Electrochemical impedance study of thermally sprayable polyethylene coatings

Quantum chemical and experimental evaluation of the inhibitory action of two imidazole derivatives on mild steel corrosion in sulphuric acid medium

“…6) a depressed charge-transfer semicircle was appeared which is related to a single time constant shown in Bode's plot [El Mehdi et al., 2003; Wang et al., 2003]. But in blank solution and (10 −4 ,10 −5 ) M of IM-Cl and (10 −3 ,10 −4 ) M of IM-CH 3 , we note a first loop at high frequency ( HF ) attributed to the relaxation of the double layer capacitance in parallel with the charge transfer resistance Rt inversely proportional to the corrosion rate and an inductive loop at low frequency ( LF ) [Lgaz et al., 2018a, Lgaz et al., 2018b; Singh et al., 2009]. The LF inductive loop may be attributed to the relaxation process obtained by adsorption species as SO 4 2− ads and H + ads on the electrode surface [Singh and Quraishi, 2010a, Singh and Quraishi, 2010b].…”

Fatty acid based waterborne air drying epoxy ester resin for coating applications

“…The capacitance of the coating increases on water permeation due to the charge develops at the coating electrolyte interphase. The water uptake of coating in terms of volume fraction of water absorbed (W) was calculated from coating capacitance (C c ) by using following equation [29].…”

Biferrocenyl Schiff bases as efficient corrosion inhibitors for an aluminium alloy in HCl solution: a combined experimental and theoretical study

“…The decrease in CPE (C dl ) values can be assigned to a decrease in local dielectric constant and/or an increase in electrical double layer thickness, proposing that the biferrocenyl Schiff base inhibitor molecules are adsorbed at the metal/solution boundary. 45,46 A comparison of the capacitive loop of Fcua, Fcub and Fcuc indicates that ethoxy and methoxy substitutions have directly affected the anticorrosive efficiency of these biferrocenyl Schiff bases. The assessed inhibition efficiencies (h%) by using eqn (4) are 92%, 94% and 96% for Fcua, Fcub and Fcuc, respectively.…”