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Everything posted by CharlieH

  1. Hi everyone, I am currently working with glasses (technically glass composites) as a nuclear material and I have some powder which i want to take to 1300 degrees, past the melting point. Ive tried this several times but they all stuck to the crucible i was using. With a bit of looking around the net i came across the use of a kiln wash, which is what i think i shouldve done to prevent this, a little bit more research left me with a 50:50 recipe of kaolin to alumina hryrdrate, however I dont know enough about this to know whether it would partially bond (physically or otherwise) to the glass. For good results it cant bond at all. I was hoping someone here knows if there is a way i can prevent my samples from sticking to the crucible, or specfic recipes that i could use if a kiln wash is the way to go. Any thoughts would be greatly appreciated. Many thanks!
  2. CharlieH

    Kiln wash

    @Diane Puckett That sound like a good idea, im finding that a big problem with academic work is the lack of of hands-on-work and the experience that goes with it. Next best thing from getting that experience is talking to someone already with it. @justanassembler I managed to get my hands on a graphite crucible and im going to try it without the seperator. I saw the stuff you were talking about online and hopefully there is a college registered site i can buy it off. Biggest problem im having is the places im actually allowed to buy this stuff from.
  3. CharlieH

    Kiln wash

    Its a thermal gravimetric analysis type crucible so it's about 20ml in capacity and although I dont know for sure, I think it's an alumina crucible. I think I can get my hand on a graphite crucible, but my head would be wanted on a plate by the guy who owns them, if it stuck. Is there any chance this could happen? Apologies for asking this in the wrong place, first post.

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