Research Article
3-Formylindole-4-aminobenzoic Acid: A Potential Corrosion Inhibitor for Mild Steel and Copper in Hydrochloric Acid Media
Table 5
Potentiodynamic polarization parameters of MS 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
| −478 |
1062
|
106
|
78
| — |
18
| — | |
0.2
| −492 |
451
|
114
|
78
|
57.53
|
42
|
57
| |
0.5
| −482 |
64
|
101
|
64
|
93.97
|
265
|
93.2
| |
0.7
| −489 |
52
|
95
|
71
|
95.10
|
337
|
94.7
| |
0.8
| −491 |
22
|
87
|
66
|
97.93
|
733
|
97.5
|
|
|
