Sebacic acid as corrosion inhibitor for hot‐dip galvanized (HDG) steel in 0.1 M NaCl

Abstract

The potential of sebacic acid as a corrosion inhibitor for hot-dip galvanized steel in 0.1 M NaCl solution has been investigated. Different concentrations of the organic acid have been tested in order to understand the inhibition mechanism of the compound. The electrochemical test revealed a competitive mechanism between the dissolution of the metal in the acidified solution and the inhibition provided by the dicarboxylic species. The formation of a whitish layer consisting of zinc carboxylates and corrosion products was proved by means of scanning electron microscopy (SEM) investigation combined with Fourier transform infrared (FT-IR) analysis. A bidentate bridging coordination between the Zn(II) and the carboxylic species is suggested.

A review on current research status of the surface modification of Zn-based biodegradable metals

“…In terms of industrial applications, Zn and its alloys have been widely used in the protection of steel against corrosion [ 3 , 4 ]. Almost half of the production of Zn comes into service for coatings [ 5 ]. Different methods have been adopted to prepare the Zn coatings including hot-dip galvanizing (HDG), electroplating, metalizing, mechanical plating and Zn rich paint [ 6 ].…”

Corrosion‐resistant and friction‐reducing performance of super‐hydrophobic coating on hot‐dip galvanised steel in a 3.5% NaCl solution

“…However, such zinc coating is fragile and still suffers serious corrosion in highly aggressive coastal and marine environments 2–4 . Inhibitors 5–7 and coatings 8–12 are often used to improve corrosion‐resistant performance. The situation becomes worse, however, when HDGS are used as sliding components that are subjected to the sliding and rolling process.…”

Study on corrosion behavior of new corrosion inhibitor imidazole derivatives for mild steel in oil‐in‐water emulsion

“…Xiong et al studied the inhibition effect of azole derivate on corrosion activity of copper in rolling oil, which have given that the addition of inhibitors decreased the corrosion rate of copper, and adsorption of inhibitors on copper surface obeys Langmuir isotherm and physisorption and chemisorption mechanism 20 . Fedel et al studied the sebacic acid as a corrosion inhibitor for hot‐dip galvanized steel in 0.1 M NaCl solution, which have shown a competitive mechanism between the dissolution of the metal in the acidified solution and the inhibition provided by the dicarboxylic species by means of scanning electron microscopy (SEM) investigation combined with Fourier transform infrared (FT‐IR) analysis 21 . Nowadays, the immediate priority should be the development cost–benefit and green inhibitors 22,23 …”

“…20 Fedel et al studied the sebacic acid as a corrosion inhibitor for hot-dip galvanized steel in 0.1 M NaCl solution, which have shown a competitive mechanism between the dissolution of the metal in the acidified solution and the inhibition provided by the dicarboxylic species by means of scanning electron microscopy (SEM) investigation combined with Fourier transform infrared (FT-IR) analysis. 21 Nowadays, the immediate priority should be the development cost-benefit and green inhibitors. 22,23 In this work, two imidazole derivatives, 2-(2-(…”