Abstract

The process of local corrosion of the aluminum surface in solutions of 0.1 M NaCl (pH 10–11.4) was studied. Data on the rates of local partial processes were obtained based on processing a series of images using computer vision methods. It is shown that the places of localization of defects are determined at the very beginning of the process and their location can be estimated in the first 10 min of the experiment. Based on changes in the diameter of hydrogen bubbles during the cathode process, the mass of aluminum dissolved during the anode process is calculated. The mass–time dependence is linear in semi-logarithmic coordinates and has the form m ~ t^α. It is established that α changes during the process: for small times, α > 1; for large times, α < 1.

中文翻译：

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利用光学原位显微镜和计算机视觉方法研究碱性氯化物介质中铝点蚀形成的初始阶段

摘要

研究了在0.1 M NaCl（pH 10-11.4）溶液中铝表面的局部腐蚀过程。基于使用计算机视觉方法处理一系列图像获得的局部局部过程的速率数据。结果表明，缺陷的定位位置是在过程的一开始就确定的，并且可以在实验的前10分钟内估计出缺陷的位置。根据阴极过程中氢气泡直径的变化，可以计算出阳极过程中溶解的铝的质量。质量-时间依赖性是线性的半对数坐标和具有形式米〜吨^α。可以确定的是，α在此过程中会发生变化：在短时间内，α> 1；长期以来，α<1。