“It's basically just rust on iron, so it's pretty easy to make in large areas,” Miller says. Here, PVD allowed the team to create thin films of rust a mere 10 nanometers thick, thousands of times thinner than a human hair.
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The internet is largely anonymous & unsetted; some names may be fictitious and some recommendations might be harmful. Xash April 3, 2002, 3:49pm #1ok, so I open up an old Palm III which was shelved for like months.
The batteries by now have all leaked some strange looking white substance all over the Palm’s pants. The Palm III wakes up and talks to me about near death experiences and all the light it saw and all.
Depending on the kind of rust, you may be able to dissolve it with an appropriate fluid. In any case be sure to remove any residue from the PC board before reassembling the Palm.
The stuff on your contacts isn’t rust which is iron oxide. That's fair I think. As soon as I find a statement of the cost I’ll send it to them.
I think it’s important to remember that conductivity is measured on a continuous scale, not a pigeonhole of “is/isn’t.” While many oxides are by composition poor conductors, a little corrosion that would open a 1.2V AA circuit might not inhibit, say, a 9V battery. As to your question of removing the deposits, you did not mention what type of battery was involved.
However, you might find good results by swabbing the anoxic contacts with vinegar, and the cathodic ones with a baking soda & water solution. Or I have them reversed in my overtired mind, in which case you’ll figure out the difference pretty quickly.
It would take a dissertation on the solid state physics (about which I know practically nothing) of iron oxide to answer this question. As another poster said, metal oxides range all the way from fair conductors to insulators to semiconductors.
A MOS FET, for example, is a Metal Oxide Semiconductor Field-Effect Transistor. If you need good electrical contact between aluminum sheets, for example to shield against radio frequency interference, it is necessary to treat the surface to remove the oxide and prevent it from returning.
One thing about rust is that it crumbles and flakes off so under a lot of pressure a rusty contact might conduct because the rust has been forced out by high pressure and some metal to metal contact is achieved. Don’t leave dry cells in unused electrical equipment for long periods.
For inexpensive and easily replaced equipment, the bother of taking the cells out and putting them back in might make risking ruining the item a good bet. To re-emphasize what has been said here (kinda): rust is iron oxide, a ceramic material.
Formed in the proper manner, and mixed with other chemicals, and you can cast some cool stuff out of iron oxide. Pure rust is all oxidized, and like most ceramics is a poor conductor of heat and electricity due to its electron configuration and bonds.