Bulk superhard B-C-N nanocomposite compact and method for preparing thereof
Abstract
Bulk, superhard, B-C-N nanocomposite compact and method for preparing thereof. The bulk, superhard, nanocomposite compact is a well-sintered compact and includes nanocrystalline grains of at least one high-pressure phase of B-C-N surrounded by amorphous diamond-like carbon grain boundaries. The bulk compact has a Vicker's hardness of about 41-68 GPa. It is prepared by ball milling a mixture of graphite and hexagonal boron nitride, encapsulating the ball-milled mixture, and sintering the encapsulated ball-milled mixture at a pressure of about 5-25 GPa and at a temperature of about 1000-2500 K.
- Inventors:
- Issue Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1174931
- Patent Number(s):
- 6759128
- Application Number:
- 10/190,156
- Assignee:
- University Of California, The Regents Of
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES
C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA
- DOE Contract Number:
- W-7405-ENG-36
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Zhao, Yusheng, and He, Duanwei. Bulk superhard B-C-N nanocomposite compact and method for preparing thereof. United States: N. p., 2004.
Web.
Zhao, Yusheng, & He, Duanwei. Bulk superhard B-C-N nanocomposite compact and method for preparing thereof. United States.
Zhao, Yusheng, and He, Duanwei. Tue .
"Bulk superhard B-C-N nanocomposite compact and method for preparing thereof". United States. https://www.osti.gov/servlets/purl/1174931.
@article{osti_1174931,
title = {Bulk superhard B-C-N nanocomposite compact and method for preparing thereof},
author = {Zhao, Yusheng and He, Duanwei},
abstractNote = {Bulk, superhard, B-C-N nanocomposite compact and method for preparing thereof. The bulk, superhard, nanocomposite compact is a well-sintered compact and includes nanocrystalline grains of at least one high-pressure phase of B-C-N surrounded by amorphous diamond-like carbon grain boundaries. The bulk compact has a Vicker's hardness of about 41-68 GPa. It is prepared by ball milling a mixture of graphite and hexagonal boron nitride, encapsulating the ball-milled mixture, and sintering the encapsulated ball-milled mixture at a pressure of about 5-25 GPa and at a temperature of about 1000-2500 K.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jul 06 00:00:00 EDT 2004},
month = {Tue Jul 06 00:00:00 EDT 2004}
}
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