Skip to Main content Skip to Navigation
Journal articles

Influence of the microstructure on the corrosion behaviour of 2024 aluminium alloy coated with a trivalent chromium conversion layer

Abstract : The influence of 2024 aluminium alloy microstructure on the protective properties of trivalent chromium process (TCP) coatings was studied: samples aged at 190 °C were analysed by comparison to a T3 state. The surface Cu coverage after deoxidation was higher for long-aged samples because nanometer scale Cu-rich precipitates formed during ageing behaved as distinct electrochemical entities and contributed to the formation of copper deposits. The growth mechanisms and kinetics of TCP coatings were directly related to the surface Cu coverage: thicker but more defective TCP coatings formed on long-aged samples leading to the lowest anti-corrosion properties.
Complete list of metadata

Cited literature [70 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-01989678
Contributor : Open Archive Toulouse Archive Ouverte (oatao) <>
Submitted on : Tuesday, January 22, 2019 - 3:01:28 PM
Last modification on : Friday, January 10, 2020 - 9:08:25 PM
Long-term archiving on: : Tuesday, April 23, 2019 - 4:19:23 PM

File

Saillard_21412.pdf
Files produced by the author(s)

Identifiers

Collections

Citation

Romain Saillard, Bernard Viguier, Grégory Odemer, Alessandro Pugliara, Benoit Fori, et al.. Influence of the microstructure on the corrosion behaviour of 2024 aluminium alloy coated with a trivalent chromium conversion layer. Corrosion Science, Elsevier, 2018, 142, pp.119-132. ⟨10.1016/j.corsci.2018.07.007⟩. ⟨hal-01989678⟩

Share

Metrics

Record views

32

Files downloads

118