Finding the Right Material to Withstand 2000+ deg. F

[REDesigner09]

Hi,

I'm seeking some type of (semi-inexpensive)material that can withstand 2000°F

I'm trying to design some type of sleeve in which it will temporarily go over the root of an airfoil.

This sleeve has to seal in some way, as well & be easy to slide on & off.

Any suggestions on material or design would be great.

Thanks

 

[btrueblood]

Graphite? Sintered Boron Nitride?

 

[stanweld]

FeCrAlloy or NiCrAlloy alloys would work. While having low strength at that temperature, they have great oxidation resistance.

 

[REDesigner09]

Hi Everyone,

Thanks for the suggestions. Are any of these a sponge-like material?

I just saw the full application & I'm thinking I can design a block sleeve & in it, will be a sponge-like material that will take the contour of the parts being inserted.

Any material suggestions for this?

Thanks

 

[Compositepro]

Ablative materials are often used for thermal protection of aerospace structures. These can be phenolic or bismaleimide composites, or simply a thick paint-like coating such as Chartek.
A search term would be thermal protection system (TPS)

 

[Guest102023]

... and it won't be semi-expensive.

 

[davefitz]

It is my understanding that one material proposed to be used to 2800F + ( as china's ablative shield on their space shuttle) is a geopolymer with fiber reinforcement- other geopoymers easily withstand simialr temperatures, but ductility is wanting- so fibers are needed to arest cracks. Low low cost compared to other options, if it works.

 

[unclesyd]

Depending on your application there are numerous composites that can handle your temperature. The SiC foam is often used in high temperature applications either alone, but mostly in composites.

Here is one product of several products offered by Ultramet that can handle your temperature. I would definately give them a call to discuss your requirements.

As post above none of these materials are going to be anywhere near cheap.

http://www.ultramet.com/thermalprotectionsystem.html

http://www.ergaerospace.com/SiC-properties.htm

 

[ornerynorsk]

Can you use a heat sink compound like what is sold by welder's supply? Just a thought.

It is better to have enough ideas for some of them to be wrong, than to be always right by having no ideas at all.

 

[REDesigner09]

Hi Everyone,

Thanks for the great feedback & suggestions. I need to put a design together first, then focus on materials.


At the moment, I need to deal with functionality & efficiency to determine if new design concepts is better than our current processes.

I'll keep everyone updated.

Keep the suggestions coming though....

 

[Compositepro]

Quartz or carbon fabric or felt could be considered a conformable sponge-like material to be used inside a shell.