| 引用本文: | 刘晨辉,刘光明,朱炎彬,林子斌,师超,张帮彦,刘欣.盐碱土中交流杂散电流对纯锌腐蚀行为的影响[J].材料科学与工艺,2026,(1):62-69.DOI:10.11951/j.issn.1005-0299.20240111. |
| LIU Chenhui,LIU Guangming,ZHU Yanbin,LIN Zibin,SHI Chao,ZHANG Bangyan,LIU Xin.Effect of AC stray current on corrosion behavior of pure Zinc in saline-alkali soil[J].Materials Science and Technology,2026,(1):62-69.DOI:10.11951/j.issn.1005-0299.20240111. |
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| 盐碱土中交流杂散电流对纯锌腐蚀行为的影响 |
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刘晨辉1,刘光明1,朱炎彬1,林子斌1,师超1,张帮彦1,刘欣2
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(1.南昌航空大学 材料科学与工程学院,南昌 330063; 2.国网江西省电力有限公司 电力科学研究院,南昌 330096)
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| 摘要: |
| 针对锌覆钢接地网材料中的锌层受到杂散电流干扰引起的腐蚀问题,本文采用静态腐蚀失重实验研究了不同交流电流密度干扰条件下纯锌在盐碱土中的腐蚀行为,并通过体视显微镜、SEM、EDS和XRD分析了纯锌的表面形貌及腐蚀产物的物相成分。研究表明,交流电流密度与纯锌的腐蚀失重量之间具有线性关系。随着交流电流密度从10 mA/cm2增加到100 mA/cm2,纯锌的腐蚀速率逐渐增加,腐蚀电位逐渐降低,表面腐蚀产物逐渐增多,腐蚀产物主要包括ZnO和Zn(OH)2。在100 mA/cm2电流密度干扰下,纯锌的腐蚀最为严重。在较大的电流密度干扰过程中,更多的净法拉第电流参与电化学反应,导致更多的电荷转移,从而使纯锌遭受更严重的腐蚀。 |
| 关键词: 纯锌 接地材料 交流杂散电流 全面腐蚀 土壤腐蚀 |
| DOI：10.11951/j.issn.1005-0299.20240111 |
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| Effect of AC stray current on corrosion behavior of pure Zinc in saline-alkali soil |
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LIU Chenhui1,LIU Guangming1,ZHU Yanbin1,LIN Zibin1,SHI Chao1,ZHANG Bangyan1,LIU Xin2
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(1.School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang 330063, China; 2.State Grid Jiangxi Electric Power Company Limited Electric Power Research Institute, Nanchang 330096, China)
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| Abstract: |
| To address the corrosion of zine coatings in Zinc-coated steel grounding grids caused by stray current interference, this paper investigates the corrosion behaviour of pure Zinc in saline soil under different alternating current (AC) current density interference conditions using static corrosion weightlessness test. The surface morphology of pure Zinc and the physical phase composition of corrosion products were analysed by body microscopy, scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD). The results show that there is a linear relationship between the AC current density and the weight loss of pure Zinc by corrosion. With the increase of AC current density from 10 mA/cm2 to 100 mA/cm2, the corrosion rate of pure Zinc gradually increased, the corrosion potential gradually decreased, the surface corrosion products gradually increased, and the primary corrosion products were identified as ZnO and Zn(OH)2. The corrosion of pure Zinc was most severe under the interference of current density of 100 mA/cm2. At higher current density disturbances, there were more net Faraday current is involved in the electrochemical reaction, causing more charge transfer, which leads to more severe corrosion of pure Zinc. Keywords: pure Zinc; grounding material; AC stray current; general corrosion; soil corrosion 〖FQ(+30mm。23,ZX-WZ〗收稿日期: 20240531. 网络出版日期: 20240920. 基金项目: 国家自然科学基金资助项目(51961028). 作者简介: 刘晨辉(1999—),男,硕士研究生. 通信作者: 刘光明,E-mail:gemliu@126.com. 期刊网址: http://hit.alljournals.cn/mst_cn/ch/index.aspx 电力系统中,接地装置是保证输变电设备正常运行和人员安全的重要组成部分。电力系统运行过程中会产 2)在交流干扰的影响下,腐蚀电位表现出先迅速下降随后逐渐趋于稳定的趋势。随着交流电流密度的增加,腐蚀电位逐渐降低。10~100 mA/cm2 |
| Key words: pure Zinc grounding material AC stray current general corrosion soil corrosion 〖FQ(+30mm。23,ZX-WZ〗收稿日期: 20240531. 网络出版日期: 20240920. 基金项目: 国家自然科学基金资助项目(51961028). 作者简介: 刘晨辉(1999—),男,硕士研究生. 通信作者: 刘光明,E-mail:gemliu@126.com. 期刊网址: http://hit.alljournals.cn/mst_cn/ch/index.aspx 电力系统中,接地装置是保证输变电设备正常运行和人员安全的重要组成部分。电力系统运行过程中会产 2)在交流干扰的影响下,腐蚀电位表现出先迅速下降随后逐渐趋于稳定的趋势。随着交流电流密度的增加,腐蚀电位逐渐降低。10~100 mA/cm2 |
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