Hello. I would like to ask:
What kind of release agent can be used to remove calcium and sodium glass from its crucible that functions as a mold?
I prepare small samples of glass for analysis by X-rays. The glass is melted at 1500 ° C, however, I can not demold it
You may want to check this related earlier discussion for its possible interest concerning to your query: https://www.researchgate.net/post/How_do_we_separate_fused_glass_from_platinum_crucibles_that_also_act_as_molds
You usually pour the melt into a mold made of graphite or boron nitride to make a small disk for analysis. What kind of crucible are you using. If an oxide (fire clay, porcelain, alumna, etc) you can't get it to release because it has chemically bonded to the crucible. If a Pt alloy, try a Pt/5Au crucible, which will reduce the wetting for the first few uses until enough scratches and wrinkles form in the crucible to mechanically bond the glass in place.
There is no "release agent" for your application.
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