AJKOER
Radically Dubious
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Dissolving a Tungsten Filament
Per a recent thread (see http://www.sciencemadness.org/talk/viewthread.php?tid=153266 ), I suggested a galvanic cell approach based on employing H2O2.
That apparently does not work with dilute H2O2. So, for certain, Tsjerk was right on this point.
However, I have found a process that apparently does largely dissolve a tungsten filament (see pictures, before and after below).
Pending reproduction of the results and a more complete understanding of the underlying chemistry, I will comment further.
In the meanwhile, enjoy the pictures!
Suggestions on sources of W that are less expensive and available, for more expanded testing, would be appreciated. I suspect that the tungsten
filament employed here is wire W, heated in some air, resulting in a W2O coating.
[Edited on 25-8-2019 by AJKOER]
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AJKOER
Radically Dubious
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Starting Tungsten and graphite rods
[Edited on 25-8-2019 by AJKOER]
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AJKOER
Radically Dubious
Posts: 3026
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Now you see the filament and then, not so much (look hard).
[Edited on 25-8-2019 by AJKOER]
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![[*]](images/xpblue/default_icon.gif){kind=icon}
