Here, for the first time, we demonstrate the use of an in situ spectroelectrochemical Raman technique to explore simulated atmospheric corrosion scenarios with a variable boundary layer thickness ($\delta$). The effects of solution flow rate on oxygen concentration and $\delta$ were explored. It was found solution regeneration is necessary to prevent oxygen depletion in the Raman cell. It was further shown that by increasing the solution flow rate, the effective $\delta$ decreases and allows for the investigation of atmospheric corrosion scenarios. Finally, the technique developed was utilized to explore the effect of precipitation on the cathodic behavior of SS304L in dilute MgCl₂. During cathodic polarization, evidence supports previous observations that magnesium hydroxide species are kinetically favored over the thermodynamically predicted magnesium carbonate.

在这里，我们首次展示了使用原位光谱电化学拉曼技术探索边界层厚度可变的模拟大气腐蚀情况（$\delta$）。溶液流速对氧气浓度和$\delta$被探索了。发现溶液再生对于防止拉曼电池中的氧耗竭是必要的。进一步表明，通过增加溶液流速，有效$\delta$减少并允许调查大气腐蚀情况。最后，利用开发的技术来探索沉淀对SS304L在稀MgCl _2中的阴极行为的影响。在阴极极化期间，证据支持先前的观察，即氢氧化镁物质在动力学上优于热力学预测的碳酸镁。