Development and application of the in situ radiotracer thin gapmethod for the investigation of corrosion processes. I. Adaptation ofthe thin gap method for the application of porous surfaces

Dávid Horváth, Kata Berkesi, Kálmán Varga, László Péter, Tibor Kovács, Renáta Buják, Tamás Pintérc

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The electrode lowering method of the in situ radiotracer technique provides a unique opportunity for theunderstanding of both the kinetics and the mechanism of contamination, corrosion and electrocatalyticphenomena. The advanced version of the technique, the thin gap method was originally developed for theinvestigation of sorption phenomena on smooth metal surfaces. This fact greatly limits the applicability ofthe method both with species of low specific activity and in case of surfaces of industrial specimens. As thefirst part of an article series the adaptation of the original method for the investigation of compact, poroussurfaces with high surface roughness is demonstrated. The basic equations of the improved methodare described, with the help of which the description of sorption phenomena on rough surfaces can becharacterized. The optimized preparation parameters of the porous platinum black layer for detectionof36Cl labelled chloride ions are given. It is shown that the sensitivity of the in situ thin gap radiotracermethod was substantially increased by the application of porous electrodes.

Original languageEnglish
Pages (from-to)468-474
Number of pages7
JournalElectrochimica Acta
Volume109
DOIs
Publication statusPublished - Jan 1 2013

Keywords

  • Adsorption
  • Corrosion
  • In situ radiotracer method
  • Porous electrodes

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Electrochemistry

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