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What is a Sacrificial Anode? |
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A metal rod placed in a water heater tank to protect the tank from corrosion. Anodes of aluminum, magnesium, or zinc are the more frequently metals. The anode creates a galvanic cell in which magnesium or zinc will be corroded more quickly than the metal of the tank giving the tank a negative charge and preventing corrosion.
U.S. Department of Energy
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RE: What is a Sacrificial Anode?
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Post By maryam (Guest Post)
(10/20/2007)
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corrosion
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