Fig. 31
Equivalent circuit to model pretreated samples topcoated with polyester spray resin (the thickness of the topcoat was 20 μm for all samples) (Reprinted from Electrochim Acta, 52, Andreatta F, Aldighieri P, Paussa L, Di Maggio R, Rossi S, Fedrizzi L, Electrochemical behaviour of ZrO2 sol-gel pre-treatments on AA6060 aluminium alloy, 7545–7555, Copyright (2007), with permission from Elsevier)