RT Journal Article
T1 PEO of pre-anodized Al–Si alloys: Corrosion properties and influence of sealings
A1 Mohedano Sánchez, Marta
A1 Matykina, Endzhe
A1 Arrabal Durán, Raúl
A1 Mingo, B.
A1 Pardo, Angel
AB Voltage-controlled PEO coatings were developed on A356 aluminum alloys (gravity-cast and rheocast) with a pre-anodized layer. The influence of the alloy manufacturing process and the effect of Si-rich phase on the structure and composition of the oxide layers were evaluated using SEM, EDS and XRD. The pre-anodized oxide layer preserves the microstructure of the substrate due to the presence of secondary phases that have a different behavior relative to the matrix during anodizing. PEO coatings consisted of a mixture of α-Al2O3, γ-Al2O3 and mullite. The corrosion behavior and the effectiveness of different sealing techniques based on salts of nickel, cobalt, cerium and phosphonic acid were also studied. Post-treatments improved the hydrophobic properties of the coatings and showed a beneficial effect, significantly increasing the coating impedance and thereby reducing the susceptibility to corrosion.
PB Elsevier
YR 2015
FD 2015-08-15
LK https://hdl.handle.net/20.500.14352/107293
UL https://hdl.handle.net/20.500.14352/107293
LA eng
NO M. Mohedano, E. Matykina, R. Arrabal, B. Mingo, A. Pardo, PEO of pre-anodized Al–Si alloys: Corrosion properties and influence of sealings, Applied Surface Science, Volume 346, 2015, Pages 57-67, ISSN 0169-4332, https://doi.org/10.1016/j.apsusc.2015.03.206.
DS Docta Complutense
RD 18 dic 2025