Table 9 The fitted impedance parameters for copper after 72 h of immersion in 0.6 M NaCl without and with 60 ppm of the inhibitor.
Type of inhibitor | Rs (Ω) | Rct (Ω cm2) | Qct | Rads (KΩ cm2) | Qct | ||
|---|---|---|---|---|---|---|---|
Y(µΩ−1cm−2) | n | Y (µΩ−1cm−2) | n | ||||
Blank | 25.9 | 693 | 1910 | 0.50 | 0.876 | 45.4 | 0.90 |
nBF | 26.0 | 1450 | 42.5 | 0.54 | 1.14 | 700 | 0.95 |
ME | 10.2 | 4.96 | 2720 | 0.50 | 0.834 | 0.061 | 0.99 |
QF | 4.83 | 7.31 | 341 | 0.70 | 0.972 | 878 | 0.95 |