Review Article
Tribocorrosion of Passive Materials: A Review on Test Procedures and Standards
Figure 8
Nyquist plots for impedance data and equivalent circuits used to fill each curve for a metal or alloy (a) without any coating, (b) without a coating showing diffusion of reactants, and (c) with a passive oxide layer or a porous coating on the surface.
(a) |
(b) |
(c) |