Cathodic protection is an electrochemical technique to prevent metal corrosion.
It is used in pipelines, ships, and steel structures.
The protected metal surface becomes the cathode of an electrochemical cell.
This reduces the metal's corrosion rate.
Two main types:
Sacrificial anode systems: Use more reactive metals like zinc or magnesium.
Impressed current systems: Use an external power source to provide a protective current.
Extends the lifespan of infrastructure.
Ensures the integrity and safety of metal structures in corrosive environments.
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