Investigation of the impedance characteristics in the pitting evolutionary process of Alloy 690

Investigation of passive films formed on the surface of alloy 690 in borate buffer solution

“…The passive films played an important role in preventing corrosion. Therefore, it was very important to deeply understand the form processes of passive films for estimating the structural integrity [11]. The passivation characteristics and corrosion resistance of the passive films formed on the alloy 690 in borate buffer solution without and with chloride ion were investigated in the present study.…”

A New Method for Preventing Corrosion Failure: Thiourea and Hexamethylenetetramine as Inhibitor for Copper

“…As shown in Figure , the Nyquist plot obtained for the pure HCl contains a capacitive loop in the high‐frequency range followed by a straight line for lower frequencies. It is worth noting that the high‐frequency region should mainly display quick responses of the inhibitor film . The capacitive loop is linked to the charge‐transfer resistance of the inhibitor film.…”

An Investigation of a Combined Thiourea and Hexamethylenetetramine as Inhibitors for Corrosion of N80 in 15% HCl Solution: Electrochemical Experiments and Quantum Chemical Calculation

“…The Nyquist plot contains a capacitive loop in high frequency region, the center of capacitive loop lies under the real axis, which is related to the roughness, inhomogeneity of the solid surfaces, or adsorption of inhibitors. It is worth noting that the high frequency region should mainly display quick responses of the inhibitor film [30,31]. The capacitive loop is linked to the charge transfer resistance of the inhibitor film.…”