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Title: 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:
 [1];  [2];  [3]
  1. San Jose, CA
  2. (late of Danville, CA)
  3. Livermore, CA
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (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}
}

Patent:

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