Magnesium
#1
Posted 03 July 2010 - 09:48 AM
#2
Posted 03 July 2010 - 11:45 AM
#3
Posted 03 July 2010 - 12:27 PM
The problem with finding fine Mg powder is that it tends to oxidise over time when stored, so you usually end up with a good percentage of MgO if the source is unkown. Fine magnallium makes a good substitute in most formulae.
#4
Posted 03 July 2010 - 12:33 PM
#5
Posted 03 July 2010 - 12:49 PM
also can it be stored in oil and then rinced and dried before use?
#6
Posted 03 July 2010 - 01:26 PM
http://www.pyrosocie...lling-accident/
#7
Posted 03 July 2010 - 01:49 PM
Magnesium seems the more likely choice to me for a cleaner more steady flame.
Most ordinary lab suppliers don't go finer than about 100 microns. Keten claims to do freshly milled Mg in a range of sizes from 60 mesh to 240 mesh to dust (look up his feedback on here first though). Svenska Kemi seem to do fine stuff passivated with Paraffin though the mesh size is unspecified...
Edited by BrightStar, 03 July 2010 - 01:52 PM.
#8
Posted 03 July 2010 - 03:31 PM
#9
Posted 16 July 2010 - 05:36 AM
well that answers that question. i was woundering about fine Ti would that be an alternative?
An alternative for coloured stars?
I can see pretty significant flame pollution issues...
I would be interested in the result though.
#10
Posted 17 July 2010 - 01:59 AM
#11
Posted 19 July 2010 - 12:47 PM
well from what i can see Ti burns in a similar spectrum to Mg and appears to be similarly reactive, i have heard of Ti/KClO4 flash (but was warned it was to friction sensitive) so would this work with in a star? could be interesting if it does with varying mesh's.
Nooooo, they're quite different . Titanium vapourises at something like 3 times the temperature of Mg, hence will always tend to make sparks rather than burn to enhance a flame. Also, MgO (emits bright white light) is easily reduced to MgCl (colourless) in the flame, Ti less so I would guess. Keep Ti for adding spark trails for Mg/MgAl fuelled stars I think
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