Electrodeposition, Characterization, and Corrosion Stability of Nanostructured Anodic Oxides on New Ti-15Zr-5Nb Alloy Surface

Table 2

Fitting parameters of the two time constants electric equivalent circuit.

Ti-15Zr-5Nb	𝑅sol (Ω⋅cm^2)	𝑅𝑏 (Ω⋅cm^2)	CPE𝑏 (S⋅s^𝑛⋅cm^−2)	𝑛1	𝑅𝑝 (Ω⋅cm^2)	CPE𝑝 (S⋅s^𝑛⋅cm^−2)	𝑛2
Ringer pH = 3.21
Bare	14.2	7.3×10^6	2.2×10^−6	0.96	1.2×10^4	2.5×10^−5	0.90
Anodized	14.8	8.7×10^6	1.8×10^−6	0.98	1.5×10^4	2.6×10^−5	0.91
Ringer pH = 7.58
Bare	13.6	8.1×10^6	2.0×10^−6	0.97	1.8×10^4	2.1×10^−5	0.91
Anodized	15.1	9.9×10^6	1.6×10^−6	0.99	1.9×10^4	2.3×10^−5	0.93
Ringer pH = 8.91
Bare	14.5	6.2×10^6	2.3×10^−6	0.95	1.6×10^4	2.6×10^−5	0.90
Anodized	14.9	8.3×10^6	1.9×10^−6	0.97	1.7×10^4	2.7×10^−5	0.92