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Effect of the synth...
Effect of the synthesis parameters of in situ grown Mg-Al LDHs on the filiform corrosion susceptibility of painted AA5005
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- Fedel, M. (author)
- Department of Industrial Engineering, University of Trento, via Sommarive 9, Trento, TN 38123, Italy
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- Zanella, Caterina (author)
- Jönköping University,JTH, Material och tillverkning
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- Ferrari, L. (author)
- Department of Industrial Engineering, University of Trento, via Sommarive 9, Trento, TN 38123, Italy
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- Deflorian, F. (author)
- Department of Industrial Engineering, University of Trento, via Sommarive 9, Trento, TN 38123, Italy
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(creator_code:org_t)
- Elsevier, 2021
- 2021
- English.
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In: Electrochimica Acta. - : Elsevier. - 0013-4686 .- 1873-3859. ; 381
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Novel layered double hydroxides (LDHs) based coatings developed in-situ on aluminum alloys are recognized to provide the substrate with improved corrosion protection. LDH layers have gained prominent attention due to their barrier properties and ions exchange capability, together with compositional flexibility and low environmental impact. In this work, diverse MgAl LDHs layers are developed on AA5005 as a surface conversion treatment prior to applying an acrylic clearcoat. The work aims to assess the potential LDH layers of to improve the filiform corrosion (FFC) resistance of the AA500 substrate. The effect of the synthesis time and the presence of urea on the FFC susceptibility are investigated. The performance of the different synthesis conditions was compared and shown to be more effective to increase FFC resistance when well-defined crystals are formed. The findings suggest that MgAl-LDHs mitigate the extent of filiform corrosion of acrylic paint coated AA5005. The FFC inhibition was found to be qualitatively proportional to the pitting potential measured over the LDHs conversion layers.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
Keyword
- AA5005
- Chemical conversion treatments
- Filiform corrosion (FFC)
- Layered double hydroxides (LDH)
- Aluminum coatings
- Aluminum corrosion
- Binary alloys
- Corrosion resistant coatings
- Environmental impact
- Magnesium alloys
- Surface treatment
- Urea
- Chemical conversion treatment
- Corrosion susceptibility
- Filiform corrosion
- Hydroxide layers
- Layered double hydroxide
- Layered-double hydroxides
- Mg-Al layered double hydroxide
- Synthesis parameters
- Aluminum alloys
Publication and Content Type
- ref (subject category)
- art (subject category)
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