Synergistic effect of potassium iodide on corrosion inhibition of copper by tetraphosphonic acid in hydrochloric acid solution

Green inhibition of copper corrosion by ammoides verticillata oil in 1M nitric acid: weight lossand Raman spectroscopic mapping studies

“…10 On the other hand, the ΔGads values are around -20 KJ/mol for the two inhibitors studied, which shows that there is a physisorption of the inhibitor on the copper surface in a solution of 1 M nitric acid at 25°C by electrostatic interactions between the copper surface charges and the inhibitor molecules. 3 The negative value of ΔGads confirmed the spontaneity of its process and the stability of the protective film formed on the copper sample surface. 16,21 Table 6 Thermodynamic parameters for adsorption of two inhibitors on copper tested in a 1M HNO3 solution at 25°C…”

“…1,2 At the industrial level, the cleaning process of the devices is carried out with the help of acid solutions that act as corrosive agents, so it is necessary to minimize the destructive effect of acids on these devices. 3 A crucial environmental, economic, and safety issue is corrosion. It has an impact on a variety of structures, particularly metallic ones.…”

Synergistic effect of KI on the corrosion inhibition of a poly(diallylammonium chloride)-based cyclocopolymer containing bis-cationic motifs for mild steel corrosion in 20% formic acid

“…Ascribed to the polarizability issue, I − ion is the most effective in this regard, followed by Br − and Cl − . 25,26 Following the synergistic effect of 2 mmol KI, it was found that, as shown in Table 1, the IE of inhibitor 8b increases significantly, with 1 ppm of the inhibitor and 2 mmol KI imparting more than 90% IE, which is truly remarkable. The IE of 8b for every studied concentration increased slowly upon adding 2 mmol KI.…”

“…It has been reported that halide ions help organic inhibitors adsorb onto metal surfaces and improve their inhibitive effects. 25,26 Solomon and Umoren studied the synergism of polypropylene glycol (PPG) and KI for mild steel corrosion in 0.5 M H 2 SO 4 . 27 Adding 5 mM KI to 1000 ppm of PPG improved the IE from 83.8% to 98.7%.…”

Synergetic Effect of Potassium Iodide and Miana (Coleus scutellaroides (L.) Benth.) Leaves Extract on Mild Steel in HCl Medium

“…In contrast, the rate of corrosion tends to increase while the efficiency of inhibition diminishes with increasing temperature. This is because the mild steel surface has EDM chemicals desorbing on it, which eventually speeds up the corrosion process (Sait et al, 2021). With an inhibitory efficiency of 92.784%, the lowest corrosion rate is measured at a concentration of 0.4 g/L of MLE at 30°C, or 0.095 mg/cm²hour.…”