Coating Terms

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Description
The electrode in an electrochemical circuit where oxidation reaction occurs.
Valuable metal objects, which need to be protected, are connected to electrochemically more active metals or alloys to construct a corrosion circuit. In that case, the active metal behaves as the anode and is depleted by corrosion at a certain rate. Meanwhile, the other metal is protected from corrosion. The material connected to the circuit to behave as the anode is called the sacrificial anode.