Slepski, PawelGerengi, HusnuParasinska, DominikaGawel, Lukasz2025-10-112025-10-1120241996-1944https://doi.org/10.3390/ma17204985https://hdl.handle.net/20.500.12684/21553This study presents a novel application of Non-Linear Electrochemical Impedance Spectroscopy (NLEIS) in galvanostatic mode for the rapid, non-destructive assessment of metal degradation. By using galvanostatic mode instead of traditional potentiostatic methods, polarization-related challenges are mitigated, enabling more accurate and reliable analysis. The technique allows for the determination of corrosion rates (corrosion current) and material susceptibility to oxidation (Tafel coefficient) through a single measurement with a modulated AC perturbation signal. Theoretical assumptions of the method were validated through tests on both a non-linear model system and an experimental system. The proposed research methodology is highly effective for monitoring the condition of metallic materials in various environments, covering both anodic and cathodic processes.en10.3390/ma17204985info:eu-repo/semantics/openAccessdegradation of metallic materialsnon-linear electrochemical impedance spectroscopynon-destructive corrosion monitoringArticle1720394596912-s2.0-85207358974WOS:001341682600001Q2Q2