Fig. 5From: The Use of Electrochemical Techniques for the Characterization of the Corrosion Behavior of Sol–Gel-Coated MetalsSEM micrograph of AA2024-T3 pretreated with a ZrO2 sol–gel layer deposited from 0.4 M solution of inorganic precursor (two layers) (Reprinted from Prog Org Coatings, 72, Andreatta F, Paussa L, Lanzutti A, Rosero Navarro NC, Aparicio M, Castro Y, et al., Development and industrial scale-up of ZrO2 coatings and hybrid organic-inorganic coatings used as pre-treatments before painting aluminium alloys, 3–14, Copyright (2011), with permission from Elsevier)Back to chapter page