Spatially-resolved imaging of concentration distributions on corroding magnesium-based materials exposed to aqueous environments by SECM

Ricardo M. Souto, András Kiss, Javier Izquierdo, Lívia Nagy, István Bitter, Géza Nagy

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

The spatial resolution of Mg2 + release from magnesium and its alloys during exposure to aqueous environments has been imaged using a new, solid contact, micropipette-based magnesium-ion selective electrode employed as potentiometric tip in SECM. The detection of metal dissolution is a crucial factor to detect the local microelectrodes established on the surface of the metal, and distinguish the processes related to anodic and cathodic half-cell reactions. Concentration distribution images have been obtained for the magnesium-based alloy AZ63 when galvanically coupled to pure iron during exposure to 1 mM NaCl solution.

Original languageEnglish
Pages (from-to)25-28
Number of pages4
JournalElectrochemistry Communications
Volume26
Issue number1
DOIs
Publication statusPublished - Jan 1 2013

    Fingerprint

Keywords

  • Corrosion
  • Ion-selective microelectrodes
  • Magnesium dissolution
  • Scanning electrochemical microscopy

ASJC Scopus subject areas

  • Electrochemistry

Cite this