×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Finding the Right Material to Withstand 2000+ deg. F

Finding the Right Material to Withstand 2000+ deg. F

Finding the Right Material to Withstand 2000+ deg. F

(OP)
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

RE: Finding the Right Material to Withstand 2000+ deg. F

Graphite?  Sintered Boron Nitride?

RE: Finding the Right Material to Withstand 2000+ deg. F

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

RE: Finding the Right Material to Withstand 2000+ deg. F

(OP)
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
 

RE: Finding the Right Material to Withstand 2000+ deg. F

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)

RE: Finding the Right Material to Withstand 2000+ deg. F

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

RE: Finding the Right Material to Withstand 2000+ deg. F

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.

RE: Finding the Right Material to Withstand 2000+ deg. F

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
 

RE: Finding the Right Material to Withstand 2000+ deg. F

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.

RE: Finding the Right Material to Withstand 2000+ deg. F

(OP)
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....
 

RE: Finding the Right Material to Withstand 2000+ deg. F

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

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources