Method for producing a ceramic crucible
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United States of America Patent
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Issued Date -
Jun 29, 2006
app pub date -
Dec 16, 2005
filing date -
Dec 17, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention relates to a method for producing a ceramic crucible. The following steps are proposed: providing a solidifiable slip, providing a casting mould (10) for the ceramic crucible, pouring the slip into the casting mould, solidifying the slip in the casting mould by (a) freezing and/or (b) changing its pH value, such that a preform is obtained, and heat-treating the preform, such that a ceramic crucible is obtained. The invention additionally relates to a ceramic crucible producible using such a method and a kit for producing such a ceramic crucible, having: (a) a casting mould, preferably a metal mould, for a ceramic crucible, (b) a sol, preferably an aqueous SiO.sub.2 sol, comprising a ceramic nanoparticle fraction, (c) ceramic particles comprising a microceramic fraction, (d) optionally a metal powder consisting essentially of metals and/or alloys and/or intermetallic compounds, (e) optionally one or more further additives and optionally organic or inorganic binders. Finally, the invention relates to an apparatus for performing the stated method.
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