The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 7938997 B1

PDF
Full Text
Expired
Date of Patent:
May. 10, 2011

Filed:

Sep. 27, 2006
Applicants:

Yusheng Zhao, Los Alamos, NM (US);

Duanwei He, Sichuan, CN;

Inventors:

Yusheng Zhao, Los Alamos, NM (US);

Duanwei He, Sichuan, CN;

Assignee:

Los Alamos National Security, LLC, Los Alamos, MN (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B 35/08 (2006.01);
U.S. Cl.
CPC ...
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.


Find Patent Forward Citations

Zhao, Yusheng. (2011). Preparation of bulk superhard b-c-n nanocomposite compact (U.S. Patent No. 7938997). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7938997

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