galvanic anode

English

Noun

galvanic anode (plural galvanic anodes)

An anode used to protect buried or submerged metal structures from corrosion, made from a metal alloy with a more "active" voltage (more negative electrochemical potential) than the metal of the protected structure, so that the anode material corrodes and is consumed in preference to the structure.

Synonyms

sacrificial anode

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