Quote:
Originally posted by Since87
Eliminating the leakage path, seems the most practical solution wrt waterblocks. (Assuming protection beyond chemical corrosion inhibitors is desired.)
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Ok, maybe im not understanding you, but a galvanic cell operates on a simple principle, iirc:
two dissimilar metals in an aqueous solution that forms a salt bridge between them. If the two metals are then connected electrically via another path, then a galvanic cell is formed - assuming the potentials of the metals is far enough apart, etc.
i dont understand your use of "leakage path" - are you refering to the salt bridge that is formed? (metal ions....)
Because if you are, then dont worry - there arent that many metal ions in the water, and so the salt bridge will limit the current transfer.
Best way to prevent galvanic corrosion is to simply electrically isolate the two metals. You could also toss in a zinc anode as a sacrifice. Or, as i stated earlier, you can apply the potential voltage in reverse.