Probing top-of-the-line corrosion using coupled multi-electrode array in conjunction with local electrochemical measurement

An experimental method has been developed for probing top-of-the-line corrosion (TLC) of pipeline steel based on the use of the wire beam electrode (WBE) in conjunction with local electrochemical measurements. Results show that the location of the droplet, the droplet retention time, the water conde...

Full description

Saved in:
Bibliographic Details
Published in:Npj Materials degradation 2023-03, Vol.7 (1), p.16-16, Article 16
Main Authors: Wang, Mingyu, Tan, Mike Yongjun, Zhu, Yesen, Huang, Yi, Xu, Yunze
Format: Article
Language:English
Subjects:
639/301/1023/1026
639/638/161/892
Carbon dioxide
Chemistry and Materials Science
Corrosion
Corrosion and Coatings
Corrosion cell
Corrosion inhibitors
Droplets
Electrochemistry
Electrodes
Gases
Iron carbonate
Materials Science
Pipelines
Reaction kinetics
Research methodology
Structural Materials
Structural steels
Tribology
Water film
Wire beam electrodes
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:An experimental method has been developed for probing top-of-the-line corrosion (TLC) of pipeline steel based on the use of the wire beam electrode (WBE) in conjunction with local electrochemical measurements. Results show that the location of the droplet, the droplet retention time, the water condensation rate and the local TLC rate could be well determined through the macro-cell current mapping and local electrochemical measurements. The precipitation and the scaling tendency of the FeCO 3 beneath the droplet were quantitatively estimated. The micro-cell corrosion was significantly influenced by the thickness of the condensed water film and the protectiveness of the FeCO 3 layer. The discrepancy of the film formation inside and outside the droplets was the driving force of macro-cell corrosion. The in-situ measurement and visualization of the corrosion processes and kinetics using the modified WBE could be conveniently used to facilitate the understanding of the initiation and propagation of localized TLC.
ISSN:2397-2106
2397-2106
DOI:10.1038/s41529-023-00332-x