Talk:Electrical Conductors
| Element | Resistivity @ 20°C | Density (~ r.t.) | Availability | Highland | Lowland |
| Silver | 15.87 nΩ·m | 10.490 g·cm−3 | Unknown | Unknown | Unknown |
| Copper | 16.78 nΩ·m | 8.960 g·cm−3 | Unknown | Unknown | Unknown |
| Gold | 22.14 nΩ·m | 19.300 g·cm−3 | Unknown | Unknown | Unknown |
| Aluminum | 26.50 nΩ·m | 2.700 g·cm−3 | Yes | 133,000 | 69,700 |
| Magnesium | 43.90 nΩ·m | 1.738 g·cm−3 | Yes | 45,500 | 57,600 |
| Sodium | 47.70 nΩ·m | 0.968 g·cm−3 | Yes | 3,100 | 2,900 |
| Iron | 96.10 nΩ·m | 7.150 g·cm−3 | Yes | 48,700 | 132,000 |
| Chromium | 125.00 nΩ·m | 7.860 g·cm−3 | Yes | 850 | 2,600 |
| Titanium | 420.00 nΩ·m | 4.506 g·cm−3 | Yes | 3,100 | 31,000 |
| Manganese | 1440.00 nΩ·m | 7.210 g·cm−3 | Yes | 675 | 1,700 |
| Lower # => better | r.t. = room temperature | ppm by weight | ppm by weight |
Thinking Moon
The Sodium entry is a good example of thinking Moon. That is, looking at ideas that are insignificant when used on Earth but could really save the day when used on the Moon. It does take a rather long scenario to show how Sodium could be used, but this is part of the process needed to compare complicated technical ideas.
--Jriley 13:25, 11 May 2007 (UTC)
- Indeed ISRU is important.
- I can't see sodium being much use as a conductor inside a habitat due to it's potential for interaction with condensation. Neither can I see much use for NaK in a hab, though that might have uses outdoors.
- I've forked Sodium Scenario to it's own article, partly because it deserves an article and partly because this page is intended primarily as a fact resource for other articles.
- -- Mdelaney 19:26, 11 May 2007 (UTC)
The only problem I see is that sodium/potassium may not be suitable for buried wires, as described in the Sodium Scenario, as they can be easily scooped with a spoon or cut with a knife. Even if the wire is re-enforced with fibers and an iron core, malleability of the conductive layer could prove to be an issue in high use areas. Excavations and geologic settling would need to be very closely monitored. Long term studies of this kind of buried wire combo may have very interesting results. Would Na and K slowly mix and produce NaK? Would there be enough heat or tension to meld them together? How would the wire deform under varying subterranean pressures? I also cannot help my curiosity about the rate of loss experienced by bare cable buried in lunar regolith, as it will be interesting to see what effects the nano-phase surface iron may have on an uninsulated circuit. How could all of the above effects be mitigated? Oh, what I would give for a bag of mare simulant and a couple of vacuum chambers in a real lab right about now.
Jarogers2001 17:22, 12 May 2007 (UTC)
Sodium Abundance
Having looked around I'm only seeing Sodium in the 3k ppm range or listed in compounds that have % occurrences of ~0.5%. Could you cite your sources supporting said abundance of Sodium?
-- Mdelaney 19:27, 11 May 2007 (UTC)
