Preparation of bulk superhard B-C-N nanocomposite compact
Abstract
Bulk, superhard, B--C--N nanocomposite compacts were prepared by ball milling a mixture of graphite and hexagonal boron nitride, encapsulating the ball-milled mixture at a pressure in a range of from about 15 GPa to about 25 GPa, and sintering the pressurized encapsulated ball-milled mixture at a temperature in a range of from about 1800-2500 K. The product bulk, superhard, nanocomposite compacts were well sintered compacts with nanocrystalline grains of at least one high-pressure phase of B--C--N surrounded by amorphous diamond-like carbon grain boundaries. The bulk compacts had a measured Vicker's hardness in a range of from about 41 GPa to about 68 GPa.
- Inventors:
-
- Los Alamos, NM
- Sichuan, CN
- Issue Date:
- Research Org.:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1018338
- Patent Number(s):
- 7,938,997
- Application Number:
- 11/529,657
- Assignee:
- Los Alamos National Security, LLC (Los Alamos, MN) ALO
- 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. Preparation of bulk superhard B-C-N nanocomposite compact. United States: N. p., 2011.
Web.
Zhao, Yusheng, & He, Duanwei. Preparation of bulk superhard B-C-N nanocomposite compact. United States.
Zhao, Yusheng, and He, Duanwei. Tue .
"Preparation of bulk superhard B-C-N nanocomposite compact". United States. https://www.osti.gov/servlets/purl/1018338.
@article{osti_1018338,
title = {Preparation of bulk superhard B-C-N nanocomposite compact},
author = {Zhao, Yusheng and He, Duanwei},
abstractNote = {Bulk, superhard, B--C--N nanocomposite compacts were prepared by ball milling a mixture of graphite and hexagonal boron nitride, encapsulating the ball-milled mixture at a pressure in a range of from about 15 GPa to about 25 GPa, and sintering the pressurized encapsulated ball-milled mixture at a temperature in a range of from about 1800-2500 K. The product bulk, superhard, nanocomposite compacts were well sintered compacts with nanocrystalline grains of at least one high-pressure phase of B--C--N surrounded by amorphous diamond-like carbon grain boundaries. The bulk compacts had a measured Vicker's hardness in a range of from about 41 GPa to about 68 GPa.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {5}
}
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.