Application of Galvanostatic Non-Linear Impedance Spectroscopy to the Analysis of Metallic Material Degradation

被引:0
|
作者
Slepski, Pawel [1 ]
Gerengi, Husnu [2 ]
Parasinska, Dominika [1 ]
Gawel, Lukasz [1 ]
机构
[1] Gdansk Univ Technol, Fac Chem, Dept Electrochem Corros & Mat Engn, 11-12 G Narutowicza Str, PL-80233 Gdansk, Poland
[2] Duzce Univ, Fac Engn, Dept Mech Engn, Corros Res Lab, TR-81620 Duzce, Turkiye
关键词
degradation of metallic materials; non-linear electrochemical impedance spectroscopy; non-destructive corrosion monitoring; POLARIZATION RESISTANCE; HARMONIC-ANALYSIS; CORROSION; DEVIATION;
D O I
10.3390/ma17204985
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
This 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.
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页数:10
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