Research Article
Study on the Electrochemical Performance of Sacrificial Anode Interfered by Alternating Current Voltage
Table 1
The corrosion electrochemical parameters from polarization curves of the sacrificed anode under different AC voltages.
| AC
voltage | Electrochemical parameters | 0d | 2d | 4d | 6d | 8d |
| | 0V | Polarization resistance
(Ω) | 659.3 | 731.1 | 820.4 | 940.8 | 1018.2 | Corrosion current
(A) | 6.53010−5 | 5.82510−5 | 5.16710−5 | 4.07210−5 | 3.87610−5 | Cathodic
Tafel slope | 6.340 | 5.813 | 5.082 | 4.458 | 5.049 | Anodic
Tafel slope | 3.760 | 4.396 | 5.175 | 5.174 | 5.97 |
| | 1V | Polarization resistance
(Ω) | 243.2 | 346.4 | 592.4 | 724.8 | 785 | Corrosion current
(A) | 1.81410−4 | 1.27910−4 | 7.55810−5 | 5.85810−5 | 5.60210−5 | Cathodic
Tafel slope | 5.021 | 4.788 | 4.621 | 4.413 | 4.774 | Anodic
Tafel slope | 4.834 | 5.027 | 5.091 | 5.826 | 5.113 |
| | 3V | Polarization resistance
(Ω) | 331.7 | 488.8 | 510.3 | 595.8 | 623.5 | Corrosion current
(A) | 1.25410−4 | 8.87110−5 | 7.96810−5 | 7.510−5 | 7.25310−5 | Cathodic
Tafel slope | 5.376 | 4.775 | 4.829 | 4.027 | 4.017 | Anodic
Tafel slope | 4.894 | 5.211 | 5.864 | 5.703 | 5.597 |
| | 5V | Polarization resistance
(Ω) | 228.5 | 245.3 | 298.7 | 378.2 | 431.6 | Corrosion current
(A) | 1.91410−4 | 1.81810−4 | 1.47610−4 | 1.17810−4 | 9.83810−5 | Cathodic
Tafel slope | 5.238 | 4.694 | 4.701 | 4.814 | 3.880 | Anodic
Tafel slope | 4.708 | 5.052 | 5.222 | 4.951 | 6.359 |
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