All Questions
Tagged with conductivity metal
13 questions
3
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0
answers
181
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Is there such thing as metallic helium?
I know that hydrogen can behave as a conductor under high pressure (metallic hydrogen); however could helium behave similarly under high pressure? If so, could this have any potential benefits over ...
user145192
0
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0
answers
41
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How to coat stainless steel?
I am trying to coat stainless steel with carbon black. I am using Polyvinylidene fluoride PVDF 2% as a binder. I dip and I heat at 100C.
The coating that comes out is very fragile where you can blow ...
- 23
1
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0
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28
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will adding metal nano particles to a CNT-polymer matrix increase the conductivity of the polymer?
I was wondering would just physical mixing of metal nano powders with MWCNT in a polymer matrix improve the conductivity of the said polymer? Would the metal particles interact with the CNT network. I ...
- 105
0
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1
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752
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Why is copper a better conductor of electricity than calcium?
How would we compare the electrical conductivity between copper and calcium? I understand that electrical conductivity of a metal is dependent on the number of delocalized electrons for that metal. ...
- 242
3
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470
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Factors that influence the electrical conductivity of metals
The electrical conductivity of metals is a physical property of these materials. Much of the theory used to explain the electrical conductivity of metals is also based on physics understanding. ...
- 10.8k
2
votes
1
answer
628
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Why do metallic elements have a very small band gap while nonmetallic elements have a large band gap?
I recently was going over solid state bonding and conductivity. I was wondering why metallic elements (such as sodium, iron, etc.) have a small band gap / no band gap (as conductors that have the ...
- 1,469
1
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41
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ZnO layer as a passivity layer
I have bought a zinc sheet and with SEM I can see a ZnO layer, which is a passivity layer. But when I connect this sheet to a conductive wire, le zn sheet is conductive too. Is that normal ? the ZnO ...
- 111
14
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2
answers
20k
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Why is copper a better conductor than iron?
Metals are good conductors as the electrons in their outer shell are loose and can plunge out of the atom with the application of the slightest force (voltage).
Silver is the best metallic conductor, ...
- 733
5
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1
answer
1k
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Formation of Bands in Semi-Conductors
At school, we are learning about semi-conductors and their applications in modern electronics. One of the features of semi-conductors is that there is a small energy gap between the valence and ...
- 7,462
3
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1
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2k
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Why are metals conductive in terms of orbitals?
Back in high school I was taught a definition of metals:
Metals are a lattice of positive nuclei embedded within a sea of delocalised electrons
Metals are conductive because the electrons aren't ...
- 1,128
0
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229
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How does a metal atom's size affect the electrical conductivity of it's giant metallic structure?
In giant metallic structures, how does a metal atom's size affect the structure's electrical conductivity? (i.e. what happens if you go down a group of metal elements?)
- 696
3
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1
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Improving copper contact and preventing oxidation
I have a model railway in which I use pure copper on the tracks and in the engine to power the train with electricity.
Is there any solution to prevent the copper surfaces from corrosion, and maybe ...
- 31
22
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4
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Why is it that the least reactive metals are the best electrical conductors?
Silver, Gold and Platinum are amongst the best conductors of electricity, but also the amongst the most unreactive. Since electrical conductivity depends on the number of delocalized electrons (along ...
- 419