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Originally Posted by Titan151
Ha,
You’re joking right.
Just in case you aren't here is a refresher course from a Jr. High science class.
- Electrochemical corrosion involves the transfer of electrons across a metal/electrolyte interface. Corrosion occurs within a corrosion cell. A corrosion cell consists of four parts.
Anode
Cathode
Electrolyte
Metallic Path
Here is a pic to make this easier. I have even named several items. If there is no metallic path there will be no corrosion cell between the Cu block and Al rad. As for a corrosion cell within the rad, the same exact info applies. Except now the anode and cathode are two sections of the Aluminum that no longer share the same potential. This sets up a potential imbalance between the two sections that creates current flow, which leads to corrosion. Since the electrolyte in this case is relatively high in resistivity, the amount of current flow will be minimized.
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Correcto-mundo, my dear watson! I don't think everybody in this forum was awake for Junior High Science class. Ooooohhhhh, somebody stop me!
No, seriously that's what I was saying on the thread above...........without the pictures..........and the metallic path.............and um...........the current flow thing.
Yeah.