Copper is widely used as conductive components in transmission lines, facing severe corrosion risks. The current passing through copper conductors will significantly affect its corrosion process, yet there is a lack of detailed study on the corrosion mechanism under this specific condition. Thus, this study investigated the effect of direct current current-carrying (DC C-C) conditions on the atmospheric corrosion behavior of copper conductors under thin electrolyte layer (TEL) through electrochemical measurements and corrosion exposure experiments. Results revealed that the presence of DC C-C significantly hastened the corrosion process of copper conductors in the TEL, leading to distinct corrosion patterns at the input and output ends. Furthermore, both the extent of corrosion acceleration and the unevenness of corrosion were positively correlation with the DC C-C level. The above phenomenon was attributed to the special motion of charged particles and paramagnetic substances in TEL under the self-generated magnetic field.

中文翻译：

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深入了解载流条件对铜导体大气腐蚀的加速效应


铜被广泛用作传输线中的导电元件，面临严重的腐蚀风险。通过铜导体的电流会显著影响其腐蚀过程，但目前还缺乏对这种特定条件下腐蚀机理的详细研究。因此，本研究通过电化学测量和腐蚀暴露实验，研究了直流载流 （DC C-C） 条件对薄电解质层 （TEL） 下铜导体大气腐蚀行为的影响。结果表明，DC C-C 的存在显著加速了 TEL 中铜导体的腐蚀过程，导致输入和输出端出现明显的腐蚀模式。此外，腐蚀加速程度和腐蚀不均匀性都与 DC C-C 水平呈正相关。上述现象归因于 TEL 中带电粒子和顺磁性物质在自生磁场下的特殊运动。