<B0101>
even if i could... i know that my home lab may not have enough space to put that thing
<B0101>
azonenberg_work: do you know anything about Quantum mechanics?
<lekernel>
"at a affordable price"? oh well...
<azonenberg_work>
lekernel: lol
<lekernel>
checking out state auctions might be interesting for such equipment. I nearly bought a 300-ish MHz NMR last year for 200E.
<lekernel>
I would have needed liquid helium to get it to work, though. I wonder why they didn't use high temperature superconducting magnets; the field isn't _so_ high ...
<azonenberg_work>
Yeah, i heard about that lol
<berndj>
lekernel, afaik they prefer "standard" superconductors because they have a higher and hence more useful critical B field
<berndj>
also, running a high temp superconductor at said high temp doesn't leave any room for B field; so you cool it some below Tc so that it can be a *magnet*
<berndj>
i think as far as superconductors are concerned, 1T is plenty high!
<bart416>
azonenberg_work, please note this:
<bart416>
SKJ-50CZ is a high quality CZ crystal growth furnace for material research laboratories at a affordable price.
<bart416>
Sale Price: USD$119,995.00
<bart416>
mhhh...
<azonenberg_work>
lol
<bart416>
also, it's an affordable price
<bart416>
Demand a discount of 99.9999999% for spotting that error!
<mrdata>
what can you build a furnace for, these days?
<mrdata>
let's start with 18th century fire brick
<bart416>
mrdata, that'll do horrible as a crystal growing furnace though
<mrdata>
how hard is it to make copper wire from a billet?
<bart416>
You need a clean chamber
<mrdata>
bart416, what is needed to bring it up to spec?
<mrdata>
clean how?
<bart416>
High carbon steel alloys
<mrdata>
let's say i have unlimited quantities of chalk
<bart416>
You need a metal alloy that won't disperse material into the furnace
<mrdata>
why not ceramic?
<bart416>
Holds its structural integrity
<bart416>
Does not contain a crystal seed of any sorts!
<mrdata>
oooooh
<bart416>
And by all means, no silicium in it, at all
<mrdata>
CaO has no Si in it... oh, unless it's random linestone maybe
<mrdata>
*limestone
<mrdata>
how about a metallic coating on the chamber, then?
<bart416>
You don't get it, you need to use a metal alloy for this
<bart416>
CaO will thermally disband and create oxides
<mrdata>
so, the preferred material is high carbon steel?
<mrdata>
stainless?
<mrdata>
say, chrome vanadium?
<mrdata>
or,...
<bart416>
I'd have to look what the preferred material is
<bart416>
But high carbon steel has a high enough melting point I think
<bart416>
You wouldn't want to use titanium
<bart416>
Too dangerous
<azonenberg_work>
dangerous how
<mrdata>
yeah, why the prejudice against titanium?
<mrdata>
is it very reactive at high temperature?
<azonenberg_work>
What about tungsten? :P
<mrdata>
i like tungsten
<mrdata>
but, it also oxidizes?
<mrdata>
hafnium tantalum carbide?
<mrdata>
if we're getting exotic
<azonenberg_work>
lol
<mrdata>
it resists high temperatures, but maybe it needs a coating
<bart416>
titanium can catch fire at higher temperatures mrdata
<mrdata>
ah
<mrdata>
how deep a coating will do?
<mrdata>
a few nm?
<mrdata>
and, coating with what?
<bart416>
Maybe Titanium Carbide would work
<bart416>
Metls at +3000°C
<mrdata>
i am interested to know about refractory materials to use at extremely high temperatures
<mrdata>
10,000 K and above
<bart416>
That's a highly specialised field mrdata
<mrdata>
anyone here know the composition of Starlite?
<mrdata>
with a Starlite nosecone, you could launch objects from cannons at sea level and give them escape velocity
<mrdata>
they might make good crucibles, too
<bart416>
Starlite's formula is unknown
<mrdata>
time for someone to really lean on its inventor
<bart416>
They didn't even patent it I think
<bart416>
Out of fear of people replicating it from the patent data
<mrdata>
the inventor put all this effort into making it, and for what? it hasnt been deployed
<mrdata>
he's way too paranoid about it
<azonenberg_work>
what is it?
<azonenberg_work>
some kind of ceramic?
<mrdata>
starlite is a composite material that resists 12,000 degree temperature
<azonenberg_work>
o_O
<azonenberg_work>
and is it being used for anything now?
<mrdata>
you can find videos of flame tests on youtube
<mrdata>
intended for deployment on rockets, but the market may not be ready for it
<azonenberg_work>
no, i mean is it actually being used commercially
<azonenberg_work>
and if not, why
<mrdata>
no
<mrdata>
not deployed, because the inventor is crazy paranoid
<azonenberg_work>
coca-cola's formula is top secret
<azonenberg_work>
but they still sell it
<mrdata>
wont sell it; wont let samples out of his sight
<azonenberg_work>
oh, so crazy paranoid
<mrdata>
yes!
<azonenberg_work>
rather than pragmatically paranoid
<mrdata>
nutbar
<azonenberg_work>
So nobody even knows if it works as well as he claims it does?
<mrdata>
it's been tested
<azonenberg_work>
By reliable third-party labs?
<mrdata>
video of flame tests show it protecting an egg from being cooked
<mrdata>
youtube
<azonenberg_work>
So it's actually an insulator?
<mrdata>
yep
<azonenberg_work>
As opposed to maintaining structural integrity while transmitting heat
<azonenberg_work>
for example, tungsten (at lower temperatures)
<azonenberg_work>
which is a metal and thus thermally conductive
<azonenberg_work>
but doesnt melt
<mrdata>
we need both kinds of materials, sure
<mrdata>
i want a flexible, non-radar reflective insulator that can stand 3500 degree temperatures
<mrdata>
(for some mach-24 flight tests)
<bart416>
radar reflection depends more on shape than material in many ways
<mrdata>
ok. the point is, it has to do mach 24 to mach 30, through upper atmosphere, from london to sydney