Method of preparing thermal insulation for high temperature microwave sintering operations
Abstract
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. 1 fig.
- Inventors:
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- OSTI Identifier:
- 264577
- Patent Number(s):
- 5536292
- Application Number:
- PAN: 8-518,067
- Assignee:
- Martin Marietta Energy Systems, Inc., Oak Ridge, TN (United States)
- DOE Contract Number:
- AC05-84OR21400
- Resource Type:
- Patent
- Resource Relation:
- Other Information: PBD: 16 Jul 1996
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 36 MATERIALS SCIENCE; MATERIALS; SINTERING; FURNACES; THERMAL INSULATION; FABRICATION; MICROWAVE HEATING; SINTERED MATERIALS
Citation Formats
Holcombe, C E, Dykes, N L, and Morrow, M S. Method of preparing thermal insulation for high temperature microwave sintering operations. United States: N. p., 1996.
Web.
Holcombe, C E, Dykes, N L, & Morrow, M S. Method of preparing thermal insulation for high temperature microwave sintering operations. United States.
Holcombe, C E, Dykes, N L, and Morrow, M S. Tue .
"Method of preparing thermal insulation for high temperature microwave sintering operations". United States.
@article{osti_264577,
title = {Method of preparing thermal insulation for high temperature microwave sintering operations},
author = {Holcombe, C E and Dykes, N L and Morrow, M S},
abstractNote = {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. 1 fig.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jul 16 00:00:00 EDT 1996},
month = {Tue Jul 16 00:00:00 EDT 1996}
}