4 replies to this topic

[Aussie Pyro King]

What exactly is dark aluminium powder? I can get it but what is the difference from it and normal aluminium? The chemical symbol is the same. Is it just coated in something?

Jared

[MrBungle]

Hi Jared

According to Rev Lancaster, Dark Pyro Al has a small percentage of carbon in it:

"The so called Dark Pyro Aliminium consists of a very fine flake powder that is produced in varying shades of grey, and although it has a nominal mesh size of about 200 it contains particles as fine as 2u.
It has been said that this powder was made in the past from burned paper-backed foil, or foil that has been sprayed with varnish which is subsequently charred. The writer has not met this practice but the British Metal Powder Co. of Bolton certainly incorporate a small percentage of carbon black in their pyro-powder."


I assume this would give it its colour.
Where are you getting it in Oz? I've had no luck.


Simon

wheee, my first post!

Edited by MrBungle, 28 January 2004 - 05:28 AM.

[Aussie Pyro King]

You might not be able to get it fom my source. There is a science connection in the family that I would not like to expose openly over the internet. There is a very good chemicals supplier in Paramatta, Sydney called Silform Chemicals which is insanely cheap. I'm not sure if they sell dark aluminium because I have never looked. Sorry for the secrecy but if you would like to know more please email me so I can talk to just you and not the whole world.

Jared

[MrBungle]

Oh ok, thats understandable.
It's ok, I'm sure I'll find a supply eventually, if I look hard enough.

Simon

[BigG]

Gentelman - Please search before posting. The subject of "Dark" aluminium powder has been discussed before and very detailed posts were made.