Electrochemical Study of Anodized Titanium in Phosphoric Acid

Table 2

Electrochemical parameters for the electrical equivalent circuit obtained in Na₂SO₄ 0.1 M

(V)	χ × 10^3	R1 (Ω)	Qf × 10^6 (F×cm^−2)	a1 (α2)	Cf × 10^6 (F×cm^−2)	Rf (Ω)	Qdl × 10^6 (F × cm^−2)	a2 (α1)	Cdl × 10^6 (F×cm^−2)	Rct (Ω)	S3 ( Ω × s^−1/2)
20	25	35.33	1.28	0.92	0.6	745	29.80	0.42	132	101165	15011
25	50	30.07	1.22	0.90	0.58	1042	28.28	0.40	258	154531	23354
30	36	27.43	0.75	0.94	0.46	779	29.88	0.38	365	155282	36812
35	24	30.03	0.6	0.94	0.33	726	29.1	0.38	359	160000	61223