Fig. 36
Schemes of input signal for impedance measurements under voltage control (a) and current control (b) for a stable system (Reprinted from Prog Org Coatings, 69, Paussa L, Andreatta F, Aldighieri P, Fedrizzi L, Critical aspects in the electrochemical study of unstable coated metallic substrates, 225–234, Copyright (2010a), with permission from Elsevier)