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Unread 06-29-2003, 09:28 AM   #20
jaydee
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Join Date: Dec 2001
Location: Spokane WA
Posts: 6,506
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Quote:
Originally posted by MadDogMe
Water?, a third element. The two by themselves are'nt reactive AFAIK, ie; placing an Alu block onto a Copper block(in a dry atmosphere) will not cause a 'reaction' AFAIK. I think peoples definitions of 'reaction' are off a bit...
Agreed. Ok, so it still stands not to use bear AL and Copper/Brass together in a water cooling system. I find that the two actually touching is far more 'lethal" than having the water connect the two (i.e. al block and a brass rad). I ran an AL block with a acrylic top and brass barbs (keeps the metal from touching) for several months with a brass rad with no visable effect on the block, but I also ran a AL block with an AL top and brass barbs in it and about a month later took it apart to find the AL top and base just about eaten through.

So would one expect the two metals in direct contact with each other with water flowing over them to be considerably worst than a setup with indirect contact between the metals? And is it just a myth that a brass rad and AL block would even cause the battery effect being they are not in contact with eachother???
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