Question
Download Solution PDFThe method of corrosion prevention that makes the metal (cathodic) negative relative to the solution and thus stops the anodic reaction and can be applied for considerable length of time, is known as:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
The method of corrosion prevention that makes the metal (cathodic) negative relative to the solution and thus stops the anodic reaction and can be applied for a considerable length of time, is known as Cathodic potential with applied potential.
Cathode protection with applied potential
The potential difference between the galvanic anode and the steel structure is not enough for protection to occur. These cases call for a power supply (rectifier) to generate larger potential differences to enable more current to flow to the protected structure.
The advantages of Cathode protection with applied potential are:
- Longer lasting anodes
- Higher current systems
- Greater system control
- Easy monitoring
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