On Fri, 25 Feb 2005 16:43:32 GMT, (Anna Kettle)
wrote:

If some stainless steel and some aluminium are left in contact then am
I imagining it or is there an electric current induced.

Galvanic corrosion. In a suitable electrolyte the aluminium end of
an aluminium/stainless steel pair will corrode, the steel end will
not.

http://www.ocean.udel.edu/mas/masnotes/corrosion.html


--
Peter Parry.
http://www.wpp.ltd.uk/