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The effect of ceria and zirconia nanoparticles on the corrosion behaviour of cataphoretic epoxy coatings on AA6060 alloy

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2019
Authors
Živković, Ljiljana S.
Jegdić, Bore
Andrić, Velibor
Rhee, Kyong-yop
Bajat, Jelena
Mišković-Stanković, Vesna
Article (Published version)
,
Elsevier
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Abstract
In this work an attempt was made to produce epoxy coating doped with ceria (CeO2) and/or zirconia (ZrO2) nanoparticles, in single step electrophoretric deposition process. Deposition was carried out on AA6060 cataforetically from epoxy resin suspension containing synthesized stable aqueous colloidal dispersions (sols) of CeO2 and ZrO2. The influence of ceria and zirconia nanoparticles on the physicochemical characteristics of epoxy coatings was evaluated by energy dispersive X-ray fluorescence spectroscopy, X-ray photoelectron spectroscopy, field-emission scanning electron microscopy, Fourier-transform infrared spectroscopy, thermogravimetric analysis and adhesion measurements, while their corrosion stability during immersion in 0.5 M NaCl solution was monitored by electrochemical impedance spectroscopy. All ceria and/or zirconia containing coatings showed better corrosion stability and adhesion than pure epoxy coating, while between doped epoxy coatings one with CeO2/ZrO2 exhhibited t...he greatest values of charge-transfer resistance due to synergetic effect of both types of added nanoparticles.

Keywords:
Epoxy coating / Ceria nanoparticles / Zirconia nanoparticles / Aluminium / Cataphoretic deposition / Corrosion / EIS
Source:
Progress in Organic Coatings, 2019, 105219-
Publisher:
  • Elsevier
Projects:
  • Synthesis, processing and applications of nanostructured multifunctional materials with defined properties (RS-45019)
  • Synthesis, processing and characterization of nanostructured materials for application in the field of energy, mechanical engineering, environmental protection and biomedicine (RS-45012)
  • Basic Science Research Program of the Ministry of Education, Science and Technology of Korea [grant number 2018R1A2B5A02023190]

DOI: 10.1016/j.porgcoat.2019.105219

ISSN: 0300-9440

WoS: 000490030200039

Scopus: 2-s2.0-85069739234
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URI
http://cer.ihtm.bg.ac.rs/handle/123456789/3060
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