The influence of Ce-based coatings as pretreatments on corrosion stability of top powder polyester coating on AA6060

Živković, Ljiljana; Jegdić, Bore; Popić, J.P.; Bajat, Jelena B.; Mišković‐Stanković, Vesna

doi:10.1016/j.porgcoat.2013.04.017

Cited by 17 publications

(6 citation statements)

References 62 publications

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“…Corrosion and electrochemical characteristics of different aluminium alloys with and without protective coatings have been investigated by EIS technique [27][28][29][30][31]. In this work EIS measurements were performed in NaCl solution in the presence of atmospheric O 2 , in order to compare corrosion behaviour of different thermal states of the tested alloy.…”

Section: Electrochemical Propertiesmentioning

confidence: 99%

Corrosion properties of an aluminium alloy 7000 series after a new two step precipitation hardening

Jegdić¹,

Bobić²,

Gligorijević³

et al. 2014

Zas Mat

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Corrosion properties of an aluminium alloy 7000 series were investigated by different electrochemical methods. The alloy was subjected to the one-step and to a new two-step precipitation hardening. Polarization measurements in the 3.5 wt. % NaCl solution have shown a more positive value of the pitting potential (E pit ) and a higher corrosion resistance for the two-step aged alloy. The electrochemical impedance spectroscopy (EIS) has also shown that the two-step aged alloy has better corrosion properties (higher value of polarization resistance, R p , and lower value of double-layer capacitance, C dl ) comparing to the one-step aged alloy.

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Section: Electrochemical Propertiesmentioning

confidence: 99%

Corrosion properties of an aluminium alloy 7000 series after a new two step precipitation hardening

Jegdić¹,

Bobić²,

Gligorijević³

et al. 2014

Zas Mat

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“…Cerium belongs to the group of cathodic corrosion inhibitors for aluminium alloys. A large number of papers deal with the study of the inhibitory effect of cerium in the AA2024 alloy …”

Section: Introductionmentioning

confidence: 99%

Corrosion behaviour of AA2024 aluminium alloy in different tempers in NaCl solution and with the CeCl₃ corrosion inhibitor

Jegdić

Bobić

Linić

2019

Materials & Corrosion

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The paper analyses the corrosion behaviour of naturally and artificially aged AA2024 alloy in NaCl solution and in the presence of an environment‐friendly corrosion inhibitor, CeCl3. On the basis of the values of polarisation resistance and corrosion current density, the corrosion resistance of the protective inhibitor film is established as well as the general corrosion resistance of this aluminium alloy. Resistance to pit formation is determined based on the difference in pitting and corrosion potentials while resistance to pit growth is determined based on the amount of charge consumed during pit growth. A scanning electron microscope is used to examine the morphology of the pits formed during the pitting corrosion testing, as well as to determine the cerium content on intermetallic particles and the matrix AA2024 alloy. The corrosion behaviour of AA2024 alloy is investigated after different test periods in NaCl solution and in the same solution with the CeCl3 inhibitor. The corrosion resistance of both tempers of AA2024 alloy is more than one order of magnitude higher in the presence of CeCl3. An explanation of the observed differences in the corrosion behaviour of the naturally and artificially aged AA2024 alloy is proposed. Different corrosion behaviour of the alloy after different test periods is also explained.

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“…As a replacement for corrosion protection of aluminum alloys, the most perspective are cerium compounds either as inhibitors , or forming a surface layer , as cerium blocks the cathodic sites of substrates and suppresses the oxygen reduction reaction . Moreover, cerium was also proven to exhibit a self‐healing ability.…”

Section: Introductionmentioning

confidence: 99%

Corrosion stability of cerium-doped cataphoretic epoxy coatings on AA6060 alloy

Jegdić

Živković

Popić

et al. 2016

Materials and Corrosion

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In this study, corrosion protection efficiency of undoped epoxy and epoxy coating doped with cerium on aluminum alloy AA6060 is evaluated over prolonged exposure to 3 wt% NaCl solution by electrochemical impedance spectroscopy (EIS). Different amounts of Ce(NO3)3 are added into the epoxy suspension used for the cataphoretic deposition. Suspension stability is characterized by zeta potential and particle size values. Water content and thermal stability of the coatings were determined by thermogravimetric analysis. Insufficient corrosion stability, very close to that of undoped epoxy, is revealed for the coating with 1 mM Ce. Higher cerium doping contributes to a significant increase in corrosion stability (2–3 orders of magnitude greater charge‐transfer resistance). Epoxy coating doped with 5 mM Ce displays a pronounced self‐healing ability and the best corrosion protection and adhesion, owing to evenly distributed cerium precipitates on the aluminum surface. In the case of 10 mM Ce‐doped coating, the formation of Ce clusters and higher porosity causes a certain lowering of the protective ability. EIS measurements on epoxy coating with artificial defect confirm these findings.

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The influence of Ce-based coatings as pretreatments on corrosion stability of top powder polyester coating on AA6060

Cited by 17 publications

References 62 publications

Corrosion properties of an aluminium alloy 7000 series after a new two step precipitation hardening

Corrosion properties of an aluminium alloy 7000 series after a new two step precipitation hardening

Corrosion behaviour of AA2024 aluminium alloy in different tempers in NaCl solution and with the CeCl₃ corrosion inhibitor

Corrosion stability of cerium-doped cataphoretic epoxy coatings on AA6060 alloy

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The influence of Ce-based coatings as pretreatments on corrosion stability of top powder polyester coating on AA6060

Cited by 17 publications

References 62 publications

Corrosion properties of an aluminium alloy 7000 series after a new two step precipitation hardening

Corrosion properties of an aluminium alloy 7000 series after a new two step precipitation hardening

Corrosion behaviour of AA2024 aluminium alloy in different tempers in NaCl solution and with the CeCl3 corrosion inhibitor

Corrosion stability of cerium-doped cataphoretic epoxy coatings on AA6060 alloy

Contact Info

Product

Resources

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Corrosion behaviour of AA2024 aluminium alloy in different tempers in NaCl solution and with the CeCl₃ corrosion inhibitor