磁场对铁在含氯离子的碳酸钠溶液中阳极过程的影响
Effects of Magnetic Field on Anodic Process of Iron in Na2CO3 Solution Containing Chloride
摘 要
通过动电位极化和恒电位极化的方法，研究了磁场对铁在含氯离子的Na2CO3溶液中阳极过程的影响。结果表明：磁场会降低极化曲线钝化区内的电流密度；较低扫描速率下磁场使极化曲线过钝化区内的电流密度增大，较高扫描速率下磁场使过钝化区高电位区间内的电流密度降低；在极化曲线钝化区较低电位区间内，磁场会使电流密度降低；在钝化区较高电位区间内，磁场对电流密度的影响不明显；磁场对过钝化区阳极反应的加速效应随极化电位的升高而减弱。
铁
阳极过程
氯离子
magnetic field
iron
anodic process
chloride
Abstract
The effect of magnetic field on the anodic process of iron in Na2CO3 solution containing chloride was studied by means of potentiodynamic polarization and potentiostatic polarization. The results showed that the magnetic field reduced the current density in passivation zone of polarization curve. The magnetic field increased the current density in over-passivation zone of polarization curve at lower scanning rate, and decreased the current density in high potential range of over-passivation zone at higher scanning rate. The magnetic field reduced the current density in the lower potential range of passivation zone of polarization curve. In the higher potential range of passivation zone, the influence of magnetic field on current density was not obvious. The acceleration effect of magnetic field on anodic reaction in over-passivation zone decreased with the increase of polarization potential.
中图分类号 TG174 DOI 10.11973/fsyfh-202109011
所属栏目 试验研究
基金项目 国家自然科学基金（51571183）；国家重点研发计划（2017YFB0703002）
收稿日期 2020/2/18
修改稿日期
网络出版日期
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引用该论文: LING Sichun,CAI Shuangwei,SONG Xiaojuan,DONG Haiying,NING Fei,MA Jiarong,CUI Tongming,Lü Zhanpeng. Effects of Magnetic Field on Anodic Process of Iron in Na2CO3 Solution Containing Chloride[J]. Corrosion & Protection, 2021, 42(9): 55
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参考文献
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【3】HINDS G,COEY J M D,LYONS M E G. Influence of magnetic forces on electrochemical mass transport[J]. Electrochemistry Communications,2001,3(5):215-218.
【4】MONZON L M A,COEY J M D. Magnetic fields in electrochemistry:The Lorentz force.A mini-review[J]. Electrochemistry Communications,2014,42:38-41.
【5】RAGSDALE S R,GRANT K M,WHITE H S. Electrochemically generated magnetic forces.enhanced transport of a paramagnetic redox species in large,nonuniform magnetic fields[J]. Journal of the American Chemical Society,1998,120(51):13461-13468.
【6】MONZON L M A,COEY J M D. Magnetic fields in electrochemistry:The Kelvin force.A mini-review[J]. Electrochemistry Communications,2014,42:42-45.
【7】WANG C,CHEN S H,YU X L. Anodic dissolution of iron in a magnetic field with holographic microphotography[J]. Journal of the Electrochemical Society,1996,143(12):L283-L285.
【8】LU Z P,CHEN J M. Magnetic field effects on anodic polarisation behaviour of iron in neutral aqueous solutions[J]. British Corrosion Journal,2000,35(3):224-228.
【9】LU Z P,HUANG D L,YANG W,et al. Effects of an applied magnetic field on the dissolution and passivation of iron in sulphuric acid[J]. Corrosion Science,2003,45(10):2233-2249.
【10】LU Z P,HUANG D L,YANG W. Probing into the effects of a magnetic field on the electrode processes of iron in sulphuric acid solutions with dichromate based on the fundamental electrochemistry kinetics[J]. Corrosion Science,2005,47(6):1471-1492.
【11】LU Z P,HUANG C B,HUANG D L,et al. Effects of a magnetic field on the anodic dissolution,passivation and transpassivation behaviour of iron in weakly alkaline solutions with or without halides[J]. Corrosion Science,2006,48(10):3049-3077.
【12】LU Z P,SHOJI T,YANG W. Anomalous surface morphology of iron generated after anodic dissolution under magnetic fields[J]. Corrosion Science,2010,52(8):2680-2686.
【13】LI H J,XIONG Q,LU Z P,et al. A magnetic field induced undulated surface and the shift of the active/passivation transition threshold of iron in a sulfuric acid solution[J]. Corrosion Science,2017,129:179-191.
【14】LI H J,NING F,DONG H Y,et al. Effects of magnetic field on uneven dissolution of iron in sulfuric acid solution with chlorides[J]. Corrosion,2020,76(6):528-538.
【15】陈珍,吕战鹏,肖茜,等. 磁场对铁在含亚硝酸根的氯化钠溶液中不同电位下极化电流的影响[J]. 腐蚀与防护,2017,38(1):6-10,72.
【16】SUEPTITZ R,TSCHULIK K,UHLEMANN M,et al. Effect of high gradient magnetic fields on the anodic behaviour and localized corrosion of iron in sulphuric acid solutions[J]. Corrosion Science,2011,53(10):3222-3230.
【17】TANG Y C,DAVENPORT A J. Magnetic field effects on the corrosion of artificial pit electrodes and pits in thin films[J]. Journal of the Electrochemical Society,2007,154(7):C362.
【18】蔡爽巍,宁飞,唐元杰,等. 磁场对铁在不同电位高氯酸钠溶液中阳极溶解的影响[J]. 腐蚀与防护,2020,41(8):1-5,51.
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【20】EJAZ A,LU Z P,CHEN J J,et al. The effects of hydrogen on anodic dissolution and passivation of iron in alkaline solutions[J]. Corrosion Science,2015,101:165-181.
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