XPES of 1,2,3-benzotriazole nanolayers formed on iron surface

Thin Benzotriazole Films for Inhibition of Carbon Steel Corrosion in Neutral Electrolytes

“…The surface is noticeably hydroxylated, since there is a peak at 532 eV, which is obtained by the decomposition of the oxygen spectrum along with a peak of oxygen at 530 eV, which is part of the structure of iron oxide. Using the integrated intensities of the peaks of the corresponding elements that make up the surface layers leads to the following layer thicknesses: carbon pollution -0.8 nm, OH-1.2 nm, and iron oxides 1.8 nm [11].…”

“…Among the perspective inhibitors, organic heterocyclic compounds capable of forming stable complexes with cations of the metallic substrate are extremely important [6][7][8][9][10][11][12][13][14][15][16][17]. The resulting ultrathin (several nm thick) protective films are often formed, which are resistant to the impact of the corrosive environment (humid and polluted atmosphere, aqueous electrolytes of soil) [6,16].…”

“…The resulting ultrathin (several nm thick) protective films are often formed, which are resistant to the impact of the corrosive environment (humid and polluted atmosphere, aqueous electrolytes of soil) [6,16]. The interest to heterocyclic compounds as corrosion inhibitors for ferrous and nonferrous metals has remained high due to their relatively low working concentrations, high reactivity, and protective efficiency [8][9][10][11][12]. Benzotriazole (BTA) ( Figure 1) is a well-known corrosion inhibitor for copper and copper alloys that is most effective from heterocyclic compounds.…”

“…However, in the literature, there is practically no information on the structure of the layers as a result of metal treatment with a solution containing BTA. A study of the adsorption of heterocyclic compounds would allow one to determine the properties of surface protective layers responsible for corrosion inhibition and to identify the advantages of heterocyclic compounds in comparison with other corrosion inhibitors [11,12]. The structure of the complexes present in Figure 2 estimates for species deposited from solution at a certain distance from the surface and cannot affect the metal corrosion significantly.…”

Corrosion Inhibition of Low-Carbon Steel by Hydrophobic Organosilicon Dispersions

“…Oxidative corrosion inhibitors (chromates, molybdates, tungstates, etc.) have good protective properties against many structural metals in a wide pH range, but chromates are toxic, and their use is excluded [12,14]. Tungstates and molybdates have a chemical structure similar to chromates; however, they are not as effective and have a high cost, which sharply limits their application.…”