Table 4 Corrosion parameters of anodic oxidation films formed in the presence of various steps
| Â | One step | Two steps | Three steps | |
|---|---|---|---|---|
S1 | S2 | S3 | S4 | |
Ba | 17.12 | 22.75 8 | 56.317 | 111.89 |
Bc | 30.958 | 26.84 | 24.11 | 58.82 |
I0 (A/cm2) | 3.81E−07 | 1.76E−07 | 4.62E−7 | 3E−08 |
E0 | −0.57 | −0.60 | −0.64 | −0.69 |