In-depth insights of inhibitory behaviour of 2-amino-4-methylthiazole towards galvanised steel in neutral NaCl solution

Structure and Dynamics of Aqueous 2-Aminothiazole/NaCl Electrolytes at Electrified Interfaces

“…Hence, the S atom and the amino group are pointing toward the graphene. This observation is consistent with experimental XPS results and highlights the significance to account for the electrode potential in molecular modeling simulations . At the cathode, however, most molecules are positioned parallel to the surface or are randomly oriented.…”

“…In any case, localized corrosion is associated with fluctuations in the electric field, that, as presented here, can displace/recover the organic inhibitor films near the electrode. To what degree these processes affect the initial formation of protective inhibitor films or their long-term stability requires further investigation. , …”

“…So far, the modeling of (b) and its inhibitor–inhibitor and inhibitor–electrolyte interactions has mostly been considered for molecules specifically designed to act as surfactants. − Instead, most computational studies focus on process (a) and model the inhibitor–surface interactions. ,,− Corrosion inhibition efficiency is often exclusively correlated with the electronic properties of a molecule. , Recently, Deng et al introduced 2-amino-4-methylthiazole (2AT-Me) as a potential corrosion inhibitor for zinc galvanized steel and compared it to the structurally related compounds 2-aminothiazole (2AT-H), 2-amino-4- iso -propylmethylthiazole (2AT-iPr), and 2-amino-4- tert -butylthiazole (2AT-tBu) with nearly identical electronic properties (Figure ). It was demonstrated that the corrosion inhibitive performance is strongly related to the varying hydrophobicity of 2AT-R (R = H, Me, iPr, tBu) and, therefore, predominantly dependent on inhibitor–electrolyte interactions.…”

Inhibitory behaviour and adsorption stability of benzothiazole derivatives as corrosion inhibitors towards galvanised steel

“…The chosen concentration is considered aggressive for chloride-induced corrosion and representative to simulate a corrosion environment for galvanised steel. 20 A maximum concentration of 1 mM was applied for both inhibitor cases, given that this concentration level is close to the solubility limit of 2-MBT. Prior to each electrochemical test, the corrosion condition was unified by neutralising the solution to pH 7.0 (±0.5) using diluted HCl or NaOH.…”

“…A previous study on the inhibition performance of 2-amino-4-methylthiazole (2AT-Me) has reported similar surface morphology of the inhibited ZE surface, which is attributed to the chemisorbed nature of the thin inhibitor layer. 20 For 2-MBT, surface morphology differs in that micro-sized particles are discerned upon the ZE surface. The chemical composition revealed by EDX (Fig.…”