Research Article

Corrosion Behaviors of Microarc Oxidation Coating and Anodic Oxidation on 5083 Aluminum Alloy

Table 5

Fitting results of the equivalent circuit obtained by fitting the EIS data.

Time (days)Rs (Ω·cm−2)Y0 (Ω−1·sn·cm−2)nRpore (Ω·cm−2)Cdl (F·cm−2)Rp (Ω·cm−2)W (s−0.5 Ω·cm−2)

14.327.57 × 10−50.944.38 × 1021.57 × 10−59.81 × 1053.89 × 10−2
125.616.42 × 10−50.924.05 × 1022.44 × 10−57.65 × 1054.77 × 10−2
326.357. 70 × 10−50.913.89 × 1021.84 × 10−57.03 × 1056.25 × 10−2
634.286.82 × 10−50.893.45 × 1022.06 × 10−56.41 × 1057.03 × 10−2