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Registered Member #530
Joined: Sat Feb 17 2007, 07:56AM
Location: Victoria BC, Canada
Posts: 178
download the zip file and inside there will be a movie of the CuO + Al exotic thermite targets being shot - notice the brown cloud of copper crystals --- same thing happens when you heat up this material too!!
Registered Member #690
Joined: Tue May 08 2007, 03:47AM
Location: New Jersey, USA
Posts: 616
Ive found a good way to make iron oxide in large quantities (probly impure too) is to pack steel wool in a metal tube, force air through it, or better yet oxygen, and light it. It's almost as much fun to watch as the thermite is. It makes a mix of the two oxides, but works very well.
Registered Member #261
Joined: Mon Feb 27 2006, 12:34AM
Location:
Posts: 22
Expensive though. Easier to buy buckets of rust at hardware stores as a cement colorant.
I seriously doubt that the CuO/Al 'thermite' pops from a rifle bullet, loosely confined at 1900m/s. Flash powders don't go that fast, techincally they arent high explosives either so you couldnt measure a detonation front, well, LOTS of FP would detonate but for all practical purposes.... ANFO at 2in diameter and low density I would expect to go that fast, not CuO/Al.
Registered Member #530
Joined: Sat Feb 17 2007, 07:56AM
Location: Victoria BC, Canada
Posts: 178
Actually I've tested CuO/Al thermite and it will ignite from a .22 LR FMJ loosely packed. The speed of initiation is very very fast -- on par with flash -- I put 100 gr inside a cardboard tube and shot it with a .223 FMJ and the tube exploded! The speed of the CuO/Al thermite was calculated on Science madness - website. Some people say confined CuO/Al thermite burns at 1200m/sec while others have reported nearly 1850m/Sec confined... so I'm just stating that this stuff is pretty awesome, can can ignite simply by moderate impact. Red Lead/ Al is also another very energetic mix as well...
Registered Member #193
Joined: Fri Feb 17 2006, 07:04AM
Location: sheffield
Posts: 1022
OK, since I live in Englnd it's no surprise that I don't know much about guns. Having said that I would expect that if I packed a cardboard tube with sand then shot it, the tube would explode. That doesn't mean sand is explosive. Did you hear a second bang from the tube?
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Thermite
