high temperature (800C) thermally conductive compound
high temperature (800C) thermally conductive compound
(OP)
I am looking for a thermally conductive compound to bridge the voids between hot body at 800C and coolant pipes. Environment is air. Body is cast iron and pipes are stainless steel.. Voids wont be greater than 6mm cubed. Can be powder or slurry when applied to assembled parts. Needs to withstand thermal cycling.
Found following on the web which looks interesting however I am not knowledgable in this field and I would be gratful for some insights.
http://www.thermon.com/catalog/us_pdf_files/TSP003...
Many thanks
Found following on the web which looks interesting however I am not knowledgable in this field and I would be gratful for some insights.
http://www.thermon.com/catalog/us_pdf_files/TSP003...
Many thanks
RE: high temperature (800C) thermally conductive compound
Depending on your geometry, aluminum powder might work, if you can tolerate it locally melting on the hot body.
RE: high temperature (800C) thermally conductive compound
TTFN

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RE: high temperature (800C) thermally conductive compound
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Plymouth Tube
RE: high temperature (800C) thermally conductive compound
Not exactly a full fledged recommendation, but worth looking into.
RE: high temperature (800C) thermally conductive compound
RE: high temperature (800C) thermally conductive compound
However, the binders in most copper anti-seize compounds most likely will burn off into a carbonized mess.
What's already been cited and this: http://www.electroscience.com/pdf/4492.pdf are probably the only viable candidates for filling such large voids and providing a decent thermal conductivity.
As a reminder, the ultimate thermal conductivity of a thermal compound is only part of the story, since the compound is not supposed to be lathered, but instead, is supposed to be just barely thicker than most typical voids, so about 25 um. Given that, even if the material was mustard, thermal conductivity is still pretty good: http://www.hardwaresecrets.com/article/Thermal-Com....
A 25 um thick layer of polystyrene comes in at 2.4 kW/m^2-K.
TTFN

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