Table 3.
Summary table of the Tafel analysis for uncoated aluminum substrate (7075-T6) and coated PVDF-HFP electrospun coatings, which correspond to Figure 14b (Sx) and Figure 14d (SxG). All the samples of this study have been tested in 6 wt% NaCl aqueous solution.
| Sample | Voltage (KV) | Flow Rate (µL/h) | Jcorr (nA/cm2) | Ecorr (V) | Corrosion Rate (µm/year) | βa (V/dec) | βc (V/dec) | η (%) |
|---|---|---|---|---|---|---|---|---|
| Al ref | 0 | 0 | 504.210 | −0.71 | 15,902.00 | 0.01 | 0.26 | 0 |
| S1 | 13.2 | 500 | 29.814 | −1.07 | 940.29 | 0.15 | 0.09 | 94.087 |
| S2 | 15.3 | 1000 | 1.182 | −0.73 | 37.28 | 1.15 | 0.94 | 99.766 |
| S3 | 17.7 | 2000 | 0.142 | −0.73 | 4.46 | 0.44 | 0.24 | 99.972 |
| S4 | 19.5 | 3000 | 0.059 | −0.61 | 1.86 | 0.01 | 0.18 | 99.988 |
| S5 | 20.5 | 5000 | 0.039 | −0.60 | 1.24 | 1.28 | 0.39 | 99.992 |
| SG ref | 0 | 0 | 34.415 | −0.95 | 1085.40 | 0.82 | 0.22 | 93.174 |
| S1G | 13.2 | 500 | 0.038 | −0.67 | 1.19 | 1.97 | 1.25 | 99.992 |
| S2G | 15.3 | 1000 | 0.077 | −0.75 | 2.42 | 0.01 | 0.05 | 99.985 |
| S3G | 17.7 | 2000 | 0.239 | −0.82 | 7.54 | 0.28 | 0.22 | 99.953 |
| S4G | 19.5 | 3000 | 0.297 | −0.75 | 9.38 | 0.07 | 0.13 | 99.941 |
| S5G | 20.5 | 5000 | 0.399 | −0.70 | 12.57 | 0.11 | 0.50 | 99.921 |