Which degradation process is addressed by cathodic protection?

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Multiple Choice

Which degradation process is addressed by cathodic protection?

Explanation:
Cathodic protection targets corrosion, which is the chemical degradation of a metal in an electrolyte due to electrochemical reactions. By making the protected metal act as the cathode—through sacrificial anodes or impressed current—the tendency for anodic dissolution is suppressed, so rusting or pitting reactions slow dramatically. This method specifically addresses electrochemical damage, not mechanical wear. Erosion, fatigue, and general wear come from physical processes like fluid impact, cyclic stress, or friction, which cathodic protection does not prevent.

Cathodic protection targets corrosion, which is the chemical degradation of a metal in an electrolyte due to electrochemical reactions. By making the protected metal act as the cathode—through sacrificial anodes or impressed current—the tendency for anodic dissolution is suppressed, so rusting or pitting reactions slow dramatically. This method specifically addresses electrochemical damage, not mechanical wear. Erosion, fatigue, and general wear come from physical processes like fluid impact, cyclic stress, or friction, which cathodic protection does not prevent.

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