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Ceramic heatsinks

post #1 of 16
Thread Starter 
so has anyone tried this, it seems good to me, if nasa can use it in the reentry shield on a space shuttle that means it can dissipate heat well, and i have access to a kiln to fire it and get it looking good, so opinions
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post #2 of 16
Its not that the ceramics are good at dissipating heat, they are actually just really good insulators (meaning they dont let the heat penetrate them). That keeps the people inside the shuttle safe.
    
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post #3 of 16
Interesting idea. Ceramic is an insulator though so would not transfer the heat very well if at all.
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post #4 of 16
Ceramic heatsinks DO NOT transfer heat that is why they're on the bottom of the space shuttle.
post #5 of 16
I would tend to think that NASA uses ceramic for its insulating properties rather than high thermal conductivity, but then again, I'm not a rocket scientist. I do know that several types of ceramics would be very unsuitable for heatsinks, but there may be some particular types that could work.
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post #6 of 16
on the other hand they use ceramic in capacitors. maybe it's not the sam but who knows
    
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post #7 of 16
Quote:
Originally Posted by mashersmasher View Post
on the other hand they use ceramic in capacitors. maybe it's not the sam but who knows
For the purposes of insulation
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post #8 of 16
NOOO. Stay away from Ceramic..It just keeps heat in and will cause more issues than its worth. Ive been there and there really poor..I cnt remember the name of it but its main material property was Ceramic mixed with something else.
post #9 of 16
Here is some info:
http://matse1.mse.uiuc.edu/ceramics/prin.html

Thermal Conductivity (W/m K)
Copper = 398
Aluminium = 247
Fused silica = 2.0 (Amorphous fused silica is used in the space shuttle)
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post #10 of 16
you'd be making it into an oven...*****
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