Superhard composite materials including compounds of carbon and nitrogen deposited on metal and metal nitride carbide and carbonitride
A composite material having high hardness comprises a carbon nitrogen compound, such as CN{sub x} where x is greater than 0.1 and up to 1.33, deposited on a metal or metal compound selected to promote deposition of substantially crystalline CN{sub x}. The carbon nitrogen compound is deposited on a crystal plane of the metal or metal compound sufficiently lattice-matched with a crystal plane of the carbon nitrogen compound that the carbon nitrogen compound is substantially crystalline. A plurality of layers of the compounds can be formed in alternating sequence to provide a multi-layered, superlattice coating having a coating hardness in the range of 45--55 GPa, which corresponds to the hardness of a BN coating and approaches that of a diamond coating. 10 figs.
- Research Organization:
- Northwestern University
- Sponsoring Organization:
- USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
- DOE Contract Number:
- FG02-90ER45434
- Assignee:
- Northwestern Univ., Evanston, IL (United States)
- Patent Number(s):
- US 5,725,913/A/
- Application Number:
- PAN: 8-735,685; CNN: Grant MSS-9203239
- OSTI ID:
- 597156
- Country of Publication:
- United States
- Language:
- English
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Superhard composite materials including compounds of carbon and nitrogen deposited on metal and metal nitride carbide and carbonitride
Superhard composite materials including compounds of carbon and nitrogen deposited on metal and metal nitride, carbide and carbonitride