Wireless galvanic corrosion

Wireless galvanic corrosion is a phenomenon that I have seen take place given a mechanical is moving the water. It seems to me the reason why this is possible is because the mechanical pump is allowing for the ions to move between the metals, and this allows for galvanic corrosion.

I think there are two different types, I think one type is when you have ions that can allow for conduction but no electron transporting species which forces the oxidation and redox to happen on the anode surface.

I think in circumstances where there are ample species in the water that allow for electrons shuttling you will get actual electrons to move from the anode to the cathode and deposit onto it.

Specifically when discussing copper and aluminum, I'm interested in what my experiments will show without any water movement cuz they will have a control where they are in a trough in stagnant sea water. It could be hypothesized that the copper will dissolve from the water and stick to the aluminum and create localized galvanic cells on the aluminum but I'm not sure if the aluminum is not actively oxidizing that the copper ions will stick to it and I'm interested to see if that's the case.

I am certain that in the trough with aluminum and copper and a pump moving the water that the aluminum will experience significant Mass loss and then the third trough where the aluminum will be by itself with a pump they will be considerably less Mass loss and we will have a third party company redoing these experiments and demonstrating that you can have wireless dissimilar metal galvanic corrosion if you have a pump allowing for the electrification of the system.

I'm interested to see what you guys will say about this because I haven't vented a new anode for outboard motors that stops them from corroding but that's because it stops the thermostat from interacting with the aluminum through the ions in the water even though it is electrically isolated or not making direct contact with the metal.

My anode sleeves the thermostat and provides enough sacrificial surface area to produce more current than the thermostat can take therefore polarizing the cathode and protecting the system and it would not be able to do that if the thermostat was not corroding the engine through the ions in the water.

We have seen people report significant reduction in Mass loss of the OEM manufacturer anodes because mine is protecting the entire system and they were never able to identify the cathode being the thermostat because they thought it could not participate in the reaction being that it was not making contact with the engine metal.

I believe the entire corrosion industry is incorrect about limescale and it is not a process that forms on metal and corrodes it but it is a process of metal corroding and creating limescale which then allows for the nucleation of minerals. The sample that I tested from the inside of my engine only had 0.43% copper, 0.19% sodium, 2.35% calcium... It was essentially 25% metals and 70% minerals and hydroxide along with some other traces of deposits.