Improved potentiometric SECM imaging of galvanic corrosion reactions

D. Filotás, B. M. Fernández-Pérez, J. Izquierdo, A. Kiss, L. Nagy, G. Nagy, R. M. Souto

Research output: Article

9 Citations (Scopus)

Abstract

The galvanic corrosion of Zn-Cu systems has been monitored in situ using scanning electrochemical microscopy in the potentiometric mode. Here, the initial studies performed using double-barrel microelectrodes for the simultaneous detection of local pH and Zn ion concentration changes in single lines scans, have been extended to the obtention of 2-D maps of Cu2+ and Zn2+ ions. The construction and calibration of a novel Cu2+ ion selective microelectrode is reported. New scanning algorithms and data evaluation tools have been explored for faster acquisition rates than those limited by the time constants associated to potentiometric response.

Original languageEnglish
Pages (from-to)136-145
Number of pages10
JournalCorrosion Science
Volume129
DOIs
Publication statusPublished - dec. 1 2017

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ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Science(all)

Cite this

Filotás, D., Fernández-Pérez, B. M., Izquierdo, J., Kiss, A., Nagy, L., Nagy, G., & Souto, R. M. (2017). Improved potentiometric SECM imaging of galvanic corrosion reactions. Corrosion Science, 129, 136-145. https://doi.org/10.1016/j.corsci.2017.10.006