Joe Skulan - 28-3-2016 at 02:48
I am looking for a tiny heating element that can reach 1000°+, something on the order of 2-3mm wide and 5mm long. I want to put it the closed end of
a quartz tube to create a “hot finger” for growing metal crystals by vapor deposition. Anyone aware of such a thing, either off the shelf or
easily home made?
Thanks
yobbo II - 28-3-2016 at 04:10
The elements used and sold for 'vaping' may do the job.
They are a short coil of Kanthal wire
Yob
Joe Skulan - 28-3-2016 at 04:12
good idea-- if they get hot enough.
Maker - 28-3-2016 at 05:16
Buy a spool of Nichrome/Kanthal wire, you can make your own heating elements in any shape or size you want, and they can run at any temperature up to
about 1400°C. The size you want won't draw much current at all, you can get away with a really simple controller (Think; Potentiometer and power
supply).
Joe Skulan - 28-3-2016 at 11:02
Thanks. I'm surrounded by DIY vapers, so this will be easier than I thought.
brubei - 28-3-2016 at 11:21
maybe induction
Oscilllator - 28-3-2016 at 15:01
Maybe a cigarette lighter from an old car? They have a perfectly shaped small circular coil of wire that can get up to red heat at least.
Magpie - 28-3-2016 at 15:22
Maybe there is something of use here: elec heated tube
3DTOPO - 29-3-2016 at 19:04
They sell little SiC heaters on eBay. SiC is continuously good for around 1500C.
http://www.ebay.com/itm/FF003-SIC-Hot-Surface-Ignitor-for-Rh...
http://www.ebay.com/itm/New-Ignitor-Goodman-B1401018S-B14010...
Or as suggested, induction (perhaps with a graphite inductor in your quartz tube):
http://www.amazon.com/gp/product/B017UABBQY/ref=s9_simh_gw_g...
3DTOPO - 29-3-2016 at 23:53
PS. The induction heater with graphite would be good to around 3000C, provided of course the tube is kept cool and filled with argon (not just any
inert atmosphere) or a vacuum.