铜在电网接地工况下的腐蚀行为研究

doi:10.11902/1005.4537.2022.098

中国腐蚀与防护学报

2023, Vol. 43

Issue (2): 435-440 CSTR: 32134.14.1005.4537.2022.098 DOI: 10.11902/1005.4537.2022.098

研究报告

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铜在电网接地工况下的腐蚀行为研究

高义斌¹, 杜晓刚¹, 王启伟²(

), 钟黎明¹, 付文华¹, 张邯平¹, 张甍¹, 姜春海²

^1.国网山西省电力公司电力科学研究院太原 030001
^2.厦门理工学院材料科学与工程学院厦门 361024

Corrosion Behavior of Copper in a Simulated Grounding Condition in Electric Power Grid

GAO Yibin¹, DU Xiaogang¹, WANG Qiwei²(

), ZHONG Liming¹, FU Wenhua¹, ZHANG Hanping¹, ZHANG Meng¹, JIANG Chunhai²

^1.State Grid Shanxi Electric Power Research Institute, Taiyuan 030001, China
^2.School of Materials Science and Engineering, Xiamen University of Technology, Xiamen 361024, China

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摘要:

通过室内模拟加速实验、电化学测试以及X射线衍射 (XRD)、扫描电子显微镜 (SEM) 等手段对通电工况下铜接地网材料在酸性土壤环境中的腐蚀特征进行了研究。结果表明，通电条件对Cu的腐蚀行为有较大影响，Cu的腐蚀速率随外加电流密度的增大而逐渐增大；腐蚀产物以CuO和Cu₂O为主，Cu₂O的占比随外加电流密度的增大而减小。

关键词 ：接地工况, 纯铜, 土壤腐蚀, 交流电, 电网

Abstract：

The corrosion behavior of copper was studied by means of an indoor simulation accelerated test method, aiming to simulate the situation that copper earthed in acidic soil in power grid with alternating current (AC) interference, as well as electrochemical measurement, X-ray diffractometer (XRD) and scanning electron microscope (SEM). The results demonstrate that the interference current AC has a great influence on the corrosion of copper. The corrosion rate of copper is positively related to AC density. The main corrosion products are CuO and Cu₂O, while the proportion of Cu₂O was declined with the increasing AC density.

Key words： grounding condition copper soil corrosion alternating current electric power grid

收稿日期: 2022-04-08 32134.14.1005.4537.2022.098

ZTFLH:

TG172

作者简介: 高义斌，男，1979年生，教授级高级工程师

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	高义斌
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引用本文:

高义斌, 杜晓刚, 王启伟, 钟黎明, 付文华, 张邯平, 张甍, 姜春海. 铜在电网接地工况下的腐蚀行为研究[J]. 中国腐蚀与防护学报, 2023, 43(2): 435-440.
Yibin GAO, Xiaogang DU, Qiwei WANG, Liming ZHONG, Wenhua FU, Hanping ZHANG, Meng ZHANG, Chunhai JIANG. Corrosion Behavior of Copper in a Simulated Grounding Condition in Electric Power Grid. Journal of Chinese Society for Corrosion and protection, 2023, 43(2): 435-440.

链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2022.098 或 https://www.jcscp.org/CN/Y2023/V43/I2/435

图1 Cu的腐蚀速率随外加电流密度变化

图2 Cu在通过不同电流密度下的腐蚀产物XRD谱

图3 Cu在通过不同电流密度下的Cu2O/CuO峰比

图4 Cu在通过不同电流密度下的腐蚀产物SEM图

图5 Cu在酸性土壤模拟液中通过不同电流密度的动电位极化曲线

表1 Cu电极在酸性土壤模拟液中通过不同电流密度的动电位极化曲线拟合结果

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