On 26 Sep 2005 00:08:00 -0700, "ed"
wrote:

I suggest asking whoever suggested you were over zinced to explain in
precise terms the physics that would back up their notion.

ed
http://www.marineenginedigest.com


Not quite the explanation you want - but it happens that Sir Humphrey
Day sold the (Royal) Navy on the virtues of electrolytic protection
for their copper clad hulls.

Sre enough, the cladding no longer eroded, and the fleet was fitted,
but within months - all kinds of livestock were choking the hulls.
With no copper salts entering the water, there was no disincentive to
barnacles and the rest.

Plenty of zincs increase the electrolytic protection for exposed metal
by sacrificing zinc. But what does not erode from the steel and
bronze is not necessarily what was keeping the growth off,
in this case

Brian Whatcott Altus OK