Influence of 2,3-Dihydroxyflavanone on Corrosion Inhibition of Mild Steel in Acidic Medium

Abstract

The inhibition effect of 2,3-dihydroxyflavone on the corrosion of mild steel in 100-600 ppm aqueous hydrochloric acid solution has been investigated by weight loss and electrochemical impedance spectroscopy. The corrosion inhibition efficiency increases with increasing concentration and time. The effect of temperature on the corrosion behavior of mild steel in 1 M HCl with addition of inhibitor was studied at the temperature range of 300-330 K. UV-Vis, FTIR, and surface analysis (SEM) was also carried out to establish the corrosion inhibitive property of this inhibitor in HCl solution. The adsorption of this inhibitor on the mild steel surface obeys the Langmuir adsorption isotherm. Electrochemical studies reveal that the inhibitor is a cathodic type.

Opuntia ficus-indicaExtract as Green Corrosion Inhibitor for Carbon Steel in 1 M HCl Solution

“…A big number of scientific studies have been devoted to the inhibitive action of green inhibitors on the corrosion of mild steel in acidic solutions, showing that these extracts could serve as good corrosion inhibitors. For instance, Gopiraman et al [1] evaluated Brugmansia suaveolens and Cassia roxburghii [1] for the corrosion inhibition of mild steel in hydrochloric acid by using weight loss and electrochemical impedance spectroscopy, obtaining inhibitor efficiency values close to 95%. Ji et al [2] evaluated the use of Musa paradisiaca for the corrosion inhibition of mild steel in HCl with the same methods as above plus polarization curves and FT-IR analysis, finding that this extract is absorbed onto the steel surface following a Langmuir type of adsorption isotherm.…”

An investigation of mild carbon steel corrosion inhibition in hydrochloric acid medium by environment friendly green inhibitors

“…Various parts like seeds, fruits, leaves, flowers, etc., have been used as corrosion inhibitors. 3,4 Due to number of heterocyclic atoms (such as nitrogen, oxygen, sulfur, and phosphorus), green inhibitors can adsorb onto metal surfaces. In addition, multiple bonds or aromatic rings can block the active corrosion sites on the metal surface.…”

2‐[(E)‐{(1S,2R)‐1‐Hydroxy‐1‐phenylpropan‐2‐ylimino}methyl]phenol for Inhibition of Acid Corrosion of Mild Steel

“…The thermodynamic parameters such as DH ads , DS ads , DG ads , and Q ads were calculated in a similar way to our earlier reports [26,27] and the results are presented in Table 3. The negative value of the Gibbs free energy of adsorption suggests a spontaneous adsorption process during inhibition of corrosion.…”