Thermal insulation for high temperature microwave sintering operations and method thereof
- Knoxville, TN
- Oak Ridge, TN
- Kingston, TN
Superior microwave transparent thermal insulations for high temperature microwave sintering operations were prepared. One embodiment of the thermal insulation comprises granules of boron nitride coated with a very thin layer of glassy carbon made by preparing a glassy carbon precursor and blending it with boron nitride powder to form a mixture. The blended mixture is granulated to form a grit which is dried and heated to form the granules of boron nitride coated with a glassy carbon. Alternatively, grains of glassy carbon are coated with boron nitride by blending a mixture of a slurry comprising boron nitride, boric acid binder, and methyl alcohol with glassy carbon grains to form a blended mixture. The blended mixture is dried to form grains of glassy carbon coated with boron nitride. In addition, a physical mixture of boron nitride powder and glassy carbon grains has also been shown to be an excellent thermal insulation material for microwave processing and sintering.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- DOE Contract Number:
- AC05-84OR21400
- Assignee:
- Martin Marietta Energy Systems, Inc. (Oak Ridge, TN)
- Patent Number(s):
- US 5449887
- OSTI ID:
- 870064
- Country of Publication:
- United States
- Language:
- English
Single-Crystal Diffraction Patterns from Vitreous Carbon
|
journal | October 1974 |
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Method of preparing thermal insulation for high temperature microwave sintering operations
Method of preparing thermal insulation for high temperature microwave sintering operations
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insulation
temperature
microwave
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nitride
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glassy
carbon
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precursor
blending
powder
form
mixture
blended
granulated
grit
dried
heated
alternatively
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boric
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processing
carbon coated
nitride coated
blended mixture
comprising boron
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microwave sintering
thermal insulation
boric acid
boron nitride
glassy carbon
carbon precursor
microwave transparent
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acid binder
sintering operations
microwave processing
excellent thermal
transparent thermal
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superior microwave
microwave process
/219/264/