The Morphostructural, Compositional, and Electrochemical Characterization of Electrodeposited Nanolayers on a New Ti-15Ta-5Zr Alloy

Table 4

Impedance parameters for bare and anodic oxidized Ti-15Ta-5Zr alloy in Ringer solutions at 37°C.

Parameter	Ringer pH = 3.54		Ringer pH = 7.49		Ringer pH = 8.98
	Bare	Oxidized	Bare	Oxidized	Bare	Oxidized
𝑅sol (Ω·cm^2)	13.2	13.9	14.1	14.7	13.4	13.9
𝑅1 (Ω·cm^2)	7.9×10^6	8.5×10^6	8.7×10^6	9.9×10^6	7.5×10^6	8.3×10^6
CPE1 (S·s^𝑛/cm^2)	2.7×10^−6	1.7×10^−6	3.1×10^−6	1.5×10^−6	2.4×10^−5	1.9×10^−5
𝑛1	0.97	0.98	0.98	0.99	0.96	0.97
𝑅2 (Ω·cm^2)	1.6×10^4	1.8×10^4	2.1×10^4	2.5×10^4	1.8×10^4	2.1×10^4
CPE2 (S·s^𝑛/cm^2)	1.5×10^−5	1.2×10^−5	1.1×10^−5	1.0×10^−5	1.4×10^−5	1.2×10^−5
𝑛2	0.91	0.92	0.92	0.93	0.91	0.92