOMO; lowest unoccupied molecular orbital, LUMO) are directly involved in the inhibitive properties of these molecules. This article describes the corrosion inhibition behavior of the bis-1,2,4-triazole derivatives 3,3′-(ethane-1,2-diyl) bis[4-amino-1H-1,2,4-triazole 5-(4H)-thione] (EBATT) and 3,3′-(butane-1,4-diyl) bis[4-amino-1H-1,2,4-triazole 5-(4H)-thione] (BBATT) on mild steel in 0.1 N nitric acid solution using electroanalytical and computational methods.…”

Silybum marianum extract as a natural source inhibitor for 304 stainless steel corrosion in 1.0 M HCl

“…The shift in the anodic Tafel slope (b a ) values may be due to the adsorption of chloride ions/or inhibitor modules onto the 304 SS surface [35]. The corrosion potential of 304 SS shifted 5-25 mV with respect to that of the blank, which suggests that S. marianum extract behaves as a mixed-type corrosion inhibitor for the corrosion of 304 SS in 1.0 M HCl solution [32,36,37].…”

Corrosion Inhibition Effect of 4-Hydroxy-N′-[(E)-(1H-indole-2-ylmethylidene)] Benzohydrazide on Mild Steel in Hydrochloric Acid Solution

“…This can be explained based on covered effect, that is, the extent of adsorption of inhibitor on the metal surface. The surface coverage ( ) of an organic substance on the metal surface depends not only on the structure of the organic substance but also on the nature of the metal, experimental conditions, and concentration of molecules [22]. The surface coverage increases with the increase in inhibitor concentration.…”