Durability and synergistic effects of KI on the acid corrosion inhibition of mild steel by hydroxypropyl methylcellulose

Experimental and theoretical studies of xanthan gum and its graft co-polymer as corrosion inhibitor for mild steel in 15% HCl

“…According to Lukovits et al [38] if the value of N is less than 3.6, the efficiency of inhibition increases with increasing electron-donating ability of the inhibitor to the metal surface. It has been reported previously that a low difference between E HOMO and E LUMO ( E) would provide good inhibition efficiency, because of the fact that the energy required by removing an electron from the last occupied orbital would be low [39]. Another important parameter is the dipole moment.…”

In-situ preparation, characterization and anticorrosion property of polypropylene glycol/silver nanoparticles composite for mild steel corrosion in acid solution

“…At higher system temperature, the reverse is the case. This can be explained on the basis of the fact that mobility of polymer is sensitive to temperature, time, and solvent [51]. At lower temperature of the system, the molecular mobility is reduced due to increased viscosity but as the temperature was raised, the inhibitor mobility was consequently increased.…”

Electrochemical and gravimetric measurements of inhibition of aluminum corrosion by poly (methacrylic acid) in H2SO4 solution and synergistic effect of iodide ions

“…This equivalent circuit is suitable for the modeling of the Al dissolution in 0.5 M H 2 SO 4 solution without and with PMAA as could be adjudged by the values of goodness of fit (v 2 ) ( Table 2). The constant phase element (CPE) which is defined by Y o and n are related in the impedance representation as follows [18]:…”

“…The authors noted that by allowing sufficient time, the iodide ions could upgrade the copolymer inhibitive performance to 93.85%. Arukalam [18] tested the performance of hydroxypropyl methylcellulose (HPMC) as safe corrosion inhibitor for mild steel in aerated 0.5 M H 2 SO 4 solution using weight loss, impedance and polarization measurements and the effect of addition of KI on the efficacy of the inhibitor. It was observed that addition of KI synergistically enhanced the inhibition efficiency of HPMC.…”