Electrochemical Characterization of an Oil/Water Alternately Wetted Rotating Cylinder Electrode

Linxiao Zheng; Zi Ming Wang; Guang-Ling Song

doi:10.5006/3638

journal article Nov 08, 2020

Electrochemical Characterization of an Oil/Water Alternately Wetted Rotating Cylinder Electrode

Linxiao Zheng Zi Ming Wang Guang-Ling Song

Corrosion Vol. 77 No. 1 pp. 72-84 · Association for Materials Protection and Performance (AMPP)

View at Publisher Save 10.5006/3638

Abstract

To characterize the corrosion at oil/water interfaces, a vertically adjustable rotating cylinder electrode (VA-RCE) was developed based on the concept of an “alternate wetting cell,” in which the electrochemical current reflecting the wet state of the RCE surface can be continuously monitored. Under a sinusoidal moving mode, the current waveform varied with the rotation rate and the longitudinal displacement speed or amplitude of the VA-RCE, implying that the dynamic wetting behavior of the VA-RCE surface in the oil/water interface region was influenced by the flow conditions; the replacement of oil phase by water phase became easier with increasing flow rate and alternating frequency of change between water wet and oil wet. The results also indicated that the wettability of the VA-RCE surface could be modified by the formation of corrosion products. All of the results suggested that the VA-RCE could be used to quantitatively characterize the dynamic water/oil wetting state and the corrosion at an oil/water interface in a multiphase flow.

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Details

Published: Nov 08, 2020
Vol/Issue: 77(1)
Pages: 72-84

Authors

L

Linxiao Zheng

*Center for Marine Materials Corrosion and Protection, College of Materials, Xiamen University, No. 422 Siming South Road, Xiamen 361005, People’s Republic of China.

Z

Zi Ming Wang

*Center for Marine Materials Corrosion and Protection, College of Materials, Xiamen University, No. 422 Siming South Road, Xiamen 361005, People’s Republic of China.

G

Guang-Ling Song

*Center for Marine Materials Corrosion and Protection, College of Materials, Xiamen University, No. 422 Siming South Road, Xiamen 361005, People’s Republic of China.; **State Key Laboratory of Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen 361005, China.; ***School of Mechanical and Mining Engineering, The University of Queensland, St. Lucia Qld 4072, Australia.

Cite This Article

Linxiao Zheng, Zi Ming Wang, Guang-Ling Song (2020). Electrochemical Characterization of an Oil/Water Alternately Wetted Rotating Cylinder Electrode. Corrosion, 77(1), 72-84. https://doi.org/10.5006/3638

Electrochemical Characterization of an Oil/Water Alternately Wetted Rotating Cylinder Electrode

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