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Cathodic Protection
Cathodic Protection (CP) as defined by Peabody(1.) , is a technique used to control the corrosion of a metal surface by making it the cathode of an electrochemical cell.

The four necessary components of a differential corrosion cell are:
1. Anode
2. Cathode
3. Metallic path electronically connecting the anode to the cathode
4. Conductive electrolyte (soil, seawater, freshwater, etc...)


1. Peabody,s Control of Pipeline Corrosion second edition; A.W. Peabody; NACE International, Houston, Texas © 1967, 2001
2. Cathodic Protection second edition; John Morgan; NACE International, Houston, Texas © 1987, 1993

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