Review on Mechanistic Action of Inhibitors on Steel Corrosion in Acidic Media

Abstract

Use of inhibitor is proven as an efficient and widely accepted corrosion prevention method. Corrosion control of steel is an important activity in technical, economic, environmental and safety terms. This article enumerates several types of inhibitors used to combat corrosion in acidic medium. In this paper, literature on corrosion inhibitors has been reviewed and discussions are made on properties and efficiency of inhibitors. (The prominent features of our work on the mechanism of corrosion inhibitors have been highlighted and in a few cases have tried to predict its mechanism).

Electrochemical, Adsorption and Anticorrosion Study on Fluvoxamine and its Blends for X80 Steel Protection in Well Acidizing Fluids

“…The expression for the model is given in Eq. 7 [22]. (7) where is the concentration of inhibitor (M) in the acid solution and is the adsorption-desorption equilibrium constant, which relates to the free energy change of adsorption ( ), according to Eq.…”

Electrochemical Study of Penicillin-G as a Corrosion Inhibitor for Fe-19Cr Stainless Steel in Hydrochloric Acid

“…Metal corrosion is a major industrial problem, and it has attracted the attention of researchers worldwide [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. The use of inhibitors has been found to be one of the best practical methods available for the protection of metals against corrosion, especially in acidic media [8][9]23]. Inhibitors are substances (or a combination of substances) added in a very low concentration to treat the surface of a metal that is exposed to a corrosive environment, in order to terminate or reduce its corrosion rate [8].…”

“…The initial report of corrosion inhibition by organic inhibitors is attributed to Speller [11], who examined the corrosion inhibition of scaled water pipes in HCl. Since then, many organic and inorganic compounds that are added to corrosive fluids have been investigated for this purpose [10][11][12][13][14][15][16][17][18][19][20][21][22][23]. It is reported that organic materials, such as polymers or macromolecules having -OH, -COOH, -NH2, etc., functional groups, were found to be corrosion inhibitors in different corrosive environments.…”

“…Thus, the efficiency of an organic compound as a successful inhibitor is mainly due to its ability to be adsorbed onto the metal surface. Many studies show that a wide range of compounds have been successfully investigated as potential inhibitors for the corrosion of metals [11,23]. However, the use of these compounds has been lately questioned, due to the several negative effects they have caused in the environment.…”

Corrosive Inhibitive Study of Stainless Steel in Hydrochloric Acid Using Eco-Friendly Sesmum Indicum Oil

“…Generally the loss of equipment is done by pitting corrosion. Many organic compounds have been studied as corrosion inhibitor for different metals [1][2][3][4][5][6][7][8] . Larger amount of organic compounds have been use as inhibitor but they are poisonous and expensive, some ecofriendly, less costly and green inhibitors are substitute of organic inhibitors [9][10][11][12] .…”