Method of making composite material crucible for use in a device for making single crystals
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United States of America Patent
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Jul 21, 1992
Issued Date -
N/A
app pub date -
Feb 2, 1990
filing date -
Apr 27, 1987
priority date (Note) -
Expired
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Abstract
A composite material crucible for a device for making single crystals having a single layer integrally-formed cylindrical wall made of composite materials in order to simultaneously provide mechanical strength and matching of its thermal conductivity to the thermal conductivity of a molten sample. The wall has an inner lining intimately and integrally bonded thereto for providing the functions of sealing and physical and chemical compatibility with the sample, without contamination thereof. A method for manufacturing the cylindrical crucible comprising selecting a composite material wall composition including fibers made of carbon or silicon carbide, and a matrix made of carbon or silicon carbide, making from the composite material a single layer integrally-formed cylindrical wall, and depositing on the cylindrical wall an optimized material to form an inner coating which is intimately and integrally bonded to the cylindrical wall.
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