Role of steel and zinc coating thickness in cut edge corrosion of coil coated materials in atmospheric weathering conditions; Part 1: Laboratory studyShow others and affiliations
2016 (English)In: Progress in organic coatings, ISSN 0300-9440, E-ISSN 1873-331X, Vol. 99, p. 356-364Article in journal (Refereed) Published
Abstract [en]
Cathode surface area and its ability to reduce oxygen controlled the rate of zinc dissolution and paint delamination from cut edges of hot dip galvanised steel sheets. Zinc corrosion products deposited on steel in atmospheric exposure conditions inhibited oxygen reduction decreasing galvanic current and zinc dissolution and paint delamination. The opposite effect was observed for iron corrosion products. The initial steel substrate and zinc coating thicknesses affected the availability of zinc ions for formation of the protective film.
Place, publisher, year, edition, pages
Elsevier B.V. , 2016. Vol. 99, p. 356-364
Keywords [en]
Atmospheric corrosion, Cathodic protection, Metal coatings, Organic coatings, Steel, Coated materials, Coatings, Corrosion, Delamination, Dissolution, Electrolytic reduction, Galvanizing, Paint, Thickness measurement, Weathering steel, Zinc, Atmospheric exposures, Coating thickness, Coil coated materials, Cut edge corrosion, Iron corrosion products, Laboratory studies, Weathering conditions, Zinc dissolution, Zinc coatings
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-40025DOI: 10.1016/j.porgcoat.2016.06.013Scopus ID: 2-s2.0-84977670019OAI: oai:DiVA.org:ri-40025DiVA, id: diva2:1359358
Note
Funding details: Alexander von Humboldt-Stiftung; Funding text 1: We gratefully acknowledge financial support of Member Research Consortium “Corrosion properties of coil-coated materials” . Martin Jourdier from ArcelorMittal, Teemu Saarnivuo and Per-Erik Augustsson from SSAB Europe, Dorothe Koberg from BASF Coatings, Dave Francis from Akzo Nobel and Philippe Picot from Henkel are thanked for providing the materials and assisting with paint application. Bernhard Strauss and Michaela-Schatzl-Linder of voestalpine are thanked for the micro-hardness measurements. S.V. Lamaka thanks Alexander von Humboldt foundation for the financial support via her Experienced Researcher Grant.
2019-10-092019-10-092023-05-16Bibliographically approved