Process for producing wurtzitic or cubic boron nitride
Abstract
Disclosed is a process for producing wurtzitic or cubic boron nitride comprising the steps of: [A] preparing an intimate mixture of powdered boron oxide, a powdered metal selected from the group consisting of magnesium or aluminum, and a powdered metal azide; [B] igniting the mixture and bringing it to a temperature at which self-sustaining combustion occurs; [C] shocking the mixture at the end of the combustion thereof with a high pressure wave, thereby forming as a reaction product, wurtzitic or cubic boron nitride and occluded metal oxide; and, optionally [D] removing the occluded metal oxide from the reaction product. Also disclosed are reaction products made by the process described.
- Inventors:
-
- San Jose, CA
- (late of Danville, CA)
- Livermore, CA
- Issue Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- OSTI Identifier:
- 868264
- Patent Number(s):
- 5108966
- Assignee:
- Regents of University of California (Oakland, CA)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- process; producing; wurtzitic; cubic; boron; nitride; disclosed; comprising; steps; preparing; intimate; mixture; powdered; oxide; metal; selected; consisting; magnesium; aluminum; azide; igniting; bringing; temperature; self-sustaining; combustion; occurs; shocking; pressure; wave; forming; reaction; product; occluded; optionally; removing; products; described; metal azide; cubic boron; boron oxide; boron nitride; metal oxide; reaction product; reaction products; metal selected; powdered metal; pressure wave; combustion occurs; self-sustaining combustion; intimate mixture; process described; producing wurtzitic; /501/51/423/
Citation Formats
Holt, J Birch, Kingman, deceased, Donald D., and Bianchini, Gregory M. Process for producing wurtzitic or cubic boron nitride. United States: N. p., 1992.
Web.
Holt, J Birch, Kingman, deceased, Donald D., & Bianchini, Gregory M. Process for producing wurtzitic or cubic boron nitride. United States.
Holt, J Birch, Kingman, deceased, Donald D., and Bianchini, Gregory M. Wed .
"Process for producing wurtzitic or cubic boron nitride". United States. https://www.osti.gov/servlets/purl/868264.
@article{osti_868264,
title = {Process for producing wurtzitic or cubic boron nitride},
author = {Holt, J Birch and Kingman, deceased, Donald D. and Bianchini, Gregory M},
abstractNote = {Disclosed is a process for producing wurtzitic or cubic boron nitride comprising the steps of: [A] preparing an intimate mixture of powdered boron oxide, a powdered metal selected from the group consisting of magnesium or aluminum, and a powdered metal azide; [B] igniting the mixture and bringing it to a temperature at which self-sustaining combustion occurs; [C] shocking the mixture at the end of the combustion thereof with a high pressure wave, thereby forming as a reaction product, wurtzitic or cubic boron nitride and occluded metal oxide; and, optionally [D] removing the occluded metal oxide from the reaction product. Also disclosed are reaction products made by the process described.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1992},
month = {1}
}
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