symboom
International Hazard
Posts: 1143
Registered: 11-11-2010
Location: Wrongplanet
Member Is Offline
Mood: Doing science while it is still legal since 2010
|
|
Titanium-Boron super thermite
just got some titanium powder and boron powder
Titanium diboride is produced from the worlds hottest pyrotechnic reaction
What is the best way to start the thermite
Also it is known as the hottest pyrotechnic
Reaction does anyone know how hot it burns.
[Edited on 16-3-2017 by symboom]
|
|
|
j_sum1
Administrator
Posts: 6338
Registered: 4-10-2014
Location: At home
Member Is Offline
Mood: Most of the ducks are in a row
|
|
I don't think this is technically a thermite. A thermite is a reaction between a reactive metal and the oxide of a less reactive metal.
You could look up the HoF of titanium boride. That plus some heat capacity calculations gives you a ceiling value for the temperature attained.
|
|
|
symboom
International Hazard
Posts: 1143
Registered: 11-11-2010
Location: Wrongplanet
Member Is Offline
Mood: Doing science while it is still legal since 2010
|
|
Extremely difficult to ignite even boron potassium chlorate was not working
Interesting
Boron reacts very fast with potassium permanganate like a fiash powder but burns very slow like smoldering charcoal slow in normal atmosphere
Titanium was not as very reactive with Potassium Permanganate
So I see a set up here the more titanium the slower the reaction the more boron the faster it reacts
Tried adding magnesium did not help
Titanium diboride is formed after an extremely hot reaction
Just need to reach initial temperature first
Zinc powder did not react with the potassium permanganate
Just using butane torch for heating
|
|
|
PirateDocBrown
National Hazard
Posts: 570
Registered: 27-11-2016
Location: Minnesota
Member Is Offline
Mood: No Mood
|
|
If you've got KMnO4 mixed with your Ti/B mixture, why not get it started with a drop of glycerin?
|
|
|
MineMan
International Hazard
Posts: 1015
Registered: 29-3-2015
Member Is Offline
Mood: No Mood
|
|
How did this turn out?
|
|
|
symboom
International Hazard
Posts: 1143
Registered: 11-11-2010
Location: Wrongplanet
Member Is Offline
Mood: Doing science while it is still legal since 2010
|
|
This is an old thread it turned out terrible bought titanium and boron powder just for this too. I could not get it to sustain combustion gave up on
it.
Boron also does not burn very well on its own it's very slow
Didn't use glycern because it might lower the starting temperature.
Excerpt from
https://en.m.wikipedia.org/wiki/Pyrotechnic_initiator
Titanium-boron
Titanium-boron composition is one of the hottest pyrotechnic reactions in common usage. It is solid-state, gasless. It can be used as a pyrotechnic
initiator or for heating confined gas to perform mechanical work.
Anyone else hopefully could get this to work.
[Edited on 7-4-2020 by symboom]
|
|
|
wg48temp9
National Hazard
Posts: 786
Registered: 30-12-2018
Location: not so United Kingdom
Member Is Offline
|
|
Quote: Originally posted by symboom  | This is an old thread it turned out terrible bought titanium and boron powder just for this too. I could not get it to sustain combustion gave up on
it.
Boron also does not burn very well on its own it's very slow
Didn't use glycern because it might lower the starting temperature.
Excerpt from
https://en.m.wikipedia.org/wiki/Pyrotechnic_initiator
Titanium-boron
Titanium-boron composition is one of the hottest pyrotechnic reactions in common usage. It is solid-state, gasless. It can be used as a pyrotechnic
initiator or for heating confined gas to perform mechanical work.
Anyone else hopefully could get this to work.
[Edited on 7-4-2020 by symboom] |
Given that titanium, titanium oxide, boron and titanium diboride melt well over 1000C but a titanium boron reaction only reaches 1000C unless the the
partcle size is very small such that significant diffusion occurs at 1000C I don't see how it would be self sustaining at room temperature.
So you would need very fine powder. Possibly heating the whole charge prior to ignition may help.
The claim that it is the hottest pyrotechnic reaction appears wrong. Iron oxide aluminium thermites can reach about 3,000C.
I am wg48 but not on my usual pc hence the temp handle.
Thank goodness for Fleming and the fungi.
Old codger' lives matters, wear a mask and help save them.
Be aware of demagoguery, keep your frontal lobes fully engaged.
I don't know who invented mRNA vaccines but they should get a fancy medal and I hope they made a shed load of money from it.
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
