In this study, the local electrochemical activity of untreated and passivated (natural or chemical passivation) zinc specimens was observed during immersion in a 0.1‐M NaCl solution. The localized anodic activity during the exposure, measured with the scanning vibrating electrode technique, was linked to zinc dissolution by the pitting corrosion mechanism. It was correlated to specific corrosion products characterized by Fourier transmission infrared (FTIR) microscopy. FTIR molecule maps were produced from individual pitting corrosion sites (100–200 µm in width). With argon ion beam milling and latest energy‐dispersive X‐ray spectroscopy (EDS) technology, element maps with a high spatial resolution (≪100 nm) were recorded from abrasion‐ and beam‐sensitive corrosion products, showing a residual layer structure. This study demonstrates the capability of FTIR mapping, cross‐section polishing, and state‐of‐the‐art scanning electron microscopy imaging, and EDS element mapping to produce high‐resolution elemental, molecular, and visual information about pitting corrosion mechanisms on a hot‐dip galvanized steel sample.

中文翻译：

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使用SVET，FTIR和SEM（EDS）评估裸露和钝化（湿式scCO2诱导的镀锌和化学钝化）热浸镀锌钢板中的点蚀

在这项研究中，在浸入0.1-M NaCl溶液期间观察到了未经处理和钝化（自然或化学钝化）的锌样品的局部电化学活性。通过点蚀腐蚀机理，用扫描振动电极技术测量的曝光过程中的局部阳极活性与锌的溶解有关。它与以傅立叶透射红外（FTIR）显微镜为特征的特定腐蚀产物相关。FTIR分子图是从单个点腐蚀部位（宽度为100-200 µm）绘制的。借助氩离子束铣削技术和最新的能量色散X射线光谱（EDS）技术，从磨损敏感的和射线敏感的腐蚀产物中记录了具有高空间分辨率（≪100 nm）的元素图，显示了残余层结构。