18 replies to this topic

[Valec]

I have no idea what crystals those could have been. However, I'd like to know, too. Sounds pretty interesting.

So, is triboluminescence dangerous in pyrotechnics?
I couldn't find much helpful information...
http://en.wikipedia....iboluminescence
http://chemistry.abo...aa060601a_2.htm
http://scienceworld....minescence.html
...doesn't really help.

Btww, last week I tried to ballmill a bit of self-made magnalium using steel balls (just a proof of concept experiment with little material). After about 30 seconds the milling jar started glowing for maybe half a second. Looks like fine magnalium shouldn't be milled like that...

[Bonny]

Btww, last week I tried to ballmill a bit of self-made magnalium using steel balls (just a proof of concept experiment with little material). After about 30 seconds the milling jar started glowing for maybe half a second. Looks like fine magnalium shouldn't be milled like that...

I ball mill MgAl with steel balls whenever I make it and have never experienced any glowing.

[Karl]

Sorry to bring up an old thread but I did a search for baking beads and it brought this up. I tried it myself tonight with Tescos Ceramic Baking Beads and yes they do indeed spark. Although I had to use a fairly firm strike between two beads I got a minute spark out of them. I couldn't work my head round all the jargon used in this thread, did we work out if it's actually dangerous to mill with these then?

[starseeker]

Sorry to bring up an old thread but I did a search for baking beads and it brought this up. I tried it myself tonight with Tescos Ceramic Baking Beads and yes they do indeed spark. Although I had to use a fairly firm strike between two beads I got a minute spark out of them. I couldn't work my head round all the jargon used in this thread, did we work out if it's actually dangerous to mill with these then?

They will be ok to use for individual chems etc,but no good for b.p.