If you honestly do think that your onto something you should
probably rethink your statement above. Your room also needs to be
more then climate controlled for any chance of workable results you
must to work under a vacuum. Do some research.
Wise Blood, a bit of internet wisdom might suggest that a useful
reply does not need to include plain old insults, as your post verges
on doing. Just my two cents...
And she does NOT need a vacuum. She needs an inert atmosphere. Vacuum
is one such, and a fine method indeed. But a glove box properly
flushed and filled with Argon, will work just as well, and is a lot
easier to achieve.
There are, to my mind, other potential problems or oddities with her
described method. Notably among these are the use of a torch to melt
rather than a furnace of some sort, since a torch introduces
combustion gasses, both unburned fuel and oxygen or air, and the
combustion products, (water and CO2) neither of which is totally
inert, though they may not be much of a problem. But any residual
oxygen in the flame WOULD be a problem.
And a butane butane fueled torch may not be hot enough to melt more
than very small portions of gold unless it's burning butane with
compressed oxygen. butane with compressed air or ambient air might
not work so well, and if there's ambient air there at all, as simple
torches require (but not those with flashback arrestors), then she
doesn't have the needed inert atmosphere. and I've got some questions
about her flux additions. Ammonium chloride "softens" crystal
structures only by removing certain types of base metal impurities
(such as iron in particular) which can make an alloy brittle. If her
gold is already pure, then the ammonium chloride would only produce
it's typical nice blue noxious smoke, without additional effect on
the alloy. And then there was the concerns for humidity. Hard to
figure what that was about. The only way moisture should enter into
this at all, is if moisture, such as from water vapor condensing on a
cold ingot mold from the flame (full of hot water vapor), ends up in
contact with poured metal. That could be a problem, spewing the
molten mass all over. But it's easily avoided by the common means of
preheating the ingot mold before pouring.
One of the more interesting references to purple gold that I recall
is a low tech method of using the alloy. Solid alloy is not
prepared. Rather, an article is made from aluminum, and then gold
electroplated. This is then torch fired, gently, until the gold
dissipates into the aluminum, which happens below the melting point
of aluminum or gold. With care, the process can be halted just at
the point where the gold and aluminum have formed the purple
intermettalic compound, which actually can form in much this same
way, over time, on cold aluminum that's been gold plated, or places
such as aluminum electric wire clamped into gold plated contacts. The
above method works because the gold electroplate is very thin, and
little actual mixing or diffusion needs to happen before enough has
taken place to form the color. Very different from actually trying to
melt the gold and aluminum together to make a solid purple gold mass.
But food for thought, nevertheless.