Galvanic Corrosion

Originally Posted by
NavyDiver
Very Nice. Did you add some rubber between the steel and aluminum? You might like to do that if not to stop possible Galvanic Corrosion.
Regards ND
Hi ND,
Thanks for the suggestion... I did think about that, but given that I have given the steel a number of coats of rust proof paint as an insulator and there is pretty low anodic voltage difference of around 0.1V between the steel brackets and the cast aluminium racks... they should be OK. I have read that if the difference is below 0.15V on the anodic index in outdoor conditions you should have little corrosive effect (providing you aren't a boat). The original Rhino Rack brackets were powder coated steel. Galvanised steel and aluminium on the other hand is a bad combo... and stainless steel and gal is a real corrosive mix.
Interesting point you raise though... as it makes you think of the combination of aluminium and steel in the Disco chassis and panels.
Time will tell all....
Cheers
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