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galvanic anodes

1. n. [Enhanced Oil Recovery]

Materials used to provide cathodic protection. Galvanic anodes are made of metals such as zinc, magnesium or aluminum, which corrode more easily than the structure, thus developing enough electric current flow through the electrolyte (such as soils or water). Galvanic anodes, also called sacrificial anodes, are commonly used when the current required for cathodic protection is small.

Alternate Form: sacrificial anode

See: cathodic protectionimpressed current anodes

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