铜/锌在不同pH土壤模拟液中的电偶腐蚀行为
Galvanic Corrosion Behavior of Copper/Zinc in Simulated Soil Solution with Different pH Values
摘 要
采用开路电位、动电位极化、土壤模拟液中电偶电流测试、丝束电极以及扫描振荡电极技术（SVET）研究了在不同pH土壤模拟液中Cu/Zn电偶对的电偶腐蚀程度以及空间分布特征。结果表明：随着介质pH的降低，Cu/Zn电偶对的腐蚀速率增加。并且在Cu/Zn电偶对形成的电场作用下铜锌电偶对中锌的腐蚀主要发生在铜/锌电偶对界面附近。
接地网
材料
电偶腐蚀
pH
soil corrosion
grounding grid
material
galvanic corrosion
pH
Abstract
Using open circuit potential, potentiodynamic polarization, galvanic couple (GC) current tests in soil simulation solution and scanning oscillation electrode technology (SVET), the galvanic corrosion degree and spatial distribution characteristics of Cu/Zn galvanic couple in different pH soil simulation liquids were studied. The results showed that as the pH of the medium decreased, the corrosion rate of the Cu/Zn galvanic couple increased. And under the action of the electric field formed by the Cu/Zn galvanic couple, the corrosion of zinc in the copper-zinc galvanic couple mainly occurred near the interface of the copper/zinc galvanic couple.
中图分类号 TG174 DOI 10.11973/fsyfh-202202005
所属栏目 试验研究
基金项目 国家电网有限公司总部科技项目（52130417002G）
收稿日期 2020/1/25
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引用该论文: CHEN Yunxiang,LIN Deyuan,FAN Xiaolei,ZHANG Junxi,HONG Yicheng,CAI Jianbin. Galvanic Corrosion Behavior of Copper/Zinc in Simulated Soil Solution with Different pH Values[J]. Corrosion & Protection, 2022, 43(2): 28
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参考文献
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【2】DAWALIBI F, PINHO A. Computerized analysis of power systems and pipelines proximity effects[J]. IEEE Transactions on Power Delivery, 1986, 1(2):40-48.
【3】GRCEV L, DAWALIBI F. An electromagnetic model for transients in grounding systems[J]. IEEE Transactions on Power Delivery, 1990, 5(4):1773-1781.
【4】XIONG W, DAWALIBI F P. Transient performance of substation grounding systems subjected to lightning and similar surge currents[J]. IEEE Transactions on Power Delivery, 1994, 9(3):1412-1420.
【5】YUAN J S, YANG H N, ZHANG L P, et al. Simulation of substation grounding grids with unequal-potential[J]. IEEE Transactions on Magnetics, 2000, 36(4):1468-1471.
【6】MA J, DAWALIBI F P. Analysis of grounding systems in soils with finite volumes of different resistivities[J]. IEEE Power Engineering Review, 2002, 22(3):63-64.
【7】刘云玲. 变电站接地网存在的问题及改造措施[J]. 腐蚀与防护, 2007, 28(9):473-475.
【8】耿进锋, 时洪飞. 变电站接地网腐蚀与防护技术进展[J]. 腐蚀与防护, 2009, 30(8):523-252.
【9】FERREIRA C A M, PONCIANO J A C, VAITSMAN D S, et al. Evaluation of the corrosivity of the soil through its chemical composition[J]. Science of Total Environment, 2007, 388(1/3):250-255.
【10】SCHASCHL E, MARSH G A. Some new views on soil corrosion[J]. Corrosion Engineering Digest, 1964, 13(4):168-173.
【11】伍远辉, 刘天模, 孙成. 酸雨作用下酸性土壤酸化过程中铜的腐蚀行为[J]. 四川大学学报, 2010, 42(1):119.
【12】YAN M C, SUN C, XU J, et al. Anoxic corrosion behavior of pipeline steel in acidic soils[J]. Industrial & Engineering Chemistry Research, 2014, 53(45):17615-17624.
【13】OSELLA A, FAVETTO A, LÓPEZ E. Currents induced by geomagnetic storms on buried pipelines as a cause of corrosion[J]. Journal of Applied Geophysics, 1998, 38(3):219-233.
【14】刘军, 杨道武, 吴道新, 等. 交流杂散电流对变电站接地装置腐蚀电化学行为的影响[J]. 材料保护, 2015, 48(10):45-47.
【15】刘智勇, 李晓刚, 杜翠薇, 等. 管道钢在土壤环境中应力腐蚀模拟溶液进展[J]. 油气储运, 2008, 27(4):34-39.
【16】WEI W, WU X Q, KE W, et al. Electrochemical corrosion behavior of thermal-sprayed stainless steel-coated Q235 steel in simulated soil solutions[J]. Journal of Materials Engineering and Performance, 2016, 25(2):518-529.
【17】王永红, 鹿中晖, 李英志, 等. 几种线缆金属材料的土壤腐蚀特性[J]. 材料保护, 2009, 42(8):69-72, 78, 9.
【18】林碧兰, 路新灜, 李龙. PHC管桩金属端头在土壤模拟液中的腐蚀行为[J]. 中南大学学报(自然科学版), 2011, 42(2):434-440.
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【23】潘大伟, 闫永贵, 高心心, 等. 高强钢与典型管系材料B10和TA2之间的电偶腐蚀及其电绝缘[J]. 腐蚀与防护, 2017, 38(8):589-592, 597.
【24】ZHANG X G, VALERIOTE E M. Galvanic protection of steel and galvanic corrosion of zinc under thin layer electrolytes[J]. Corrosion Science, 1993, 34(12):1957-1972.
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