Bulk superhard B-C-N nanocomposite compact and method for preparing thereof
Patent
·
OSTI ID:1174931
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.
- Research Organization:
- The Regents of the University of California, Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-7405-ENG-36
- Assignee:
- University Of California, The Regents Of
- Patent Number(s):
- 6,759,128
- Application Number:
- 10/190,156
- OSTI ID:
- 1174931
- Country of Publication:
- United States
- Language:
- English
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