The uniform and localized corrosion of Zn in chloride solution were analyzed using the scanning vibrating electrode technique (SVET). Initially, shallow crystallographic pits nucleate, which then spread laterally assuming prismatic hexagonal orientations (100), and finally cover the whole surface. Anomalous cathodic currents are observed by SVET over the whole surface after the corrosion type changes from localized to uniform corrosion of the metal surface due to the lateral growth of pits. These anomalous residual cathodic currents are unreal and were assigned to pH and oxygen concentration variations near the electrode surface, changing the open circuit potential (OCP) of the vibrating Pt microelectrode of the SVET system in the negative direction toward the surface. The combined action of the /Zn²⁺ hydrolysis and oxygen reduction causes a pH increase toward the metal surface. A similar effect is expected in the case of oxygen depletion near the surface by the cathodic reaction. For a corrosion process under diffusion control, the concentration gradients will form in the region of the μ-electrode vibration, as confirmed by measuring the OCP of the μ-electrode versus the distance to the electrode surface.

使用扫描振动电极技术（SVET）分析了氯化锌溶液中锌的均匀腐蚀和局部腐蚀。最初，浅结晶凹坑形核，然后以棱柱形六边形取向（100）横向扩散，最后覆盖整个表面。由于点蚀的横向生长，腐蚀类型从局部腐蚀变为均匀腐蚀后，SVET会在整个表面上观察到异常阴极电流。这些异常残留的阴极电流是不真实的，并分配给电极表面附近的pH和氧气浓度变化，从而使SVET系统的振动Pt微电极的开路电势（OCP）朝着表面朝负方向变化。/ Zn ²⁺的联合作用水解和氧气还原会导致朝向金属表面的pH值增加。在通过阴极反应使表面附近的氧气耗竭的情况下，预期会有类似的效果。对于在扩散控制下的腐蚀过程，浓度梯度将在μ电极振动的区域中形成，这通过测量μ电极的OCP与到电极表面的距离来确定。