Sacrificial Anode

[Lunasly]

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Can someone explain to me how this works? I read up on it a bit, but I am confused about one aspect.

http://hyperphysics.phy-astr.gsu.edu/hbase/chemical/corrosion.html

So you want your sacrificial metal (sacrificial anode to protect the structural metal from corrosion) to have a lower reduction potential than the structural metal, thus making it more susceptible to corrosion? I understanding that having a lower reduction potential means a higher oxidation potential, thus oxidation of the sacrificial metal is more favorable relative to the structural metal.

Thanks for the help.