微區電化學技術在薄液膜大氣腐蝕中的應用

于陽; 盧琳; 李曉剛

doi:10.13374/j.issn2095-9389.2018.06.001

微區電化學技術在薄液膜大氣腐蝕中的應用

doi: 10.13374/j.issn2095-9389.2018.06.001

北京科技大學腐蝕與防護中心, 北京 100083

基金項目:

國家自然科學基金資助項目(U1560104)

詳細信息

中圖分類號: O646.6;TB304
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出版歷程
- 收稿日期: 2017-06-29

Application of micro-electrochemical technologies in atmospheric corrosion of thin electrolyte layer

Corrosion and Protection Center, University of Science and Technology Beijing, Beijing 100083, China

摘要

摘要: 薄液膜大氣腐蝕的本質是吸附于金屬基體表面的水汽形成薄電解質液膜引起的金屬腐蝕現象.由于液膜很薄,無法滿足常規的三電極溶液測試體系要求,使得微區電化學技術在該領域得到廣泛的應用.本文對比分析了用于薄液膜大氣腐蝕的電化學測試技術,著重介紹了掃描Kelvin探針、絲束電極、微液滴電極等測試方法在薄液膜大氣腐蝕研究中的應用,并通過總結測試中涉及的關鍵參數揭示了薄液膜/液滴尺寸與腐蝕動力學過程的關系.最后提出了微區電化學方法在該領域應用目前存在的問題以及今后可進一步提升的可能.
- 大氣腐蝕 /
- 薄液膜 /
- 微區電化學 /
- 伏打電位 /
- 氧濃差極化 /
- 腐蝕微電池
Abstract: The atmospheric corrosion of a metal under a thin electrolyte layer is caused due to the adsorption of the thin electrolyte layer on metal surfaces. As the electrolyte layer is considerably thin, the application of a traditional three-electrode system is considerably difficult; therefore, localized electrochemical technologies are of great use in this field. Herein, different localized electrochemical techniques for atmospheric corrosion under a thin liquid film were discussed. In particular, the applications of scanning Kelvin probe microscopy, wire-beam electrodes, and micro-droplet electrodes were introduced and comprehensively explained. In addition, the key parameters of the tests, which show the relation between thin film/droplet size and corrosion kinetics, were summarized. Furthermore, the issues that currently exist in this field and the potential for improvement was proposed in this research.
- atmospheric corrosion /
- thin electrolyte layer /
- localized electrochemical technology /
- Volta potential /
- oxygen concentration polarization /
- corrosion microcell

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參考文獻(30)

