caa a22 4500 475815122 CHVBK 20180406123807.0 cr unu---uuuuu 170329e20000701xx s 000 0 eng 10.1023/A:1003947800813 doi (NATIONALLICENCE)springer-10.1023/A:1003947800813 Zinc impregnation of the anodic oxidation layer of 1050 and 2024 aluminium alloys [Elektronische Daten] [J-P. Dasquet, J-P. Bonino, D. Caillard, R.S. Bes] The porous oxide layer obtained by phosphoric anodic oxidation (PAO) of 1050 and 2024T3 aluminium alloys is modified by impregnation with zinc under alternating voltage. The resulting current against applied voltage relationship shows that a threshold voltage is required to deposit the zinc. Beyond a low critical voltage, V c L, zinc electrocrystallization starts near the barrier layer and grows with time through the porous oxide layer whatever the alloy used as substrate. For the 2024T3 alloy, beyond a high critical voltage V c H, S.I.M.S. analysis shows that zinc is also present on top of the oxide layer. The distribution of zinc particles depends on the porous layer morphology: formation of zinc needles in a columnar form (1050 alloy) and dispersion of zinc particles in a disorganized structure (2024T3 alloy). The polarization curves obtained in a 3 wt % NaCl solution show a decrease in anodic and cathodic currents indicating a protective effect of zinc impregnation, confirmed by electrochemical impedance analysis. Kluwer Academic Publishers, 2000 alternating voltage nationallicence aluminium alloys nationallicence anodic oxidation nationallicence corrosion nationallicence impregnation nationallicence zinc nationallicence Dasquet J-P Laboratoire de Chimie des Matériaux Inorganiques et Energétiques, Université Paul Sabatier, UMR CNRS no. 5070 118, Route de Narbonne, 31062, Toulouse cedex, France aut Bonino J-P Laboratoire de Chimie des Matériaux Inorganiques et Energétiques, Université Paul Sabatier, UMR CNRS no. 5070 118, Route de Narbonne, 31062, Toulouse cedex, France aut Caillard D. Centre d'Elaboration des Matériaux et d'Etudes Structurales, UP CNRS 8011, 29 rue Jeanne Marvig, BP 4347, 31055, Toulouse cedex, France aut Bes R.S. Laboratoire de Chimie des Matériaux Inorganiques et Energétiques, Université Paul Sabatier, UMR CNRS no. 5070 118, Route de Narbonne, 31062, Toulouse cedex, France aut Journal of Applied Electrochemistry Kluwer Academic Publishers 30/7(2000-07-01), 845-853 0021-891X 30:7<845 2000 30 10800 https://doi.org/10.1023/A:1003947800813 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1003947800813 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Dasquet J-P Laboratoire de Chimie des Matériaux Inorganiques et Energétiques, Université Paul Sabatier, UMR CNRS no. 5070 118, Route de Narbonne, 31062, Toulouse cedex, France aut NATIONALLICENCE 700 1- Bonino J-P Laboratoire de Chimie des Matériaux Inorganiques et Energétiques, Université Paul Sabatier, UMR CNRS no. 5070 118, Route de Narbonne, 31062, Toulouse cedex, France aut NATIONALLICENCE 700 1- Caillard D. Centre d'Elaboration des Matériaux et d'Etudes Structurales, UP CNRS 8011, 29 rue Jeanne Marvig, BP 4347, 31055, Toulouse cedex, France aut NATIONALLICENCE 700 1- Bes R.S. Laboratoire de Chimie des Matériaux Inorganiques et Energétiques, Université Paul Sabatier, UMR CNRS no. 5070 118, Route de Narbonne, 31062, Toulouse cedex, France aut NATIONALLICENCE 773 0- Journal of Applied Electrochemistry Kluwer Academic Publishers 30/7(2000-07-01), 845-853 0021-891X 30:7<845 2000 30 10800 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer