The effect of time evolution and timing of the electrochemical data recording of corrosion inhibitor protection of hot-dip galvanized steel

M. Meeusen, L. Zardet, A. M. Homborg, M. Lekka, F. Andreatta, L. Fedrizzi, B. Boelen, J. M.C. Mol, H. Terryn

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)
11 Downloads (Pure)

Abstract

In previous work, the importance of taking the time-domain into account when studying corrosion inhibitor-containing electrochemical systems was highlighted. In this work, odd random phase electrochemical impedance spectroscopy (ORP-EIS) is applied as the electrochemical tool to study the time-effect by the evaluation of the non-stationarities per frequency decade over time for the screening of different silica- and phosphate- based corrosion inhibitors for hot-dip galvanized steel and possible corrosion inhibitor synergism. This serves as the basis for the interpretation of the results obtained from different macroscopic electrochemical techniques such as potentiodynamic polarization (PP), open circuit potential (OCP) with superimposed linear polarization resistance (LPR), electrochemical impedance spectroscopy (EIS) and electrochemical noise (EN) measurements. The analysis of the time-domain shows that all systems have a system-specific ‘stabilization’ time which affects the interpretation of the results obtained from the macroscopic electrochemical techniques. Furthermore, these results indicate that all corrosion inhibitors tested exhibit corrosion protective action and that the combination of both silica-based corrosion inhibitors show synergistic action on hot-dip galvanized steel.

Original languageEnglish
Article number108780
Number of pages18
JournalCorrosion Science
Volume173
DOIs
Publication statusPublished - 2020

Keywords

  • Corrosion inhibitor
  • Electrochemistry
  • Methodology
  • ORP-EIS

Fingerprint

Dive into the research topics of 'The effect of time evolution and timing of the electrochemical data recording of corrosion inhibitor protection of hot-dip galvanized steel'. Together they form a unique fingerprint.

Cite this