Table 9 Potentiodynamic polarization results of carbon steel (CS), Ni-P and Ni-P-Y2O3 nanocomposite coatings (0.25 g/L to 0.75 g/L).
Samples | Ecorr (V) | icorr (µA cm2) | βc (V/decade) | βa (V/decade) | Rp (Ωcm2) | (PE%) |
---|---|---|---|---|---|---|
CS | -0.55 | 43.00 | -0.43 | 0.11 | 937 | – |
Ni-P | -0.32 | 23.6 | -0.16 | 0.15 | 1432 | 45.11 |
0.25 g/L | -0.29 | 15.3 | -0.14 | 0.21 | 2251 | 64.42 |
0.50 g/L | -0.25 | 13.9 | -0.13 | 0.19 | 2437 | 67.67 |
0.75 g/L | -0.18 | 7.41 | -0.093 | 0.11 | 5813 | 82.76 |