Quince
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Tantalum
Is there anything interesting I can do with a tantalum rod?
\"One of the surest signs of Conrad\'s genius is that women dislike his books.\" --George Orwell
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uber luminal
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send it to me. or make it into foil.
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Pyridinium
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It's very resistant to various forms of attack (making it almost as good as platinum for some uses) and makes a good electrode material. I
think only HF will really attack it.
I'm jealous. I want some tantalum metal too.
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unionised
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You can anodise it and thereby turn it pretty colours.
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Quince
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I got it from tungsten.com's orphan bin, as I was buying tungsten pieces and didn't have anough stuff for the minimum order. I figured
I'd get some tantalum and find a use later...
\"One of the surest signs of Conrad\'s genius is that women dislike his books.\" --George Orwell
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Scratch-
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I got some out of some large capacitors, although I think it was mostly oxide. I tried using it as electrodes to electrolisize water with an
electrolyte and it turned the solution neon yellow, kinda like cheap sports drinks.
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BromicAcid
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Tantalium is one of the best base metals to coat with PbO2 for use in a chlorate/perchlorate cell.
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Quince
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Interesting. Now to find PbO2...
\"One of the surest signs of Conrad\'s genius is that women dislike his books.\" --George Orwell
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Hellhound
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PbO2 could be obtained from lead batteries. The problem is that it's mixed with PbSO4. To get almost pure PbO2 battery must be fully charged
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mick
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tantalum is resistant to consant boiling HCl
mick
[Edited on 26-6-2005 by mick]
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Quince
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So if I found an old car battery that could still be charged, I should be able to get PbO2 from it?
\"One of the surest signs of Conrad\'s genius is that women dislike his books.\" --George Orwell
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12AX7
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Could. Can also anodize Pb with H2SO4, although it doesn't seem to get too thick. I've been able to anodize lead in KClO3 solution with
various other additives (acetic acid, sodium bicarbonate, chromates and sulfates, etc...) and, leaving it on for a long time without stirring, lead
hydroxide/carbonate builds up on it. Eventually it anodizes to brown PbO2, at which point the loose material can be shaken off and the electrode can
be anodized some more, I used a sodium chloride solution and freed some brown powder. It appears to make more than what's on it, until it wears
off and finally passivates.
Tim
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