Title
Investigating the influence of pigmentation on the electrolyte transport properties of organic coatings using ORP-EIS
Author
Madelat, Negin (Vrije Universiteit Brussel)
Wouters, Benny (Vrije Universiteit Brussel)
Visser, Peter (Akzo Nobel)
Jiryaeisharahi, Zahra (Vrije Universiteit Brussel)
Marcoen, Kristof (Vrije Universiteit Brussel)
Abrahami, S.T. (TU Delft Team Shoshan Abrahami) 
Hubin, Annick (Vrije Universiteit Brussel)
Terryn, H.A. (Vrije Universiteit Brussel)
Hauffman, Tom (Vrije Universiteit Brussel)
Date
2024
Abstract
In this work, the correlation between electrolyte transport properties and the variation of pigment volume concentration (PVC) in a series of organic coatings is explored. Using an odd random phase electrochemical impedance spectroscopy (ORP-EIS) approach, the diffusion of ions independent from water take-up is analysed. A higher PVC resulted in a more homogeneous coating morphology, which could be associated with a faster diffusion of ions following a Fickian regime and enhanced water uptake. In the case of lower pigment loading, the obtained heterogenous morphology of the coating introduced new challenges to the physical interpretation of the proposed electrochemical equivalent circuit.
Subject
GDOES
Ion diffusion
Organic coating
ORP-EIS
Water uptake
To reference this document use:
http://resolver.tudelft.nl/uuid:8509576d-038d-475b-a89d-f913de6ec826
DOI
https://doi.org/10.1016/j.corsci.2023.111699
Embargo date
2024-05-22
ISSN
0010-938X
Source
Corrosion Science: the journal on environmental degradation of materials and its control, 227
Bibliographical note
Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.
Part of collection
Institutional Repository
Document type
journal article
Rights
© 2024 Negin Madelat, Benny Wouters, Peter Visser, Zahra Jiryaeisharahi, Kristof Marcoen, S.T. Abrahami, Annick Hubin, H.A. Terryn, Tom Hauffman