Sacrificial anodes are made of a metal that is more electrically reactive than the other metal they are protecting, typically zinc or magnesium. When attached to a metal structure, such as a boat hull or a fishing vessel, the sacrificial anode will corrode in preference to the protected metal. This process is known as galvanic corrosion. By sacrificing itself, the anode prevents the protected metal from corroding. The sacrificial anode essentially attracts the corrosion away from the important metal components, acting as a barrier against rust and deterioration.

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Corrosion Prevention Sacrificial Anodes Galvanic Corrosion Metal Protection