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Scanning Kelvin Probe assessment of steel corrosion protection by marine paints containing Zn-rich primer
RISE - Research Institutes of Sweden, Materials and Production, KIMAB. (Institut de la Corrosion)
RISE - Research Institutes of Sweden, Materials and Production, KIMAB. (Institut de la Corrosion)
RISE - Research Institutes of Sweden, Materials and Production, KIMAB. (Institut de la Corrosion)
2018 (English)In: Progress in organic coatings, ISSN 0300-9440, E-ISSN 1873-331X, Vol. 125, p. 61-72Article in journal (Refereed) Published
Abstract [en]

Zinc rich primers provide corrosion protection of steel constructions under heavy corrosive conditions such as offshore environments. In general, the paint contains different polymeric layers including the zinc-rich primer with a total thickness larger than 00 μm that significantly delays the degradation of the paint and the observation of corrosion failures. For prediction of corrosion failure and a quick ranking of paint systems, a new sensitive and non-invasive method for assessment has to be developed. Two commercial coatings with different corrosion protection ability were selected for the study. Scanning Kelvin Probe (SKP) was used to determine the sacrificial protection of steel by multilayer paint systems containing zinc rich primer during exposure to accelerated corrosion tests under atmospheric or under immersed conditions. Scanning Electron Microscopy - Energy Dispersive X-Ray Spectrometer (SEM-EDX) techniques were applied to analyse the cross sections after exposure. It is shown that SKP could quickly access the level of cathodic protection of the steel substrate underneath of industrial thick marine paints.

Place, publisher, year, edition, pages
Elsevier B.V. , 2018. Vol. 125, p. 61-72
Keywords [en]
Atmospheric corrosion, Marine paints, Sacrificial protection, Scanning Kelvin Probe, Zinc-rich primer, Cathodic protection, Noninvasive medical procedures, Paint, Probes, Scanning electron microscopy, Seawater corrosion, Spectrometers, Steel corrosion, X ray spectrometers, Zinc, Accelerated corrosion tests, Corrosive conditions, Energy dispersive x-ray spectrometers, Offshore environments, Scanning Kelvin probes, Zinc-rich primers, Corrosion resistant coatings
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Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-40480DOI: 10.1016/j.porgcoat.2018.08.024Scopus ID: 2-s2.0-85052617839OAI: oai:DiVA.org:ri-40480DiVA, id: diva2:1359908
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: 2019-10-10Bibliographically approved

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