A guide to polarisation curve interpretation: deconstruction of experimental curves typical of the Fe/H2O/H+/O2 corrosion system

Determination and explanation of the pH-related critical fluoride concentration of pure titanium in acidic solutions using electrochemical methods

“…In contrast, at pH = 3.0$5.0 (Fig. 4(c) and (f), Region II), the cathodic processes are characterized by mass transfer instead of Tafel behaviors, which may due to the oxygen reduction reaction (ORR) [18]. The differences between the cathodic curves at Region I and Region II may be the main reason for the different @pF/@pH values shown in Fig.…”

“…3. In addition, quantitative analyses of the polarization curves must be conducted to acquire the electrochemical parameters, which involves the fitting of cathodic curves and the correction of apparent anodic curves [16,18]. Therefore, analyses should be performed on the cathodic curves first, and then the anodic curves.…”

Mass Transfer in the Electro-Dissolution of 90% Copper-10% Nickel Alloy in a Solution of Lithium Bromide

“…(Lee & Nobe, 1984, Fig 2, 4-5) claim that the anodic behavior in this region is an "apparent" Tafel behavior, since it doesn´t represent an activation controlled process. This idea is shared by other researchers, however, (Kato & Pickering, 1984;Pérez-Herranz et al, 2001) despite stating that for a slope of 60 mV/decade the anodic process is controlled by diffusion, determine the i corr by the Tafel extrapolation method (Fontana & Greene, 1978;Flitt & Schweinsberg, 2005), which is well known and often poorly implemented. Researchers often forget that the metal needs to corrode evenly, and in the corrosion potential the anodic and/or cathodic reactions must be under complete control by activation.…”

Microstructure, Wear, and Corrosion Characteristics of TiC-Laser Surface Cladding on Low-Carbon Steel

“…It represents the nature of the reaction at the corrosion potential, e.g., whether the metal is active, passive, or active/passive in the corrosion environment. It is well known [29][30][31][32][33] that when the potential is increased and the current is decreased, the polarization resistance is increased and the material show improved corrosion resistance. From Figure 13, the corrosion potential and current of the low-carbon steel substrate were À0.25 V and À5.8 A, respectively.…”