Cecil Moore wrote:
I'm no metallurgist so forgive my ignorance. Most of
us have had the problem of interfacing copper to
aluminum. Is there some sort of alloy terminal block
that will accomplish that feat? Seems simple enough
to create an alloy that gradually transitions from
copper to aluminum but what do I know?

The problems are mostly the different thermal coefficients of expansion
and surface oxidation of Al. Galvanic corrosion can also be an issue.

For more than you probably want to know:

http://www.inspect-ny.com/aluminum/aluminum.htm

If you are talking about your house wiring, the above link will get
you to stuff that addresses the problem.

If you are talking about home brew stuff, the general solution is to
clean, apply anti-oxide grease, and connect under compression, i.e.
something with a tightening screw.


--
Jim Pennino

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