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

Abstract

This article investigates the modification of a carbon steel surface by benzotriazole (BTA), and the structure and properties of the formed layers. Adsorption was studied by surface analytical methods such as X-ray photoelectron spectroscopy (XPS) and reflecting infrared microscopy (FTIR). It has been established that a polymer-like film containing iron-azole complexes that are 2 nm thick and strongly bonded to the metal is formed on the surface as a result of the azole interacting with a steel surface. This film is capable to inhibit uniform and localized corrosion of steel in neutral aqueous electrolytes containing chloride ions. It is shown that the iron-azole layer located at the interface acts as a promotor of adhesion, increasing the interaction of polymeric coatings with the steel surface. Taking into account these properties, the steel pretreatments can be used for improving the anticorrosion properties of polymeric coatings applied for the protection of steel constructions.

Adsorption of Organosilanes on the Surface of Aluminium and the Formation of Organosilane Films to Protect It from Corrosion

“…Thus, the outer layer of the films consisted of siloxane groups that arose as a result of the polycondensation reaction. Subsequent exposure to temperature led to the formation of a denser structural network, similar to polymer films [ 8 , 9 , 11 , 26 ]. The thickness of the formed films for DAS was 1.2–1.9 μm, and for VS was 0.5–0.8 μm.…”

“…In general, materials based on aluminium and its alloys are protected from corrosion during their usage by means of polymer and paint coatings. Such coatings have been well-established as one of the most effective ways to decrease corrosion risk under various conditions [ 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 ]. Often, for the application of coatings, the metal surface is subjected to a preliminary chemical treatment (finishing).…”

“…Organosilanes are artificial compounds that are synthesized from silicon dioxide [ 19 ]. Recently, this class of organosilicon compounds has been used as a metal corrosion inhibitor [ 3 , 7 , 8 , 9 ], including for pretreatment of Al surface from local dissolution [ 15 ]. This is due to its ability to adsorb on metal surfaces with the formation of siloxane structures resulting from polycondensation [ 20 , 21 , 22 ].…”

Synthesis, Experimental and DFT Studies of Some Benzotriazole Derivatives as Brass C68700 Corrosion Inhibitors in NaCl 3 %

“…[19] With the improvement of hardware and software, Recently, quantum chemical methods like functional density theory (DFT) has been used as fast and powerful tool to predict and understand corrosion inhibition performances of inhibitors. [20] Although there is an extensive literature on the corrosion properties of benzotriazole on steel and copper, [21][22] there are very few reports devoted to the various functional groups in BTA derivatives on the corrosion of brass. The objective of the present study, the synthesis of three new BTA derivatives Figure 1.…”

“…Although there is an extensive literature on the corrosion properties of benzotriazole on steel and copper, [21–22] there are very few reports devoted to the various functional groups in BTA derivatives on the corrosion of brass. The objective of the present study, the synthesis of three new BTA derivatives Figure 1.…”