Table 1 Potentiodynamic polarization parameters for bare copper and coated copper by Ni, Ni-G, Ni-MA, and Ni-G-MA in 0.5 M NaCl solution.
Deposit | − Ecorr (mV) | βa | − βc | icorr (µA cm−2) | %P |
|---|---|---|---|---|---|
mV decade−1 | mV decade−1 | ||||
Bare copper | 111.1 | 42.1 | 186.2 | 12.91 | – |
Copper + Ni | 124.7 | 48.7 | 177.4 | 5.01 | 61.2 |
Copper + Ni-G | 136.2 | 77.3 | 166.8 | 3.79 | 70.6 |
Copper + Ni-MA | 135.1 | 80.7 | 116.0 | 1.06 | 91.8 |
Copper + Ni-G-MA | 134.8 | 89.3 | 227.8 | 0.93 | 92.8 |