A study of performance of corrosion prevention compounds on AA2024-T3 with electrochemical impedance spectroscopy

Performance studies of phosphate‐doped polyaniline containing paint coating for corrosion protection of aluminium alloy

“…In a recent study by Gui and Kelly30 on the performance of corrosion protection coatings on AA 2024‐T3 aluminum alloy by EIS, it has been shown that the coating with impedance value above 0.1 M Ω cm 2 or capacitance values below 7.6 × 10 −8 F cm −2 exhibit excellent protection. In this study it is found that both the coatings exhibit resistance values above 3 M Ω cm 2 and capacitance values below 1.0 × 10 −8 F cm −2 .…”

Corrosion inhibition of 7000 series aluminium alloys with cerium diphenyl phosphate

“…The EIS measurements were conducted over a period of 6 days and the fitted parameters for 30 min, 3 days and 6 days are given in the table. In the case of the control specimens, the 7050 alloy containing the most Cu (but least Fe) appears to have the lowest resistance and highest double layer capacitance (previously shown to correlate with a higher level of corrosion [22]) as compared with the 7075 and 7022 alloys. This alloy also seems to show the biggest time dependence for R in the presence of inhibitor, although the value of R after 6 days is not significantly different amongst these alloys.…”

Electrochemical performance of sol–gel derived phospho-silicate-methacrylate hybrid coatings

“…This paper is mainly focused on the use of electrochemical methods and Scanning Kelvin Probe (SKP) microscopy to evaluate the adhesion and corrosion protection properties of the newly obtained sol-gel derived hybrid coating along with its electrochemical performance. Because of its non-invasive nature and its ability to discriminate coating performance, Electrochemical Impedance Spectroscopy (EIS) has been widely used as a nondestructive technique to study coatings on metals to gain complementary information to that obtained by traditional methods for characterizing the behavior of coatings in corrosive environments [9]. But they are integral methods and thus lack spatial resolution, which is a major drawback especially in the early stages of the degradation process.…”