High Heat Capacity

safawafa

Hey everyone,

I am designing a system for very high temp (~500 - ~1000 *C) applications, does anyone know some high heat capacity/insulating materials that are relatively common?

I am looking to use them as a sort of heat sink/shield for an electronic circuit.

Yes I know I am asking alot but the time frame that it will be exposed to >500*C is less than 5 min at a time.

Thanks!

mawk

Common?..insulating?...high shc...?

ding ding ding.. Water.

FarmerGreen

Refractory ceramic ie firebrick ?

safawafa

Hmm, firebrick may work? needs to be easy to work with though (machined into a desired shape inexpensively)

BUT, I forgot to mention one crucial characteristic. It must be essentially transparent for wavelengths between ~2-5 microns. So the electromagnetic absorption in this range must be quite low. water does not meet this quality and since its liquid, its use in a more intricate design may be tricky. However I may have to settle for using a very shallow interface of water infront of the desired electromagnetic "window" if nothing else is feasible.

I was thinking of a multi-material design, a high shp heat sink that is surrounded on both sides (outside exposed to the heat and inside adjacent to the circuitry) by insulating material.. with a small window of electromagnetically transparent material (glass of some sort?)

enda1

Hmm.

Any chance you'll be "diggin' for oil"?
Oil exploration company I suppose designing a smart module following a drill tip to sense hydrocarbons.

In response to your request however, no idea.
If this is not your field, try get some info on how they design their sensory equipment. Patent applications and the like could help.