Surface electroanalytical approaches to organic polymeric coatings,Polymer International

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Surface electroanalytical approaches to organic polymeric coatings
Polymer International ( IF 2.9 ) Pub Date : 2020-09-15 , DOI: 10.1002/pi.6126
Eugene B Caldona ₁ , Dennis W Smith ₁ , David O Wipf ₁

Affiliation

Surface characterization techniques for organic polymeric coatings are numerous and diverse. Many of these techniques can provide physical information about how coating systems perform under certain environmental conditions, but they provide less mechanistic information on how they function as corrosion barriers. Since many coating failures are initiated from ionic diffusion through the coating and the subsequent reactivity at the coating–metal interface is mostly electrochemical in nature, the utility of electrochemical-based techniques is therefore more appropriate. This mini-review highlights five of the most commonly used electroanalytical techniques for the evaluation of corrosion protection properties for polymer coatings on metals: open circuit potential, electrochemical impedance spectroscopy, potentiodynamic polarization, electrochemical noise and scanning electrochemical microscopy. These techniques can perform their own unique approach of examining the protection performance of polymer coatings, but the elucidation of coating degradation and mechanism of corrosion at the coating–metal interface is their common objective. © 2020 Society of Industrial Chemistry

中文翻译：

有机聚合物涂层的表面电分析方法

有机聚合物涂层的表面表征技术多种多样。许多这些技术可以提供有关涂层系统在某些环境条件下如何运行的物理信息，但它们提供的关于它们如何作为腐蚀屏障的机械信息较少。由于许多涂层失效是由通过涂层的离子扩散引发的，并且涂层-金属界面的后续反应本质上主要是电化学的，因此基于电化学的技术的效用更合适。这篇小型综述重点介绍了用于评估金属上聚合物涂层腐蚀防护性能的五种最常用的电分析技术：开路电位、电化学阻抗谱、动电位极化、电化学噪声和扫描电化学显微镜。这些技术可以执行自己独特的方法来检查聚合物涂层的保护性能，但阐明涂层降解和涂层-金属界面处的腐蚀机制是它们的共同目标。© 2020 工业化学学会

更新日期：2020-09-15

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