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:
- Issue Date:
- OSTI Identifier:
- 7274347
- Patent Number(s):
- 5108966
- Application Number:
- PPN: US 7-497688
- Assignee:
- Univ. of California, Oakland, CA (United States)
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 23 Mar 1990
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; BORON NITRIDES; FABRICATION; IGNITION; REMOVAL; SHOCK WAVES; BORON COMPOUNDS; NITRIDES; NITROGEN COMPOUNDS; PNICTIDES; 360201* - Ceramics, Cermets, & Refractories- Preparation & Fabrication
Citation Formats
Holt, J B, Kingman, D D, and Bianchini, G M. Process for producing wurtzitic or cubic boron nitride. United States: N. p., 1992.
Web.
Holt, J B, Kingman, D D, & Bianchini, G M. Process for producing wurtzitic or cubic boron nitride. United States.
Holt, J B, Kingman, D D, and Bianchini, G M. Tue .
"Process for producing wurtzitic or cubic boron nitride". United States.
@article{osti_7274347,
title = {Process for producing wurtzitic or cubic boron nitride},
author = {Holt, J B and Kingman, D D and Bianchini, G 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 = {4}
}
Search for the full text at the U.S. Patent and Trademark Office
Note: You will be redirected to the USPTO site, which may require a pop-up blocker to be deactivated to view the patent. If so, you will need to manually turn off your browser's pop-up blocker, typically found within the browser settings. (See DOE Patents FAQs for more information.)
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.