Characterisation of Short Time Marine Corroded Surfaces
Journal Title
Journal of the Electrochemical Society
ISSN
0013-4651
Publisher
IOP Publishing
Volume
166
Number
C509
Language
English
Type
Article
This Version
AM
Metadata
Show full item recordCitation
Poon, J., Collins, S., Madden, D., Sonke, H., & Clarke, S. (2019). Characterisation of Short Time Marine Corroded Surfaces. Journal of the Electrochemical Society, 166 (C509)https://doi.org/10.1149/2.0931914jes
Abstract
This work investigates the corrosion of offshore structural steel surfaces over particularly short timescales. The focus is on the short-term effects between surface treatment and coating application (typically several hours). Offshore structures are exposed to an aggressive marine environment, where substrates will be contaminated by aerosols containing salts within hours, even under mild weather conditions. Localised corrosion studies of the anodic and cathodic regions of S355 steel surfaces undergoing salt drop corrosion are characterised. Significantly, the corrosion products are found to grow rapidly and are inhomogeneous, porous, and amorphous. They evolve to higher oxidation state oxides quickly with corrosion time. Therefore, microscopic corrosion products will form on newly exposed substrates in marine environments, even before the protective paint is applied.
Keywords
steel, corrosion, seawater, electron energy loss spectroscopy, X-ray photoelectron spectroscopy
Sponsorship
Royal Dutch Shell
Identifiers
External DOI: https://doi.org/10.1149/2.0931914jes
This record's URL: https://www.repository.cam.ac.uk/handle/1810/297339
Rights
All rights reserved