Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Ultra thin silver and gold foil

  1. Nov 16, 2016 #1
    does anyone know where to buy ultra thin (0.024" or less) large silver and gold foil squares (like 7"'x7" for gold/silver and up to 3'x6' for silver)?

    Looking into large and small sputtering and sealing around a large surface area of metal and connecting the electrode outside the vacuum is easier than trying to lay out a bunch of small pieces and then trying to electrically connect them.
     
  2. jcsd
  3. Nov 17, 2016 #2

    Tom.G

    User Avatar
    Science Advisor

  4. Nov 17, 2016 #3

    Baluncore

    User Avatar
    Science Advisor

    Exactly what units are those?
     
  5. Nov 17, 2016 #4

    rbelli1

    User Avatar
    Gold Member

    Assuming (") means inches that is pretty thick foil. Where does the ultra thin come in?

    BoB
     
  6. Nov 17, 2016 #5

    Baluncore

    User Avatar
    Science Advisor

    Yes. 0.024 inch is not really foil, but a fairly thick shim or a sheet material.

    If I needed shim, I would buy a commodity, in this case drawn round wire, then roll it through jewellery rollers to make the thickness and width material that I required for my task. That way I buy the material for the lowest price and can adjust my stock for optimum thickness as I operate the process.

    https://www.alibaba.com/product-detail/silver-metal-99-99-foil-ribbon_60289383545.html
    https://www.alibaba.com/product-detail/999-pure-silver-sheets-for-jewelry_60290250116.html
    https://www.alibaba.com/product-detail/99-999-pure-Au-wire-gold_60310181784.html?s=p
    https://www.alibaba.com/product-detail/High-quality-100-Metal-Leaf-Pure_60254960716.html?s=p
     
  7. Nov 17, 2016 #6
    That is a really good idea, where do you get a jewelry roller? Then I could just buy junk silver or gold and then melt it down and roll it out? can you melt silver with this - http://www.bethlehemburners.com/torches/alpha

    then just pour it out over a surface and let it harden?
     
    Last edited: Nov 17, 2016
  8. Nov 17, 2016 #7

    Baluncore

    User Avatar
    Science Advisor

    ebay search; Jewellery Rolling Mill. I get 290 listings. Most are only 3" or 4" wide.

    It depends on the gasses and the amount of heat you need. Reduce heat loss by using a small enclosed oven.

    Spill the melt into a long groove, maybe cut in wood. Then when hard, roll it through the round profile section of the jewellery rollers to make a rod of uniform needed diameter. Then roll the rod between the flat rollers to make shim.

    Edit:
    also ebay search; jewellery furnace
     
    Last edited: Nov 17, 2016
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Ultra thin silver and gold foil
Loading...