Novel application of dynamic electrochemical impedance monitoring to a cataphoretic coating process

被引：4
作者：
Darowicki, K. [1 ]
Slepski, P. [1 ]
Szocinski, M. [1 ]
机构：
[1] Gdansk Univ Technol, Chem Fac, Dept Electrochem Corros & Mat Engn, 11-12 G Narutowicza Str, PL-80233 Gdansk, Poland
来源：
PROGRESS IN ORGANIC COATINGS | 2020年 / 149卷
关键词：
Cataphoresis; Cataphoretic coating; Dynamic electro; Chemical impedance spectroscopy; Polarization; Electrical properties; CORROSION PROTECTION; AUTOMOTIVE PRIMERS; FILIFORM CORROSION; EIS; OXIDATION; ETHANOL;
D O I：
10.1016/j.porgcoat.2020.105906
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The paper presents a novel method of on-line impedance monitoring of cataphoretic coating application process. Utilization of dynamic electrochemical impedance spectroscopy (DEIS) overcame the fundamental problem connected with non-stationarity of the aforementioned coating deposition process, which eliminates classical impedance spectroscopy technique from a real-time description of cataphoresis. The paper illustrates selected examples of potentialities of DEIS regarding the characterization of the cataphoretic coating process. Acquired instantaneous impedance spectra enabled on-line insight into impedance changes upon steel substrate polarization duration, thus visualizing coating application progress. DEIS allowed estimation of the time necessary for the coating/steel substrate system to achieve a steady state after polarization switch off. The proposed approach seems to be a step towards real-time monitoring of electrophoretic coating application and offers a potential for improved process control and optimization.
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页数：6
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