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Real-time monitoring of the degradation of metallic and organic coatings using electrical resistance sensors
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)
RISE - Research Institutes of Sweden, Materials and Production, KIMAB. (Institut de la Corrosion)
2017 (English)In: Materials and corrosion - Werkstoffe und Korrosion, ISSN 0947-5117, E-ISSN 1521-4176, Vol. 68, no 12, p. 1365-1376Article in journal (Refereed) Published
Abstract [en]

The development of new metallic coatings to protect steel, as well as the optimization of maintenance operations on site requires obtaining relevant corrosion data as function of the exposure conditions. In atmospheric and aggressive environments such as under accelerated corrosion tests or in coastal zones, electrical resistance (ER) sensors have demonstrated their ability to provide relevant real-time corrosion data. Among the sensors commercially available, only single material such as steel, zinc, copper are proposed. However, even if this allows obtaining interesting corrosion data for such reference materials, these data are not representative of industrial systems, such as galvanized steel. Indeed, zinc-based coatings can contain different alloying elements, e.g., aluminum and magnesium, which impact drastically their resistance to corrosion. In addition, with single material sensors, the influence of the galvanic coupling between the coating and the substrate, in the presence of a defect or a cut edge is not considered. In this study, hot dip galvanized, electrogalvanized, and painted steel ER sensors are exposed in accelerated corrosion tests. The results show that this method is very promising to (i) detect the red rust apparition; (ii) assess the corrosion resistance of industrial zinc and organic coatings; and (iii) obtain relevant data in real-time along the exposure time. 

Place, publisher, year, edition, pages
Wiley-VCH Verlag , 2017. Vol. 68, no 12, p. 1365-1376
Keywords [en]
AirCorr, corrosion, electrical resistance sensor, electrogalvanized, hot dip galvanized, monitoring, organic coating, real-time, zinc, Alloying elements, Aluminum coatings, Atmospheric corrosion, Coastal zones, Corrosion resistance, Electric resistance, Galvanizing, Zinc coatings, Electrical resistance sensors, Hot dips, Real time, Organic coatings
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-40008DOI: 10.1002/maco.201709655OAI: oai:DiVA.org:ri-40008DiVA, id: diva2:1359432
Note

 Funding details: EDA B-1114-GEM1-ERG; Funding details: State of New Jersey Economic Development Authority, B-1114-GEM1-ERG; Funding text 1: European Defense Agency, Grant number: EDA B-1114-GEM1-ERG; Funding text 2: The authors acknowledge DCNS Brest for paint application on the sensors, Deborah Le Berre (Institut de la Corrosion) for the follow-up of the accelerated tests. Part of the project was conducted within the Corrosion Control for Navy Ship (CCNS) project under the contract with European Defense Agency n° EDA B-1114-GEM1-ERG.

Available from: 2019-10-09 Created: 2019-10-09 Last updated: 2019-10-09Bibliographically approved

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