Research Article
3-Formylindole-4-aminobenzoic Acid: A Potential Corrosion Inhibitor for Mild Steel and Copper in Hydrochloric Acid Media
Table 6
Polarization parameters of copper specimens in 1 M HCl at 28°C in the absence and presence of 3FI4ABA.
| | | Tafel data | Linear polarization data | | (mM) | (mV/SCE) | (A/cm2) | (mV/dec) | (mv/dec) | | (Ohm) | |
| |
0
| −225 |
32.75
|
63
|
63
| — |
355
| — | |
0.2
| −191 |
8.76
|
95
|
50
|
72.3
|
1101
|
67.8
| |
0.5
| −259 |
7.43
|
99
|
60
|
77.3
|
1644
|
78.4
| |
0.7
| −252 |
6.57
|
101
|
63
|
79.8
|
1958
|
81.8
| |
0.8
| −200 |
5.6
|
111
|
63
|
82.9
|
2177
|
83.7
|
|
|