[8]	Vuillemin B, Philippe X, Oltra R, et al. SVET, AFM and AES study of pitting corrosion initiated on MnS inclusions by microinjection. Corros Sci, 2003, 45(6):1143
[9]	Vignal V, Krawiec H, Heintz O, et al. The use of local electrochemical probes and surface analysis methods to study the electrochemical behaviour and pitting corrosion of stainless steels. Electrochim Acta, 2007, 52(15):4994
[10]	Yan M C, Gelling V J, Hinderliter B R, et al. SVET method for characterizing anti-corrosion performance of metal-rich coatings. Corros Sci, 2010, 52(8):2636
[11]	Simões A M, Fernandes J C S. Studying phosphate corrosion inhibition at the cut edge of coil coated galvanized steel using the SVET and EIS. Prog Organ Coat, 2010, 69(2):219
[13]	Annergren I, Zou F, Thierry D. Application of localised electrochemical techniques to study kinetics of initiation and propagation during pit growth. Electrochim Acta, 1999, 44(24):4383
[14]	Zou F, Thierry D. Localized electrochemical impedance spectroscopy for studying the degradation of organic coatings. Electrochim Acta, 1997, 42(20-22):3293
[15]	Jorcin J B, Aragon E, Merlatti C, et al. Delaminated areas beneath organic coating:a local electrochemical impedance approach. Corros Sci, 2006, 48(7):1779
[16]	Bastos A C, Simoes A M, González S, et al. Application of the scanning electrochemical microscope to the examination of organic coatings on metallic substrates. Prog Organ Coat, 2005, 53(3):177
[17]	Gabrielli C, Joiret S, Keddam M, et al. A SECM assisted EQCM study of iron pitting. Electrochim Acta, 2007, 52(27):7706
[18]	Fushimi K, Takabatake Y, Nakanishi T, et al. Microelectrode techniques for corrosion research of iron. Electrochim Acta, 2013, 113:741
[19]	Jönsson M, Thierry D, LeBozec N. The influence of microstructure on the corrosion behaviour of AZ91D studied by scanning Kelvin probe force microscopy and scanning Kelvin probe. Corros Sci, 2006, 48(5):1193
[20]	Liu W J, Cao F H, Chen A N, et al. Corrosion behaviour of AM60 magnesium alloys containing Ce or La under thin electrolyte layers. Part 1:microstructural characterization and electrochemical behaviour. Corros Sci, 2010, 52(2):627
[21]	Davoodi A, Esfahani Z, Sarvghad M. Microstructure and corrosion characterization of the interfacial region in dissimilar friction stir welded AA5083 to AA7023. Corros Sci, 2016, 107:133
[22]	Stratmann M. The investigation of the corrosion properties of metals, covered with adsorbed electrolyte layers-a new experimental technique. Corros Sci, 1987, 27(8):869
[24]	Stratmann M, Streckel H. On the atmospheric corrosion of metals which are covered with thin electrolyte layers-I. Verification of the experimental technique. Corros Sci, 1990, 30(6-7):681
[25]	Stratmann M, Streckel H, Kim K T, et al. On the atmospheric corrosion of metals which are covered with thin electrolyte layers-Ⅲ. The measurement of polarisation curves on metal surfaces which are covered by thin electrolyte layers. Corros Sci, 1990, 30(6-7):715
[27]	Frankel G S, Stratmann M, Rohwerder M, et al. Potential control under thin aqueous layers using a Kelvin Probe. Corros Sci, 2007, 49(4):2021
[28]	Fu A Q, Tang X, Cheng Y F. Characterization of corrosion of X70 pipeline steel in thin electrolyte layer under disbonded coating by scanning Kelvin probe. Corros Sci, 2009, 51(1):186
[29]	Zhong Q D. Study of corrosion behaviour of mild steel and copper in thin film salt solution using the wire beam electrode. Corros Sci, 2002, 44(5):909
[30]	Liu Z J, Wang W, Wang J, et al. Study of corrosion behavior of carbon steel under seawater film using the wire beam electrode method. Corros Sci, 2014, 80:523
[32]	Tsuru T, Tamiya K I, Nishikata A. Formation and growth of micro-droplets during the initial stage of atmospheric corrosion. Electrochim Acta, 2004, 49(17-18):2709
[35]	Dubuisson E, Lavie F, Dalard F, et al. Study of the atmospheric corrosion of galvanised steel in a micrometric electrolytic droplet. Electrochem Commun, 2006, 8(6):911
[36]	Jiang J, Wang J, Lu Y H, et al. Effect of length of gas/liquid/solid three-phase boundary zone on cathodic and corrosion behavior of metals. Electrochim Acta, 2009, 54(5):1426
[37]	Li S X, Hihara L H. Atmospheric-corrosion electrochemistry of NaCl droplets on carbon steel. J Electrochem Soc, 2012, 159(11):C461
[38]	Cheng Q L, Zhang W H, Tao B. Investigation of the electrochemical corrosion of copper under a micrometric electrolyte droplet using a three-electrode system. Acta Phys Chim Sin, 2015, 31(7):1345
[39]	Nishikata A, Ichihara Y, Hayashi Y, et al. Influence of electrolyte layer thickness and pH on the initial stage of the atmospheric corrosion of iron. J Electrochem Soc, 1997, 144(4):1244
[41]	Krawiec H, Vignal V, Akid R. Numerical modelling of the electrochemical behaviour of 316L stainless steel based upon static and dynamic experimental microcapillary-based techniques. Electrochim Acta, 2008, 53(16):5252
[42]	Birbilis N, Padgett B N, Buchheit R. Limitations in microelectrochemical capillary cell testing and transformation of electrochemical transients for acquisition of microcell impedance data. Electrochim Acta, 2005, 50(16-17):3536
[43]	Tan Y J, Liu T, Aung N N. Novel corrosion experiments using the wire beam electrode:(Ⅲ) Measuring electrochemical corrosion parameters from both the metallic and electrolytic phases. Corros Sci, 2006, 48(1):53
[44]	Liu T, Tan Y J, Lin B Z M, et al. Novel corrosion experiments using the wire beam electrode. (IV) Studying localised anodic dissolution of aluminium. Corros Sci, 2006, 48(1):67