Tribocorrosion of Passive Materials: A Review on Test Procedures and Standards

Figure 9

Nyquist and Bode plots of the EIS measurements performed before (a,c,d) and during (b,d,f) sliding process, for a titanium alloy and a TaN-coated titanium alloy in PBS solution. A decrease in the resistance is observed due to wear processes in both titanium and TaN coatings, but the resistance of the coatings was an order of magnitude higher than for the uncoated alloy [73].

(a)

(b)

(c)

(d)

(e)

(f)