Looking for learning,

[Yggdrasil]

yeah,

Are there still a metallic later on these?
Very dark coloration so there might be a reaction with the substrate.

 

[leHAI]

Are there still a metallic later on these?
Very dark coloration so there might be a reaction with the substrate.

I dont know, do you suggest any checking way?
as designed, the origin have layout of Cu, Niken and above is Au
I think Cu and Niken are dissolved

 

[Yggdrasil]

I dont know, do you suggest any checking way?
as designed, the origin have layout of Cu, Niken and above is Au
I think Cu and Niken are dissolved

I guess you mean Nickel (Ni).
I just found the color strange, it is very brown like Copper in color.

 

[leHAI]

I guess you mean Nickel (Ni).
I just found the color strange, it is very brown like Copper in color.

i thought the copper would dissolve into the solution?
but this one is not exactly like copper but it is bubbly, i think it is the glue that has not dissolved completely

 

[Yggdrasil]

i thought the copper would dissolve into the solution?
but this one is not exactly like copper but it is bubbly, i think it is the glue that has not dissolved completely

That is completely probable.
Maybe AP/Cupric Chloride might be better.

 

[leHAI]

That is completely probable.
Maybe AP/Cupric Chloride might be better.

I am a bit confused about AP/Cupric Chloride that you explained above so I searched the internet about how to make it, can you tell me if the way to make it in this Video is correct?

 

[Yggdrasil]

I am a bit confused about AP/Cupric Chloride that you explained above so I searched the internet about how to make it, can you tell me if the way to make it in this Video is correct?

I usually do not see videos.
What you need is HCl and a bit of corroded Copper. (Not strictly neccessary, butbit starts faster then).
Then you need an aquarium bubbler.
Pour in the HCl in a container big enough that the HCl do not splash out during bubbling.
Start the bubbler and let it run.
In a week or so the Copper behind the Gold will have dissolved and the foils will be loose.
If it is thin plating the Gold might be like blackish flakes in the bottom.
Thicker plating will leave beutiful yellow flakes in the bottom.

 

[leHAI]

I usually do not see videos.
What you need is HCl and a bit of corroded Copper. (Not strictly neccessary, butbit starts faster then).
Then you need an aquarium bubbler.
Pour in the HCl in a container big enough that the HCl do not splash out during bubbling.
Start the bubbler and let it run.
In a week or so the Copper behind the Gold will have dissolved and the foils will be loose.
If it is thin plating the Gold might be like blackish flakes in the bottom.
Thicker plating will leave beutiful yellow flakes in the bottom.

I have not seen how this method is cheaper than my Nitric method. Normally to extract gold from 1kg of material I need about 4l of solution which will have about 1l of nitric which costs about 10$, while this method as I understand it requires 4l of HCL, and a little copper, and also has to wait 1 week, so it costs more right?

 

[Yggdrasil]

I have not seen how this method is cheaper than my Nitric method. Normally to extract gold from 1kg of material I need about 4l of solution which will have about 1l of nitric which costs about 10$, while this method as I understand it requires 4l of HCL, and a little copper, and also has to wait 1 week, so it costs more right?

It needs enough solution to cover the material, not a set amount.
For most of us Nitric is if at all available, very expensive.
(Nitric can be as much as 10 times or more expensive as the HCl.)
But for a test it would be interesting to see if the Nitric is what turns the substrate dark.

 

[leHAI]

It needs enough solution to cover the material, not a set amount.
For most of us Nitric is if at all available, very expensive.
(Nitric can be as much as 10 times or more expensive as the HCl.)
But for a test it would be interesting to see if the Nitric is what turns the substrate dark.

ok i get it