Sacrificial Anode

[Whizbang]

Atkins has had those for years.

also that definition is kinda lacking.

electrochemical process is due to the creation of a cell between two points. One side is oxidized (the anode), as it gives up electrons (and losses mass since atoms are ionized into solution) which then reduce a different spot (the cathode) where material from solution builds up. Use of an a sacrificial anode ground into the block (cant be in plastic) essentially changes what the anode is in the voltaic cell. It can still form between two points on a surface as well which is how rust forms as Fe forms a cell with itself.

weirdly, my expresso maker has this problem.

[hozzmanrx7]

Originally Posted by Whizbang

Atkins has had those for years.

also that definition is kinda lacking.

electrochemical process is due to the creation of a cell between two points. One side is oxidized (the anode), as it gives up electrons (and losses mass since atoms are ionized into solution) which then reduce a different spot (the cathode) where material from solution builds up. Use of an a sacrificial anode ground into the block (cant be in plastic) essentially changes what the anode is in the voltaic cell. It can still form between two points on a surface as well which is how rust forms as Fe forms a cell with itself.

weirdly, my expresso maker has this problem.

GREAT STUFF! Thanks.

I checked their web site and all they offer is for their Oil and Water heat exchangers they sell for Marine applications. Nothing that mounts into the block. That said, it looks like what they sell is just an adapter away from working like the ones I made. Also, reference the "angry stig" comment, I made mine so replacement Zinc rods could be simply screwed in to the adaptor plug I made.

Ted,

So you're suggesting besides good coolant maintenance an additional consideration to deal with electrolysis is to mount additional grounding wires? Interesting.

[RETed]

Originally Posted by hozzmanrx7

Ted,

So you're suggesting besides good coolant maintenance an additional consideration to deal with electrolysis is to mount additional grounding wires? Interesting.

That is correct.

Which opens up another can of worms...
Coolants and buffering.
Some coolants will tout "buffering" or "buffering agents".
This is to protect pH.
I believe the "Mercedes type" of coolant does this, and I tout this product as recommended for my customers.


-Ted