> > Wouldn't the copper oxidize rapidly as a high temperature vapor?
Aluminum
> > deposition for optical mirrors is done in a similar way, but in a
vacuum.
> > That also helps with coverage.
>
> OK, so suggest a solution.

I don't have one.  I'm only causing trouble, not solving it ;-)  It might be
interesting to try it in a vacuum chamber if you have access to one.  I know
this works with alumnimum, but don't know what issues there might be with
copper.

> Wouldn't the copper
> be deposited in a thick enough film to allow
> soldering? What about using a number of "flashes"
> or maybe just tinning the copper before it oxidises?

I was thinking the hot copper vapor might oxidize in the air before it got
deposited, but again, I don't know.  If it did oxidize, you couldn't solder
to it and it wouldn't be a conductive layer anyway.  If vacuum is
impractical, how about inside a plastic bag filled with nitrogen or carbon
dioxide?


********************************************************************
Olin Lathrop, embedded systems consultant in Littleton Massachusetts
(978) 742-9014, olin@embedinc.com, http://www.embedinc.com

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