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Assessment of steel corrosion and deadhesion of epoxy barrier paint by scanning Kelvin probe
RISE - Research Institutes of Sweden (2017-2019), Materials and Production, KIMAB. (Institut de la Corrosion)
RISE - Research Institutes of Sweden (2017-2019), Materials and Production, KIMAB. (Institut de la Corrosion)ORCID iD: 0000-0002-1753-9972
RISE - Research Institutes of Sweden (2017-2019), Materials and Production, KIMAB. (Institut de la Corrosion)ORCID iD: 0000-0001-5462-2700
2018 (English)In: Progress in organic coatings, ISSN 0300-9440, E-ISSN 1873-331X, Vol. 114, p. 123-134Article in journal (Refereed) Published
Abstract [en]

Marine paints are complex polymeric systems containing layers of different nature that significantly delay the corrosion failures. In order to obtain a rapid ranking in the corrosion protection provided by the paints, it is important to apply sensitive and non-invasive methods for early detection of under paint corrosion. Scanning Kelvin Probe (SKP) was used to determine the mechanism(s) of corrosion and paint de-adhesion. This technique is sensitive to the metal-polymer interface and gives a quick assessment of cathodic delamination or anodic undermining. Depending on the type of exposure the mode of corrosion de-adhesion was evaluated and compared with SKP data obtained under polarization experiments by impressed current in aqueous electrolyte. After exposure, pull off test and Scanning Electron Microscopy – Energy Dispersive X ray Spectrometry (SEM-EDX technique) were applied to determine the paint adhesion stability around the defect and to analyse the steel-paint interface. 

Place, publisher, year, edition, pages
Elsevier B.V. , 2018. Vol. 114, p. 123-134
Keywords [en]
Corrosion deadhesion, Galvanic cells, Marine paints, Scanning Kelvin probe, SEM-EDX, Adhesion, Electrolytes, Noninvasive medical procedures, Paint, Polymers, Probes, Scanning electron microscopy, Deadhesion, Scanning Kelvin probes, Corrosion
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-40491DOI: 10.1016/j.porgcoat.2017.09.016Scopus ID: 2-s2.0-85031785992OAI: oai:DiVA.org:ri-40491DiVA, id: diva2:1359877
Note

Funding details: State of New Jersey Economic Development Authority, B-1114-GEM1-ERG; Funding text 1: The authors would like to thank the financial support of the sponsors of the project “ Corrosion Control for Navy Ships ” under EDA contract B-1114-GEM1-ERG.

Available from: 2019-10-10 Created: 2019-10-10 Last updated: 2023-05-26Bibliographically approved

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Le Bozec, NathalieThierry, Dominique

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