Table 2 EIS parameters in equivalent circuit for the bare and coated 316 L systems
From: Study on cerium-doped nano-TiO2 coatings for corrosion protection of 316 L stainless steel
Samples | Rs(Ω) | Q 2 | R2(Ω) | Q 1 | R1(Ω) | ||
|---|---|---|---|---|---|---|---|
Y 0 | n | Y 0 | n | ||||
Bare 316 L | 31.22 | ― | ― | ― | 9.984 × 10−6 | 0.8635 | 1.803 × 105 |
TiO2 | 29.85 | 1.632 × 10−5 | 0.7882 | 8.797 × 102 | 5.368 × 10−5 | 0.8053 | 3.177 × 105 |
0.2%Ce-TiO2 | 30.63 | 1.738 × 10−7 | 0.7969 | 6.736 × 103 | 7.309 × 10−7 | 0.8541 | 3.905 × 106 |
1.2%Ce-TiO2 | 31.08 | 1.412 × 10−8 | 0.8376 | 4.853 × 104 | 1.952 × 10−7 | 0.8835 | 4.581 × 107 |
2.2%Ce-TiO2 | 29.92 | 1.979 × 10−5 | 0.7213 | 6.447 × 102 | 1.355 × 10−5 | 0.8223 | 1.495 × 106 |