Quick question about Aluminum Nitride's conductivity

[FirewallDaProto]

TL;DR Summary

What's Aluminum Nitrides thermal and electrical conductivity? will it insulate against 120V AC?

Whats its thermal conductivity compared to copper? (as in x times worse than copper)
also, How electrically insulate is it? I'm looking to see if i can use it to encase an entire motherboard in a giant heat sink for a future project where i want to try and cool the entire motherboard to subzero temps.
(sorry if this is worded weirdly, I am not very into physics but i thought this would be a place to find an answer, at the very least, just answer yes or no if it can insulate 120VAC)

 

[anorlunda]

Please do a search before posting here. If you still have questions after the search, then you're welcome to post.

https://duckduckgo.com/?q=Aluminum+Nitride+conductivity&ia=web

 

[FirewallDaProto]

Please do a search before posting here. If you still have questions after the search, then you're welcome to post.

https://duckduckgo.com/?q=Aluminum+Nitride+conductivity&ia=web

I did some basic searching, but I am not good with the complicated format, i was mainly just asking for someone to simplify, thermal conductivity to a multiple of coppers, and a yes or no if it would insulate 120VAC.

 

[jrmichler]

PF rules require you to make an honest effort. We are here to help you after you have done that. Please note that we are all volunteers, not paid PF researchers.

 

[FirewallDaProto]

PF rules require you to make an honest effort. We are here to help you after you have done that. Please note that we are all volunteers, not paid PF researchers.

ah, i understand. I did more research and i found the thermal characteristics are what i need, but i can't figure out how to find out if it'll insulate 120v AC. I've found it's dielectric strength, but have no idea how to get that into a number i can use. I managed to find that its dialectric strength was "1.2–1.8×105 V/mm" but like i said, to me that means gibberish and i tried to find out how to simplify it, but to no avail.
EDIT: i found this, and I am trying to make sense of the numbers http://www.ioffe.ru/SVA/NSM/Semicond/AlN/ebasic.html

 

[jrmichler]

Search terms electrical conductivity aluminum nitride found several good hits, one of which states: The high thermal conductivity and excellent electrical insulation makes Aluminium Nitride suitable for a range of extreme environments and particularly suited to demanding electrical applications.

The $1.2-1.8 X 10^5$ V/mm is the breakdown voltage. It means that a sheet of aluminum nitride a few microns thick will insulate against 120 VAC.

 

[Vanadium 50]

nd a yes or no if it would insulate 120VAC.

One atom thick? Probably not. One mile? Probably.

It's a good insulator, but if you can't determine if it will work in your application from the resistivity it will be hard for us to help you.

 

[FirewallDaProto]

Search terms electrical conductivity aluminum nitride found several good hits, one of which states: The high thermal conductivity and excellent electrical insulation makes Aluminium Nitride suitable for a range of extreme environments and particularly suited to demanding electrical applications.

The $1.2-1.8 X 10^5$ V/mm is the breakdown voltage. It means that a sheet of aluminum nitride a few microns thick will insulate against 120 VAC.

thank you, this is exactly what i needed