Research Article
Study on the Influence of Pulse Current Cathodic Protection Parameters of Oil Well Casing
Table 3
Corrosion experimental factors and levels.
| | | 1 | 2 | 3 | 4 | 5 | 6 |
| | Frequency (F) | 500 Hz (F1) | 1500 Hz (F2) | 2500 Hz (F3) | 3500 Hz (F4) | 4500 Hz (F5) | 5500 Hz (F6) | | Duty cycle (P) | 20% (P1) | 50% (P2) | 70% (P3) |
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