Abstract 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.

中文翻译：

---

动态电化学阻抗监测在电泳涂层工艺中的新应用

摘要 本文提出了一种新型电泳涂料应用过程阻抗在线监测方法。动态电化学阻抗谱 (DEIS) 的使用克服了与上述涂层沉积过程的非平稳性相关的基本问题，这从电泳的实时描述中消除了经典的阻抗谱技术。本文举例说明了 DEIS 在电泳涂层过程表征方面的潜力。获得的瞬时阻抗谱能够在线洞察钢基材极化持续时间的阻抗变化，从而可视化涂层应用进程。DEIS 允许估计涂层/钢基材系统在偏振关闭后达到稳定状态所需的时间。所提出的方法似乎是朝着实时监控电泳涂层应用迈出的一步，并为改进过程控制和优化提供了潜力。