Experimental and theoretical study for corrosion inhibition of mild steel 1 M HCl solution by some new diaminopropanenitrile compounds

Gravimetric and quantitative surface morphological studies of Mangifera indica peel extract as a corrosion inhibitor for mild steel in 1 M HCl solution

“…It has been established that adsorption of the inhibitors at the metals–solution interface is the first step of the inhibition mechanism. As the time of immersion increased, more inhibitors were adsorbed onto the surface of the metal forming a protective film layer and thereby slowed down the rate of corrosion …”

“…Abdallah et al explained that this variation between E a and ∆ H ° indicates that the corrosion process must involve a gaseous reaction, simply a hydrogen evolution reaction associated with a decrease in the total reaction volume. Both values were higher in the presence of MIPE than without MIPE, and this showed that there was an increase in the energy barrier to the corrosion reaction in the presence of the inhibitor without changing the mechanism of dissolution . Physisorption usually has activation energies in the range of 5–40 kJ/mol, whereas chemisorption ranged between 40 and 800 kJ/mol …”

Electrochemical and Surface Characterization Studies of 2-amino-6-methyl-5-oxo-4-phenyl-5,6-dihydro-4H-pyrano[3,2-c]quinoline-3-carbonitrile Compound on Copper in 2 M HNO<sub>3</sub>

“…The higher information tests for hindrance corrosion are inhibitors utilized to moderate the decrease of beneficial superiority of alloys due to corrosion when they electrochemically attack or chemically by its natural surroundings. The assembly of the inhibitor is one of the main factors that influence the inhibitor/metal interaction [11]. For Cu, which can obtain many-bonds, inhibitor molecules comprise S and N atoms are suggested power.…”