Reid Harvey wrote: > Marshall, > I think I skipped over the powdered copper idea because in my thinking > (or is it ignorance?) this material doesn't present itself any more > readily than is the case with powdered silver. I understand that there > is a lot more copper used industrially, but is there some particular > application around which I would find the powder? If so this would need > to be down in the nanometers. And is it a foregone conclusion that the > silver would plate on this.
If you dip a copper wire into silver nitrate, it will plate with silver immediately, as the copper combines with the nitrate, plating out the silver. I would expect it to occur on copper powder as well, but when you get to nm sizes, things can change. Copper powder is used as an additive in paints, and as a base for plating. http://www.caswellplating.com/kits/cupwdr.htm shows it available from them for about $1.50 a pound, far cheaper than silver's $5 and ounce price. I am sure in bulk it can be had far cheaper than that. However, I have no idea of the particle size for this. http://www.makin-metals.com/powders.html shows a number of grades of copper powder that are available from them. I am not sure size is that important, it is surface area that is important. Thus the dendrite copper powder may provide a good surface area to volume ratio. Their fine grain powder is 0-53 micron, and significantly larger than the low nm range. But I am not sure this is a problem. With silver you were working with a few parts per million. With copper powder being relatively cheap, about 1/50 the price of silver, you can afford to put more of it in the candle. When you plate with the silver, then 100% of the silver will be on the surface. > > > Right now there seem to be so many good ideas out there that I'm simply > picking at what's most obvious to me. But with the right spark I could > certainly get excited about copper. This may be especially true after > I've gone through the mock photo processing approach. I wish you success in your endeavor. Marshall > > Reid > > Marshal Dudley said: > .......Did you get my message about the possible of using powdered > copper, then > running silver nitrate through it to plate silver on the outside of the > grains? > > Marshall > > -- > The silver-list is a moderated forum for discussion of colloidal silver. > > Instructions for unsubscribing may be found at: http://silverlist.org > > To post, address your message to: [email protected] > > Silver-list archive: http://escribe.com/health/thesilverlist/index.html > > List maintainer: Mike Devour <[email protected]>
