What should be molten Lead Fluoride or Crayolite Contained In? (Best Crucible)

  • Thread starter Thread starter Panthera Leo
  • Start date Start date
  • Tags Tags
    Lead
Join the discussion
Registration is free. Start your own thread to ask a follow-up.
Sign up Log in
3 replies · 4K views
Panthera Leo
Messages
108
Reaction score
0
Hello,

I am willing to do some experiments with molten Lead Fluoride and Crayolite in an electric muffle furnace, but I am not sure what type of crucible to use? Platinum Crucibles are way too expensive and I am assuming Alumina Crucible is not suitable... so, are there any other alternatives?

Thank You.
 
Engineering news on Phys.org

Discussion

Have you tried graphite?

Alumina would work in theory, as it has a higher melting point than either cryolite or PbF2, but then again it depends on your maximum process temperature and what you're trying to accomplish.
 
Graphite seems like a good alternative... Thanks.

I am trying to synthesize Corundum Crystals. :)

This is a similar experiment:
http://www.sciencedirect.com/science/article/pii/0022024874904011

My maximum operating temperature will be below 1200 celsius.

How about a Zirconia Crucible ?

Is cryolite able to dissolve Zirconia / Graphite like it does with Alumina? I couldn't find any phase diagrams online...

Thanks again. I highly appreciate your contributions.
 
This is why I like replying to threads - I always learn something!

I've never actually worked with cryolite, and hadn't looked into its usefulness. Not sure of it's compatibility with those materials and would have to research it myself.