Research Article
Evaluation of Corrosion Inhibition Efficiency of Aluminum Alloy 2024 by Diaminostilbene and Azobenzene Schiff Bases in 1 M Hydrochloric Acid
Table 3
PDP parameters of N,N
-bis(salicylidine)-4,4
–diaminostilbene (SDS) and N,N
-bis(salicylidine)-4,4’–diaminoazobenzene(SDA).
| Tafel data |
| Inhibitor | Concentration (ppm) | OCP (mV) | - (mV vs. SCE) | (mA cm-2) | (mV dec-1) | (mV dec-1) | μp% | SDS | 0 | -796.5 | 741 | 4.091 | 179 | 65 | — | 25 | -805.8 | 769 | 1.105 | 201 | 68 | 73 | 50 | -810.6 | 778 | 1.023 | 209 | 69 | 75 | 75 | -815.9 | 781 | 0.859 | 212 | 72 | 79 | 100 | -821.8 | 790 | 0.736 | 215 | 74 | 82 | SDA | 25 | -810.9 | 780 | 0.941 | 211 | 76 | 77 | 50 | -817.3 | 785 | 0.859 | 214 | 78 | 79 | 75 | -818.8 | 788 | 0.736 | 216 | 82 | 82 | 100 | -823.2 | 792 | 0.532 | 221 | 89 | 87 |
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