I'm a bit baffled here, is there any reason for such a wire to have a PM plating?We do not have to wait until morning, I can at least confirm the coating is not tin.
The wire is folder over with the cut ends pointed towards the bottom of the vessel and it appears the nitric is attacking the copper slowly working it way up the wire.
Wouldn't that be a hoot if it turns out to be platinum, then from this wire could weave it into a mesh and use it as an anode..
Or cast the wire into anodes for parting.
I'm not going to stannous test it simply because common sense tells me palladium is less resitent to nitric.
Common wire coatings are tin, nickel and silver. Silver being found very unlikely these days. And in consumer electronics, I am afraid that even silver is luxury. Never seen Pt plated wire. Pd plated - yes, but in switches and military gear from soviet era.We do not have to wait until morning, I can at least confirm the coating is not tin.
The wire is folder over with the cut ends pointed towards the bottom of the vessel and it appears the nitric is attacking the copper slowly working it way up the wire.
Wouldn't that be a hoot if it turns out to be platinum, then from this wire could weave it into a mesh and use it as an anode..
Or cast the wire into anodes for parting.
I'm not going to stannous test it simply because common sense tells me palladium is less resitent to nitric.
Hmm, this might be interesting.The wire on the left hand side had it been tin or nickel clad copper the coating would have dissolved in hydrochloric acid.
This morning I heated the HCL as you can see there was no change.
The clade wire in nitric the coating was attacked after 12 hours, look closely you'll notice it was an incomplete digestion. There's still visible clad.
View attachment 53252 View attachment 53253
Sound advice, but after paying a premium for my nitric acid have none to spare on this nonsense.Get some in solution and do a stannous test. Hot AR will dissolve Pt. You'd only need a tiny amount in solution to test it. The stannous test is pretty definitive when Pt is present.
The guys refining silver contacts come into my contact with cadmium than I do, cadmium was one of the best paint pigments.If I though that solution contained cadmium I would have on a pair of gloves when handling it at a minimum.
I had a good load of wire a couple years ago that was silver plated. Large sized, stranded stuff and was used in solar panel charging stations. Actually it worked out well in a copper cell.
One coupon was subjected to cold then hot hydrochloric acid, neither produced a reaction.If I though that solution contained cadmium I would have on a pair of gloves when handling it at a minimum.
I had a good load of wire a couple years ago that was silver plated. Large sized, stranded stuff and was used in solar panel charging stations. Actually it worked out well in a copper cell.
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