Parts Shop

Anodes and Corrison protection

 

A galvanic anode is the main component of a galvanic cathodic protection (CP) system used to protect buried or submerged metal structures from corrosion.

They are made from a metal alloy with a more "active" voltage (more negative electrochemical potential) than the metal of the structure. The difference in potential between the two metals means that the galvanic anode corrodes, so that the anode material is consumed in preference to the structure.

The loss (or sacrifice) of the anode material gives rise to the alternative name of sacrificial anode.

 

We put anodes on our engines so that they corrode instead of your engine.  Anodes come in different metals.  The right anode depends on what metal you are protecting and what environment it will be in.